---
_id: '1125'
abstract:
- lang: eng
text: "Natural environments are never constant but subject to spatial and temporal
change on\r\nall scales, increasingly so due to human activity. Hence, it is crucial
to understand the\r\nimpact of environmental variation on evolutionary processes.
In this thesis, I present\r\nthree topics that share the common theme of environmental
variation, yet illustrate its\r\neffect from different perspectives.\r\nFirst,
I show how a temporally fluctuating environment gives rise to second-order\r\nselection
on a modifier for stress-induced mutagenesis. Without fluctuations, when\r\npopulations
are adapted to their environment, mutation rates are minimized. I argue\r\nthat
a stress-induced mutator mechanism may only be maintained if the population is\r\nrepeatedly
subjected to diverse environmental challenges, and I outline implications of\r\nthe
presented results to antibiotic treatment strategies.\r\nSecond, I discuss my
work on the evolution of dispersal. Besides reproducing\r\nknown results about
the effect of heterogeneous habitats on dispersal, it identifies\r\nspatial changes
in dispersal type frequencies as a source for selection for increased\r\npropensities
to disperse. This concept contains effects of relatedness that are known\r\nto
promote dispersal, and I explain how it identifies other forces selecting for
dispersal\r\nand puts them on a common scale.\r\nThird, I analyse genetic variances
of phenotypic traits under multivariate stabilizing\r\nselection. For the case
of constant environments, I generalize known formulae of\r\nequilibrium variances
to multiple traits and discuss how the genetic variance of a focal\r\ntrait is
influenced by selection on background traits. I conclude by presenting ideas and\r\npreliminary
work aiming at including environmental fluctuations in the form of moving\r\ntrait
optima into the model."
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Sebastian
full_name: Novak, Sebastian
id: 461468AE-F248-11E8-B48F-1D18A9856A87
last_name: Novak
orcid: 0000-0002-2519-824X
citation:
ama: Novak S. Evolutionary proccesses in variable emvironments. 2016.
apa: Novak, S. (2016). Evolutionary proccesses in variable emvironments.
Institute of Science and Technology Austria.
chicago: Novak, Sebastian. “Evolutionary Proccesses in Variable Emvironments.” Institute
of Science and Technology Austria, 2016.
ieee: S. Novak, “Evolutionary proccesses in variable emvironments,” Institute of
Science and Technology Austria, 2016.
ista: Novak S. 2016. Evolutionary proccesses in variable emvironments. Institute
of Science and Technology Austria.
mla: Novak, Sebastian. Evolutionary Proccesses in Variable Emvironments.
Institute of Science and Technology Austria, 2016.
short: S. Novak, Evolutionary Proccesses in Variable Emvironments, Institute of
Science and Technology Austria, 2016.
date_created: 2018-12-11T11:50:17Z
date_published: 2016-07-01T00:00:00Z
date_updated: 2023-09-07T11:55:53Z
day: '01'
ddc:
- '576'
degree_awarded: PhD
department:
- _id: NiBa
file:
- access_level: closed
checksum: 81dcc838dfcf7aa0b1a27ecf4fe2da4e
content_type: application/pdf
creator: dernst
date_created: 2019-08-13T09:01:00Z
date_updated: 2019-08-13T09:01:00Z
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file_name: Novak_thesis.pdf
file_size: 3564901
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content_type: application/pdf
creator: dernst
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file_date_updated: 2021-02-22T13:42:47Z
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language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
page: '124'
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
publist_id: '6235'
related_material:
record:
- id: '2023'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Nicholas H
full_name: Barton, Nicholas H
id: 4880FE40-F248-11E8-B48F-1D18A9856A87
last_name: Barton
orcid: 0000-0002-8548-5240
title: Evolutionary proccesses in variable emvironments
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2016'
...
---
_id: '1358'
abstract:
- lang: eng
text: 'Gene regulation relies on the specificity of transcription factor (TF)–DNA
interactions. Limited specificity may lead to crosstalk: a regulatory state in
which a gene is either incorrectly activated due to noncognate TF–DNA interactions
or remains erroneously inactive. As each TF can have numerous interactions with
noncognate cis-regulatory elements, crosstalk is inherently a global problem,
yet has previously not been studied as such. We construct a theoretical framework
to analyse the effects of global crosstalk on gene regulation. We find that crosstalk
presents a significant challenge for organisms with low-specificity TFs, such
as metazoans. Crosstalk is not easily mitigated by known regulatory schemes acting
at equilibrium, including variants of cooperativity and combinatorial regulation.
Our results suggest that crosstalk imposes a previously unexplored global constraint
on the functioning and evolution of regulatory networks, which is qualitatively
distinct from the known constraints that act at the level of individual gene regulatory
elements.'
article_number: '12307'
author:
- first_name: Tamar
full_name: Friedlander, Tamar
id: 36A5845C-F248-11E8-B48F-1D18A9856A87
last_name: Friedlander
- first_name: Roshan
full_name: Prizak, Roshan
id: 4456104E-F248-11E8-B48F-1D18A9856A87
last_name: Prizak
- first_name: Calin C
full_name: Guet, Calin C
id: 47F8433E-F248-11E8-B48F-1D18A9856A87
last_name: Guet
orcid: 0000-0001-6220-2052
- first_name: Nicholas H
full_name: Barton, Nicholas H
id: 4880FE40-F248-11E8-B48F-1D18A9856A87
last_name: Barton
orcid: 0000-0002-8548-5240
- first_name: Gasper
full_name: Tkacik, Gasper
id: 3D494DCA-F248-11E8-B48F-1D18A9856A87
last_name: Tkacik
orcid: 0000-0002-6699-1455
citation:
ama: Friedlander T, Prizak R, Guet CC, Barton NH, Tkačik G. Intrinsic limits to
gene regulation by global crosstalk. Nature Communications. 2016;7. doi:10.1038/ncomms12307
apa: Friedlander, T., Prizak, R., Guet, C. C., Barton, N. H., & Tkačik, G. (2016).
Intrinsic limits to gene regulation by global crosstalk. Nature Communications.
Nature Publishing Group. https://doi.org/10.1038/ncomms12307
chicago: Friedlander, Tamar, Roshan Prizak, Calin C Guet, Nicholas H Barton, and
Gašper Tkačik. “Intrinsic Limits to Gene Regulation by Global Crosstalk.” Nature
Communications. Nature Publishing Group, 2016. https://doi.org/10.1038/ncomms12307.
ieee: T. Friedlander, R. Prizak, C. C. Guet, N. H. Barton, and G. Tkačik, “Intrinsic
limits to gene regulation by global crosstalk,” Nature Communications,
vol. 7. Nature Publishing Group, 2016.
ista: Friedlander T, Prizak R, Guet CC, Barton NH, Tkačik G. 2016. Intrinsic limits
to gene regulation by global crosstalk. Nature Communications. 7, 12307.
mla: Friedlander, Tamar, et al. “Intrinsic Limits to Gene Regulation by Global Crosstalk.”
Nature Communications, vol. 7, 12307, Nature Publishing Group, 2016, doi:10.1038/ncomms12307.
short: T. Friedlander, R. Prizak, C.C. Guet, N.H. Barton, G. Tkačik, Nature Communications
7 (2016).
date_created: 2018-12-11T11:51:34Z
date_published: 2016-08-04T00:00:00Z
date_updated: 2023-09-07T12:53:49Z
day: '04'
ddc:
- '576'
department:
- _id: GaTk
- _id: NiBa
- _id: CaGu
doi: 10.1038/ncomms12307
ec_funded: 1
file:
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checksum: fe3f3a1526d180b29fe691ab11435b78
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:12:01Z
date_updated: 2020-07-14T12:44:46Z
file_id: '4919'
file_name: IST-2016-627-v1+1_ncomms12307.pdf
file_size: 861805
relation: main_file
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checksum: 164864a1a675f3ad80e9917c27aba07f
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:12:02Z
date_updated: 2020-07-14T12:44:46Z
file_id: '4920'
file_name: IST-2016-627-v1+2_ncomms12307-s1.pdf
file_size: 1084703
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file_date_updated: 2020-07-14T12:44:46Z
has_accepted_license: '1'
intvolume: ' 7'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
- _id: 25B07788-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '250152'
name: Limits to selection in biology and in evolutionary computation
- _id: 254E9036-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P28844-B27
name: Biophysics of information processing in gene regulation
publication: Nature Communications
publication_status: published
publisher: Nature Publishing Group
publist_id: '5887'
pubrep_id: '627'
quality_controlled: '1'
related_material:
record:
- id: '6071'
relation: dissertation_contains
status: public
scopus_import: 1
status: public
title: Intrinsic limits to gene regulation by global crosstalk
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 7
year: '2016'
...
---
_id: '9710'
abstract:
- lang: eng
text: Much of quantitative genetics is based on the ‘infinitesimal model’, under
which selection has a negligible effect on the genetic variance. This is typically
justified by assuming a very large number of loci with additive effects. However,
it applies even when genes interact, provided that the number of loci is large
enough that selection on each of them is weak relative to random drift. In the
long term, directional selection will change allele frequencies, but even then,
the effects of epistasis on the ultimate change in trait mean due to selection
may be modest. Stabilising selection can maintain many traits close to their optima,
even when the underlying alleles are weakly selected. However, the number of traits
that can be optimised is apparently limited to ~4Ne by the ‘drift load’, and this
is hard to reconcile with the apparent complexity of many organisms. Just as for
the mutation load, this limit can be evaded by a particular form of negative epistasis.
A more robust limit is set by the variance in reproductive success. This suggests
that selection accumulates information most efficiently in the infinitesimal regime,
when selection on individual alleles is weak, and comparable with random drift.
A review of evidence on selection strength suggests that although most variance
in fitness may be because of alleles with large Nes, substantial amounts of adaptation
may be because of alleles in the infinitesimal regime, in which epistasis has
modest effects.
article_processing_charge: No
author:
- first_name: Nicholas H
full_name: Barton, Nicholas H
id: 4880FE40-F248-11E8-B48F-1D18A9856A87
last_name: Barton
orcid: 0000-0002-8548-5240
citation:
ama: 'Barton NH. Data from: How does epistasis influence the response to selection?
2016. doi:10.5061/dryad.s5s7r'
apa: 'Barton, N. H. (2016). Data from: How does epistasis influence the response
to selection? Dryad. https://doi.org/10.5061/dryad.s5s7r'
chicago: 'Barton, Nicholas H. “Data from: How Does Epistasis Influence the Response
to Selection?” Dryad, 2016. https://doi.org/10.5061/dryad.s5s7r.'
ieee: 'N. H. Barton, “Data from: How does epistasis influence the response to selection?”
Dryad, 2016.'
ista: 'Barton NH. 2016. Data from: How does epistasis influence the response to
selection?, Dryad, 10.5061/dryad.s5s7r.'
mla: 'Barton, Nicholas H. Data from: How Does Epistasis Influence the Response
to Selection? Dryad, 2016, doi:10.5061/dryad.s5s7r.'
short: N.H. Barton, (2016).
date_created: 2021-07-23T11:45:47Z
date_published: 2016-09-23T00:00:00Z
date_updated: 2023-09-20T11:17:47Z
day: '23'
department:
- _id: NiBa
doi: 10.5061/dryad.s5s7r
main_file_link:
- open_access: '1'
url: https://doi.org/10.5061/dryad.s5s7r
month: '09'
oa: 1
oa_version: Published Version
publisher: Dryad
related_material:
record:
- id: '1199'
relation: used_in_publication
status: public
status: public
title: 'Data from: How does epistasis influence the response to selection?'
type: research_data_reference
user_id: 6785fbc1-c503-11eb-8a32-93094b40e1cf
year: '2016'
...
---
_id: '9864'
abstract:
- lang: eng
text: Viral capsids are structurally constrained by interactions among the amino
acids (AAs) of their constituent proteins. Therefore, epistasis is expected to
evolve among physically interacting sites and to influence the rates of substitution.
To study the evolution of epistasis, we focused on the major structural protein
of the ϕX174 phage family by, first, reconstructing the ancestral protein sequences
of 18 species using a Bayesian statistical framework. The inferred ancestral reconstruction
differed at eight AAs, for a total of 256 possible ancestral haplotypes. For each
ancestral haplotype and the extant species, we estimated, in silico, the distribution
of free energies and epistasis of the capsid structure. We found that free energy
has not significantly increased but epistasis has. We decomposed epistasis up
to fifth order and found that higher-order epistasis sometimes compensates pairwise
interactions making the free energy seem additive. The dN/dS ratio is low, suggesting
strong purifying selection, and that structure is under stabilizing selection.
We synthesized phages carrying ancestral haplotypes of the coat protein gene and
measured their fitness experimentally. Our findings indicate that stabilizing
mutations can have higher fitness, and that fitness optima do not necessarily
coincide with energy minima.
article_processing_charge: No
author:
- first_name: Rodrigo A
full_name: Fernandes Redondo, Rodrigo A
id: 409D5C96-F248-11E8-B48F-1D18A9856A87
last_name: Fernandes Redondo
orcid: 0000-0002-5837-2793
- first_name: Harold
full_name: de Vladar, Harold
id: 2A181218-F248-11E8-B48F-1D18A9856A87
last_name: de Vladar
orcid: 0000-0002-5985-7653
- first_name: Tomasz
full_name: Włodarski, Tomasz
last_name: Włodarski
- first_name: Jonathan P
full_name: Bollback, Jonathan P
id: 2C6FA9CC-F248-11E8-B48F-1D18A9856A87
last_name: Bollback
orcid: 0000-0002-4624-4612
citation:
ama: Fernandes Redondo RA, de Vladar H, Włodarski T, Bollback JP. Data from evolutionary
interplay between structure, energy and epistasis in the coat protein of the ϕX174
phage family. 2016. doi:10.6084/m9.figshare.4315652.v1
apa: Fernandes Redondo, R. A., de Vladar, H., Włodarski, T., & Bollback, J.
P. (2016). Data from evolutionary interplay between structure, energy and epistasis
in the coat protein of the ϕX174 phage family. The Royal Society. https://doi.org/10.6084/m9.figshare.4315652.v1
chicago: Fernandes Redondo, Rodrigo A, Harold de Vladar, Tomasz Włodarski, and Jonathan
P Bollback. “Data from Evolutionary Interplay between Structure, Energy and Epistasis
in the Coat Protein of the ΦX174 Phage Family.” The Royal Society, 2016. https://doi.org/10.6084/m9.figshare.4315652.v1.
ieee: R. A. Fernandes Redondo, H. de Vladar, T. Włodarski, and J. P. Bollback, “Data
from evolutionary interplay between structure, energy and epistasis in the coat
protein of the ϕX174 phage family.” The Royal Society, 2016.
ista: Fernandes Redondo RA, de Vladar H, Włodarski T, Bollback JP. 2016. Data from
evolutionary interplay between structure, energy and epistasis in the coat protein
of the ϕX174 phage family, The Royal Society, 10.6084/m9.figshare.4315652.v1.
mla: Fernandes Redondo, Rodrigo A., et al. Data from Evolutionary Interplay between
Structure, Energy and Epistasis in the Coat Protein of the ΦX174 Phage Family.
The Royal Society, 2016, doi:10.6084/m9.figshare.4315652.v1.
short: R.A. Fernandes Redondo, H. de Vladar, T. Włodarski, J.P. Bollback, (2016).
date_created: 2021-08-10T08:29:47Z
date_published: 2016-12-14T00:00:00Z
date_updated: 2023-09-20T11:56:33Z
day: '14'
department:
- _id: NiBa
- _id: JoBo
doi: 10.6084/m9.figshare.4315652.v1
main_file_link:
- open_access: '1'
url: https://doi.org/10.6084/m9.figshare.4315652.v1
month: '12'
oa: 1
oa_version: Published Version
publisher: The Royal Society
related_material:
record:
- id: '1077'
relation: used_in_publication
status: public
status: public
title: Data from evolutionary interplay between structure, energy and epistasis in
the coat protein of the ϕX174 phage family
type: research_data_reference
user_id: 6785fbc1-c503-11eb-8a32-93094b40e1cf
year: '2016'
...
---
_id: '1382'
abstract:
- lang: eng
text: Background and aims Angiosperms display remarkable diversity in flower colour,
implying that transitions between pigmentation phenotypes must have been common.
Despite progress in understanding transitions between anthocyanin (blue, purple,
pink or red) and unpigmented (white) flowers, little is known about the evolutionary
patterns of flower-colour transitions in lineages with both yellow and anthocyanin-pigmented
flowers. This study investigates the relative rates of evolutionary transitions
between different combinations of yellow- and anthocyanin-pigmentation phenotypes
in the tribe Antirrhineae. Methods We surveyed taxonomic literature for data on
anthocyanin and yellow floral pigmentation for 369 species across the tribe. We
then reconstructed the phylogeny of 169 taxa and used phylogenetic comparative
methods to estimate transition rates among pigmentation phenotypes across the
phylogeny. Key Results In contrast to previous studies we found a bias towards
transitions involving a gain in pigmentation, although transitions to phenotypes
with both anthocyanin and yellow taxa are nevertheless extremely rare. Despite
the dominance of yellow and anthocyanin-pigmented taxa, transitions between these
phenotypes are constrained to move through a white intermediate stage, whereas
transitions to double-pigmentation are very rare. The most abundant transitions
are between anthocyanin-pigmented and unpigmented flowers, and similarly the most
abundant polymorphic taxa were those with anthocyanin-pigmented and unpigmented
flowers. Conclusions Our findings show that pigment evolution is limited by the
presence of other floral pigments. This interaction between anthocyanin and yellow
pigments constrains the breadth of potential floral diversity observed in nature.
In particular, they suggest that selection has repeatedly acted to promote the
spread of single-pigmented phenotypes across the Antirrhineae phylogeny. Furthermore,
the correlation between transition rates and polymorphism suggests that the forces
causing and maintaining variance in the short term reflect evolutionary processes
on longer time scales.
acknowledgement: We thank Melinda Pickup, Spencer Barrett, Nick Barton and four anonymous
reviewers for helpful discussions on previous versions of this manuscript. We also thank Jana Porsche for
her efforts in tracking down the more obscure references.
author:
- first_name: Thomas
full_name: Ellis, Thomas
id: 3153D6D4-F248-11E8-B48F-1D18A9856A87
last_name: Ellis
orcid: 0000-0002-8511-0254
- first_name: David
full_name: Field, David
id: 419049E2-F248-11E8-B48F-1D18A9856A87
last_name: Field
orcid: 0000-0002-4014-8478
citation:
ama: Ellis T, Field D. Repeated gains in yellow and anthocyanin pigmentation in
flower colour transitions in the Antirrhineae. Annals of Botany. 2016;117(7):1133-1140.
doi:10.1093/aob/mcw043
apa: Ellis, T., & Field, D. (2016). Repeated gains in yellow and anthocyanin
pigmentation in flower colour transitions in the Antirrhineae. Annals of Botany.
Oxford University Press. https://doi.org/10.1093/aob/mcw043
chicago: Ellis, Thomas, and David Field. “Repeated Gains in Yellow and Anthocyanin
Pigmentation in Flower Colour Transitions in the Antirrhineae.” Annals of Botany.
Oxford University Press, 2016. https://doi.org/10.1093/aob/mcw043.
ieee: T. Ellis and D. Field, “Repeated gains in yellow and anthocyanin pigmentation
in flower colour transitions in the Antirrhineae,” Annals of Botany, vol.
117, no. 7. Oxford University Press, pp. 1133–1140, 2016.
ista: Ellis T, Field D. 2016. Repeated gains in yellow and anthocyanin pigmentation
in flower colour transitions in the Antirrhineae. Annals of Botany. 117(7), 1133–1140.
mla: Ellis, Thomas, and David Field. “Repeated Gains in Yellow and Anthocyanin Pigmentation
in Flower Colour Transitions in the Antirrhineae.” Annals of Botany, vol.
117, no. 7, Oxford University Press, 2016, pp. 1133–40, doi:10.1093/aob/mcw043.
short: T. Ellis, D. Field, Annals of Botany 117 (2016) 1133–1140.
date_created: 2018-12-11T11:51:42Z
date_published: 2016-06-01T00:00:00Z
date_updated: 2024-02-21T13:49:53Z
day: '1'
department:
- _id: NiBa
doi: 10.1093/aob/mcw043
intvolume: ' 117'
issue: '7'
language:
- iso: eng
month: '06'
oa_version: None
page: 1133 - 1140
publication: Annals of Botany
publication_status: published
publisher: Oxford University Press
publist_id: '5828'
quality_controlled: '1'
related_material:
record:
- id: '5550'
relation: popular_science
status: public
scopus_import: 1
status: public
title: Repeated gains in yellow and anthocyanin pigmentation in flower colour transitions
in the Antirrhineae
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 117
year: '2016'
...
---
_id: '5550'
abstract:
- lang: eng
text: "We collected flower colour information on species in the tribe Antirrhineae
from taxonomic literature. We also retreived molecular data from GenBank for as
many of these species as possible to estimate phylogenetic relationships among
these taxa. We then used the R package 'diversitree' to examine patterns of evolutionary
transitions between anthocyanin and yellow pigmentation across the phylogeny.\r\n\r\nFor
full details of the methods see:\r\nEllis TJ and Field DL \"Repeated gains in
yellow and anthocyanin pigmentation in flower colour transitions in the Antirrhineae”,
Annals of Botany (in press)"
article_processing_charge: No
author:
- first_name: Thomas
full_name: Ellis, Thomas
id: 3153D6D4-F248-11E8-B48F-1D18A9856A87
last_name: Ellis
orcid: 0000-0002-8511-0254
- first_name: David
full_name: Field, David
id: 419049E2-F248-11E8-B48F-1D18A9856A87
last_name: Field
orcid: 0000-0002-4014-8478
citation:
ama: Ellis T, Field D. Flower colour data and phylogeny (NEXUS) files. 2016. doi:10.15479/AT:ISTA:34
apa: Ellis, T., & Field, D. (2016). Flower colour data and phylogeny (NEXUS)
files. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:34
chicago: Ellis, Thomas, and David Field. “Flower Colour Data and Phylogeny (NEXUS)
Files.” Institute of Science and Technology Austria, 2016. https://doi.org/10.15479/AT:ISTA:34.
ieee: T. Ellis and D. Field, “Flower colour data and phylogeny (NEXUS) files.” Institute
of Science and Technology Austria, 2016.
ista: Ellis T, Field D. 2016. Flower colour data and phylogeny (NEXUS) files, Institute
of Science and Technology Austria, 10.15479/AT:ISTA:34.
mla: Ellis, Thomas, and David Field. Flower Colour Data and Phylogeny (NEXUS)
Files. Institute of Science and Technology Austria, 2016, doi:10.15479/AT:ISTA:34.
short: T. Ellis, D. Field, (2016).
datarep_id: '34'
date_created: 2018-12-12T12:31:29Z
date_published: 2016-02-19T00:00:00Z
date_updated: 2024-02-21T13:49:54Z
day: '19'
ddc:
- '576'
department:
- _id: NiBa
doi: 10.15479/AT:ISTA:34
file:
- access_level: open_access
checksum: 950f85b80427d357bfeff09608ba02e9
content_type: application/zip
creator: system
date_created: 2018-12-12T13:02:27Z
date_updated: 2020-07-14T12:47:00Z
file_id: '5594'
file_name: IST-2016-34-v1+1_tellis_flower_colour_data.zip
file_size: 4468543
relation: main_file
file_date_updated: 2020-07-14T12:47:00Z
has_accepted_license: '1'
license: https://creativecommons.org/publicdomain/zero/1.0/
month: '02'
oa: 1
oa_version: Published Version
publisher: Institute of Science and Technology Austria
publist_id: '5828'
related_material:
record:
- id: '1382'
relation: research_paper
status: public
status: public
title: Flower colour data and phylogeny (NEXUS) files
tmp:
image: /images/cc_0.png
legal_code_url: https://creativecommons.org/publicdomain/zero/1.0/legalcode
name: Creative Commons Public Domain Dedication (CC0 1.0)
short: CC0 (1.0)
type: research_data
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2016'
...
---
_id: '1398'
abstract:
- lang: eng
text: Hybrid zones represent evolutionary laboratories, where recombination brings
together alleles in combinations which have not previously been tested by selection.
This provides an excellent opportunity to test the effect of molecular variation
on fitness, and how this variation is able to spread through populations in a
natural context. The snapdragon Antirrhinum majus is polymorphic in the wild for
two loci controlling the distribution of yellow and magenta floral pigments. Where
the yellow A. m. striatum and the magenta A. m. pseudomajus meet along a valley
in the Spanish Pyrenees they form a stable hybrid zone Alleles at these loci recombine
to give striking transgressive variation for flower colour. The sharp transition
in phenotype over ~1km implies strong selection maintaining the hybrid zone. An
indirect assay of pollinator visitation in the field found that pollinators forage
in a positive-frequency dependent manner on Antirrhinum, matching previous data
on fruit set. Experimental arrays and paternity analysis of wild-pollinated seeds
demonstrated assortative mating for pigmentation alleles, and that pollinator
behaviour alone is sufficient to explain this pattern. Selection by pollinators
should be sufficiently strong to maintain the hybrid zone, although other mechanisms
may be at work. At a broader scale I examined evolutionary transitions between
yellow and anthocyanin pigmentation in the tribe Antirrhinae, and found that selection
has acted strate that pollinators are a major determinant of reproductive success
and mating patterns in wild Antirrhinum.
acknowledgement: "I am indebted to many people for their support during my PhD, but
I particularly wish to thank Nick Barton for his guidance and intuition, and for
encouraging me to take the time to look beyond the immediate topic of my PhD to
understand the broader context. I am also especially grateful to David Field his
bottomless patience, invaluable advice on experimental design, analysis and scientific
writing, and for tireless work on the population surveys and genomic work without
most of my thesis could not have happened. \r\n\r\nIt has been a pleasure to work
with the combined strengths of the groups at The John Innes Centre, University of
Toulouse and IST Austria. Thanks to Enrico Coen and his group for hosting me in
Norwich in 2011 and especially for setting up the tag experiment. \r\n\r\nI thank
David Field, Desmond Bradley and Maria Clara Melo-Hurtado for organising field collections,
as well as Monique Burrus and Christophe Andalo and a large number of volunteers
for their e ff orts helping with the field work. Furthermore I thank Coline Jaworski
for providing seeds and for her input into the design of the experimental arrays,
and Matthew Couchman for maintaining the database of. \r\n\r\nIn addition to those
mentioned above, I am grateful to Melinda Pickup, Spencer Barrett, and four anonymous
reviewers for their insightful comments on sections of this manuscript. I also thank
Jana Porsche for her e ff orts in tracking down the more obscure references for
chapter 5, and Jon Bollback for his advice about the analysis. \r\n\r\nI am indebted
to Jon Ågren for his patience whilst I finished this thesis, and to Sylvia Cremer
and Magnus Nordborg for taking the time to read and evaluate the thesis given a
shorter deadline than was fair. \r\n\r\nA very positive aspect of my PhD has been
the supportive atmosphere of IST. In particular, I have come to appreciate the enormous
support from our group assistants Nicole Hotzy, Julia Asimakis, Christine Ostermann
and Jerneja Beslagic. I also thank Christian Chaloupka and Stefan Hipfinger for
their enthusiasm and readiness to help where possible in setting up our greenhouse
and experiments. "
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Thomas
full_name: Ellis, Thomas
id: 3153D6D4-F248-11E8-B48F-1D18A9856A87
last_name: Ellis
orcid: 0000-0002-8511-0254
citation:
ama: Ellis T. The role of pollinator-mediated selection in the maintenance of a
flower color polymorphism in an Antirrhinum majus hybrid zone. 2016. doi:10.15479/AT:ISTA:TH_526
apa: Ellis, T. (2016). The role of pollinator-mediated selection in the maintenance
of a flower color polymorphism in an Antirrhinum majus hybrid zone. Institute
of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:TH_526
chicago: Ellis, Thomas. “The Role of Pollinator-Mediated Selection in the Maintenance
of a Flower Color Polymorphism in an Antirrhinum Majus Hybrid Zone.” Institute
of Science and Technology Austria, 2016. https://doi.org/10.15479/AT:ISTA:TH_526 .
ieee: T. Ellis, “The role of pollinator-mediated selection in the maintenance of
a flower color polymorphism in an Antirrhinum majus hybrid zone,” Institute of
Science and Technology Austria, 2016.
ista: Ellis T. 2016. The role of pollinator-mediated selection in the maintenance
of a flower color polymorphism in an Antirrhinum majus hybrid zone. Institute
of Science and Technology Austria.
mla: Ellis, Thomas. The Role of Pollinator-Mediated Selection in the Maintenance
of a Flower Color Polymorphism in an Antirrhinum Majus Hybrid Zone. Institute
of Science and Technology Austria, 2016, doi:10.15479/AT:ISTA:TH_526 .
short: T. Ellis, The Role of Pollinator-Mediated Selection in the Maintenance of
a Flower Color Polymorphism in an Antirrhinum Majus Hybrid Zone, Institute of
Science and Technology Austria, 2016.
date_created: 2018-12-11T11:51:47Z
date_published: 2016-02-18T00:00:00Z
date_updated: 2024-02-21T13:51:39Z
day: '18'
ddc:
- '576'
degree_awarded: PhD
department:
- _id: NiBa
doi: '10.15479/AT:ISTA:TH_526 '
file:
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publication_status: published
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status: public
supervisor:
- first_name: Nicholas H
full_name: Barton, Nicholas H
id: 4880FE40-F248-11E8-B48F-1D18A9856A87
last_name: Barton
orcid: 0000-0002-8548-5240
title: The role of pollinator-mediated selection in the maintenance of a flower color
polymorphism in an Antirrhinum majus hybrid zone
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2016'
...
---
_id: '1131'
abstract:
- lang: eng
text: "Evolution of gene regulation is important for phenotypic evolution and diversity.
Sequence-specific binding of regulatory proteins is one of the key regulatory
mechanisms determining gene expression. Although there has been intense interest
in evolution of regulatory binding sites in the last decades, a theoretical understanding
is far from being complete. In this thesis, I aim at a better understanding of
the evolution of transcriptional regulatory binding sequences by using biophysical
and population genetic models.\r\nIn the first part of the thesis, I discuss how
to formulate the evolutionary dynamics of binding se- quences in a single isolated
binding site and in promoter/enhancer regions. I develop a theoretical framework
bridging between a thermodynamical model for transcription and a mutation-selection-drift
model for monomorphic populations. I mainly address the typical evolutionary rates,
and how they de- pend on biophysical parameters (e.g. binding length and specificity)
and population genetic parameters (e.g. population size and selection strength).\r\nIn
the second part of the thesis, I analyse empirical data for a better evolutionary
and biophysical understanding of sequence-specific binding of bacterial RNA polymerase.
First, I infer selection on regulatory and non-regulatory binding sites of RNA
polymerase in the E. coli K12 genome. Second, I infer the chemical potential of
RNA polymerase, an important but unknown physical parameter defining the threshold
energy for strong binding. Furthermore, I try to understand the relation between
the lac promoter sequence diversity and the LacZ activity variation among 20 bacterial
isolates by constructing a simple but biophysically motivated gene expression
model. Lastly, I lay out a statistical framework to predict adaptive point mutations
in de novo promoter evolution in a selection experiment."
acknowledgement: This PhD thesis may not have been completed without the help and
care I received from some peo- ple during my PhD life. I am especially grateful
to Tiago Paixao, Gasper Tkacik, Nick Barton, not only for their scientific advices
but also for their patience and support. I thank Calin Guet and Jonathan Bollback
for allowing me to “play around” in their labs and get some experience on experimental
evolution. I thank Magdalena Steinrueck and Fabienne Jesse for collaborating and
sharing their experimental data with me. I thank Johannes Jaeger for reviewing my
thesis. I thank all members of Barton group (aka bartonians) for their feedback,
and all workers of IST Austria for making the best working conditions. Lastly, I
thank two special women, Nejla Sag ̆lam and Setenay Dog ̆an, for their continuous
support and encouragement. I truly had a great chance of having right people around
me.
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Murat
full_name: Tugrul, Murat
id: 37C323C6-F248-11E8-B48F-1D18A9856A87
last_name: Tugrul
orcid: 0000-0002-8523-0758
citation:
ama: Tugrul M. Evolution of transcriptional regulatory sequences. 2016.
apa: Tugrul, M. (2016). Evolution of transcriptional regulatory sequences.
Institute of Science and Technology Austria.
chicago: Tugrul, Murat. “Evolution of Transcriptional Regulatory Sequences.” Institute
of Science and Technology Austria, 2016.
ieee: M. Tugrul, “Evolution of transcriptional regulatory sequences,” Institute
of Science and Technology Austria, 2016.
ista: Tugrul M. 2016. Evolution of transcriptional regulatory sequences. Institute
of Science and Technology Austria.
mla: Tugrul, Murat. Evolution of Transcriptional Regulatory Sequences. Institute
of Science and Technology Austria, 2016.
short: M. Tugrul, Evolution of Transcriptional Regulatory Sequences, Institute of
Science and Technology Austria, 2016.
date_created: 2018-12-11T11:50:19Z
date_published: 2016-07-01T00:00:00Z
date_updated: 2024-02-21T13:50:34Z
day: '01'
ddc:
- '576'
degree_awarded: PhD
department:
- _id: NiBa
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date_updated: 2019-08-13T08:53:52Z
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creator: dernst
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date_updated: 2021-02-22T11:45:20Z
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file_name: 2016_Tugrul_Thesis.pdf
file_size: 3880811
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language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
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publication_identifier:
issn:
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publication_status: published
publisher: Institute of Science and Technology Austria
publist_id: '6229'
related_material:
record:
- id: '1666'
relation: part_of_dissertation
status: public
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relation: research_data
status: public
status: public
supervisor:
- first_name: Nicholas H
full_name: Barton, Nicholas H
id: 4880FE40-F248-11E8-B48F-1D18A9856A87
last_name: Barton
orcid: 0000-0002-8548-5240
title: Evolution of transcriptional regulatory sequences
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2016'
...
---
_id: '5553'
abstract:
- lang: eng
text: "Genotypic, phenotypic and demographic data for 2128 wild snapdragons and
1127 open-pollinated progeny from a natural hybrid zone, collected as part of
Tom Ellis' PhD thesis (submitted) February 2016).\r\n\r\nTissue samples were sent
to LGC Genomics in Berlin for DNA extraction, and genotyping at 70 SNP markers
by KASPR genotyping. 29 of these SNPs failed to amplify reliably, and have been
removed from this dataset.\r\n\r\nOther data were retreived from an online database
of this population at www.antspec.org."
article_processing_charge: No
author:
- first_name: David
full_name: Field, David
id: 419049E2-F248-11E8-B48F-1D18A9856A87
last_name: Field
orcid: 0000-0002-4014-8478
- first_name: Thomas
full_name: Ellis, Thomas
id: 3153D6D4-F248-11E8-B48F-1D18A9856A87
last_name: Ellis
orcid: 0000-0002-8511-0254
citation:
ama: Field D, Ellis T. Inference of mating patterns among wild snapdragons in a
natural hybrid zone in 2012. 2016. doi:10.15479/AT:ISTA:37
apa: Field, D., & Ellis, T. (2016). Inference of mating patterns among wild
snapdragons in a natural hybrid zone in 2012. Institute of Science and Technology
Austria. https://doi.org/10.15479/AT:ISTA:37
chicago: Field, David, and Thomas Ellis. “Inference of Mating Patterns among Wild
Snapdragons in a Natural Hybrid Zone in 2012.” Institute of Science and Technology
Austria, 2016. https://doi.org/10.15479/AT:ISTA:37.
ieee: D. Field and T. Ellis, “Inference of mating patterns among wild snapdragons
in a natural hybrid zone in 2012.” Institute of Science and Technology Austria,
2016.
ista: Field D, Ellis T. 2016. Inference of mating patterns among wild snapdragons
in a natural hybrid zone in 2012, Institute of Science and Technology Austria,
10.15479/AT:ISTA:37.
mla: Field, David, and Thomas Ellis. Inference of Mating Patterns among Wild
Snapdragons in a Natural Hybrid Zone in 2012. Institute of Science and Technology
Austria, 2016, doi:10.15479/AT:ISTA:37.
short: D. Field, T. Ellis, (2016).
contributor:
- contributor_type: project_manager
first_name: Nicholas H
id: 4880FE40-F248-11E8-B48F-1D18A9856A87
last_name: Barton
orcid: 0000-0002-8548-5240
datarep_id: '37'
date_created: 2018-12-12T12:31:30Z
date_published: 2016-02-19T00:00:00Z
date_updated: 2024-02-21T13:51:14Z
day: '19'
ddc:
- '576'
department:
- _id: NiBa
doi: 10.15479/AT:ISTA:37
file:
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checksum: 4ae751b1fa4897fa216241f975a57313
content_type: application/zip
creator: system
date_created: 2018-12-12T13:03:02Z
date_updated: 2020-07-14T12:47:01Z
file_id: '5620'
file_name: IST-2016-37-v1+1_paternity_archive.zip
file_size: 132808
relation: main_file
file_date_updated: 2020-07-14T12:47:01Z
has_accepted_license: '1'
keyword:
- paternity assignment
- pedigree
- matting patterns
- assortative mating
- Antirrhinum majus
- frequency-dependent selection
- plant-pollinator interaction
month: '02'
oa: 1
oa_version: Published Version
publisher: Institute of Science and Technology Austria
related_material:
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title: Inference of mating patterns among wild snapdragons in a natural hybrid zone
in 2012
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user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2016'
...
---
_id: '5551'
abstract:
- lang: eng
text: "Data from array experiments investigating pollinator behaviour on snapdragons
in controlled conditions, and their effect on plant mating. Data were collected
as part of Tom Ellis' PhD thesis , submitted February 2016.\r\n\r\nWe placed a
total of 36 plants in a grid inside a closed organza tent, with a single hive
of commercially bred bumblebees (Bombus hortorum). We used only the yellow-flowered
Antirrhinum majus striatum and the magenta-flowered Antirrhinum majus pseudomajus,
at ratios of 6:36, 12:24, 18:18, 24:12 and 30:6.\r\n\r\nAfter 24 hours to learn
how to deal with snapdragons, I observed pollinators foraging on plants, and recorded
the transitions between plants. Thereafter seeds on plants were allowed to develops.
A sample of these were grown to maturity when their flower colour could be determined,
and they were scored as yellow, magenta, or hybrid."
article_processing_charge: No
author:
- first_name: Thomas
full_name: Ellis, Thomas
id: 3153D6D4-F248-11E8-B48F-1D18A9856A87
last_name: Ellis
orcid: 0000-0002-8511-0254
citation:
ama: Ellis T. Data on pollinator observations and offpsring phenotypes. 2016. doi:10.15479/AT:ISTA:35
apa: Ellis, T. (2016). Data on pollinator observations and offpsring phenotypes.
Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:35
chicago: Ellis, Thomas. “Data on Pollinator Observations and Offpsring Phenotypes.”
Institute of Science and Technology Austria, 2016. https://doi.org/10.15479/AT:ISTA:35.
ieee: T. Ellis, “Data on pollinator observations and offpsring phenotypes.” Institute
of Science and Technology Austria, 2016.
ista: Ellis T. 2016. Data on pollinator observations and offpsring phenotypes, Institute
of Science and Technology Austria, 10.15479/AT:ISTA:35.
mla: Ellis, Thomas. Data on Pollinator Observations and Offpsring Phenotypes.
Institute of Science and Technology Austria, 2016, doi:10.15479/AT:ISTA:35.
short: T. Ellis, (2016).
contributor:
- first_name: David
id: 419049E2-F248-11E8-B48F-1D18A9856A87
last_name: Field
- first_name: Nicholas H
id: 4880FE40-F248-11E8-B48F-1D18A9856A87
last_name: Barton
orcid: 0000-0002-8548-5240
datarep_id: '35'
date_created: 2018-12-12T12:31:29Z
date_published: 2016-02-19T00:00:00Z
date_updated: 2024-02-21T13:51:27Z
day: '19'
department:
- _id: NiBa
doi: 10.15479/AT:ISTA:35
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checksum: aa3eb85d52b110cd192aa23147c4d4f3
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creator: system
date_created: 2018-12-12T13:05:12Z
date_updated: 2020-07-14T12:47:01Z
file_id: '5640'
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file_size: 32775
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title: Data on pollinator observations and offpsring phenotypes
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...
---
_id: '5552'
abstract:
- lang: eng
text: "Data on pollinator visitation to wild snapdragons in a natural hybrid zone,
collected as part of Tom Ellis' PhD thesis (submitted February 2016).\r\n\r\nSnapdragon
flowers have a mouth-like structure which pollinators must open to access nectar.
We placed 5mm cellophane tags in these mouths, which are held in place by the
pressure of the flower until a pollinator visits. When she opens the flower, the
tag drops out, and one can infer a visit. We surveyed plants over multiple days
in 2010, 2011 and 2012.\r\n\r\nAlso included are data on phenotypic and demographic
variables which may be explanatory variables for pollinator visitation."
article_processing_charge: No
author:
- first_name: Thomas
full_name: Ellis, Thomas
id: 3153D6D4-F248-11E8-B48F-1D18A9856A87
last_name: Ellis
orcid: 0000-0002-8511-0254
citation:
ama: Ellis T. Pollinator visitation data for wild Antirrhinum majus plants, with
phenotypic and frequency data. 2016. doi:10.15479/AT:ISTA:36
apa: Ellis, T. (2016). Pollinator visitation data for wild Antirrhinum majus plants,
with phenotypic and frequency data. Institute of Science and Technology Austria.
https://doi.org/10.15479/AT:ISTA:36
chicago: Ellis, Thomas. “Pollinator Visitation Data for Wild Antirrhinum Majus Plants,
with Phenotypic and Frequency Data.” Institute of Science and Technology Austria,
2016. https://doi.org/10.15479/AT:ISTA:36.
ieee: T. Ellis, “Pollinator visitation data for wild Antirrhinum majus plants, with
phenotypic and frequency data.” Institute of Science and Technology Austria, 2016.
ista: Ellis T. 2016. Pollinator visitation data for wild Antirrhinum majus plants,
with phenotypic and frequency data., Institute of Science and Technology Austria,
10.15479/AT:ISTA:36.
mla: Ellis, Thomas. Pollinator Visitation Data for Wild Antirrhinum Majus Plants,
with Phenotypic and Frequency Data. Institute of Science and Technology Austria,
2016, doi:10.15479/AT:ISTA:36.
short: T. Ellis, (2016).
contributor:
- first_name: David
id: 419049E2-F248-11E8-B48F-1D18A9856A87
last_name: Field
- first_name: Nicholas H
id: 4880FE40-F248-11E8-B48F-1D18A9856A87
last_name: Barton
orcid: 0000-0002-8548-5240
datarep_id: '36'
date_created: 2018-12-12T12:31:30Z
date_published: 2016-02-19T00:00:00Z
date_updated: 2024-02-21T13:51:40Z
day: '19'
department:
- _id: NiBa
doi: 10.15479/AT:ISTA:36
file:
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checksum: cbc61b523d4d475a04a737d50dc470ef
content_type: application/zip
creator: system
date_created: 2018-12-12T13:03:07Z
date_updated: 2020-07-14T12:47:01Z
file_id: '5625'
file_name: IST-2016-36-v1+1_tag_assay_archive.zip
file_size: 44905
relation: main_file
file_date_updated: 2020-07-14T12:47:01Z
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month: '02'
oa: 1
oa_version: Published Version
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '1398'
relation: research_paper
status: public
status: public
title: Pollinator visitation data for wild Antirrhinum majus plants, with phenotypic
and frequency data.
type: research_data
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year: '2016'
...
---
_id: '5554'
abstract:
- lang: eng
text: "The data stored here is used in Murat Tugrul's PhD thesis (Chapter 3), which
is related to the evolution of bacterial RNA polymerase binding.\r\nMagdalena
Steinrueck (PhD Student in Calin Guet's group at IST Austria) performed the experiments
and created the data on de novo promoter evolution. Fabienne Jesse (PhD Student
in Jon Bollback's group at IST Austria) performed the experiments and created
the data on lac promoter evolution."
article_processing_charge: No
author:
- first_name: Murat
full_name: Tugrul, Murat
id: 37C323C6-F248-11E8-B48F-1D18A9856A87
last_name: Tugrul
orcid: 0000-0002-8523-0758
citation:
ama: Tugrul M. Experimental Data for Binding Site Evolution of Bacterial RNA Polymerase.
2016. doi:10.15479/AT:ISTA:43
apa: Tugrul, M. (2016). Experimental Data for Binding Site Evolution of Bacterial
RNA Polymerase. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:43
chicago: Tugrul, Murat. “Experimental Data for Binding Site Evolution of Bacterial
RNA Polymerase.” Institute of Science and Technology Austria, 2016. https://doi.org/10.15479/AT:ISTA:43.
ieee: M. Tugrul, “Experimental Data for Binding Site Evolution of Bacterial RNA
Polymerase.” Institute of Science and Technology Austria, 2016.
ista: Tugrul M. 2016. Experimental Data for Binding Site Evolution of Bacterial
RNA Polymerase, Institute of Science and Technology Austria, 10.15479/AT:ISTA:43.
mla: Tugrul, Murat. Experimental Data for Binding Site Evolution of Bacterial
RNA Polymerase. Institute of Science and Technology Austria, 2016, doi:10.15479/AT:ISTA:43.
short: M. Tugrul, (2016).
contributor:
- contributor_type: researcher
first_name: Magdalena
id: 2C023F40-F248-11E8-B48F-1D18A9856A87
last_name: Steinrück
- contributor_type: researcher
first_name: Fabienne
id: 4C8C26A4-F248-11E8-B48F-1D18A9856A87
last_name: Jesse
datarep_id: '43'
date_created: 2018-12-12T12:31:30Z
date_published: 2016-05-12T00:00:00Z
date_updated: 2024-02-21T13:50:34Z
day: '12'
department:
- _id: NiBa
- _id: JoBo
doi: 10.15479/AT:ISTA:43
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creator: system
date_created: 2018-12-12T13:03:08Z
date_updated: 2020-07-14T12:47:01Z
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file_size: 1123495
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keyword:
- RNAP binding
- de novo promoter evolution
- lac promoter
month: '05'
oa: 1
oa_version: Published Version
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '1131'
relation: used_in_publication
status: public
status: public
title: Experimental Data for Binding Site Evolution of Bacterial RNA Polymerase
tmp:
image: /images/cc_0.png
legal_code_url: https://creativecommons.org/publicdomain/zero/1.0/legalcode
name: Creative Commons Public Domain Dedication (CC0 1.0)
short: CC0 (1.0)
type: research_data
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2016'
...
---
_id: '1430'
abstract:
- lang: eng
text: Evolutionary algorithms (EAs) form a popular optimisation paradigm inspired
by natural evolution. In recent years the field of evolutionary computation has
developed a rigorous analytical theory to analyse their runtime on many illustrative
problems. Here we apply this theory to a simple model of natural evolution. In
the Strong Selection Weak Mutation (SSWM) evolutionary regime the time between
occurrence of new mutations is much longer than the time it takes for a new beneficial
mutation to take over the population. In this situation, the population only contains
copies of one genotype and evolution can be modelled as a (1+1)-type process where
the probability of accepting a new genotype (improvements or worsenings) depends
on the change in fitness. We present an initial runtime analysis of SSWM, quantifying
its performance for various parameters and investigating differences to the (1+1)
EA. We show that SSWM can have a moderate advantage over the (1+1) EA at crossing
fitness valleys and study an example where SSWM outperforms the (1+1) EA by taking
advantage of information on the fitness gradient.
author:
- first_name: Tiago
full_name: Paixao, Tiago
id: 2C5658E6-F248-11E8-B48F-1D18A9856A87
last_name: Paixao
orcid: 0000-0003-2361-3953
- first_name: Dirk
full_name: Sudholt, Dirk
last_name: Sudholt
- first_name: Jorge
full_name: Heredia, Jorge
last_name: Heredia
- first_name: Barbora
full_name: Trubenova, Barbora
id: 42302D54-F248-11E8-B48F-1D18A9856A87
last_name: Trubenova
orcid: 0000-0002-6873-2967
citation:
ama: 'Paixao T, Sudholt D, Heredia J, Trubenova B. First steps towards a runtime
comparison of natural and artificial evolution. In: Proceedings of the 2015
Annual Conference on Genetic and Evolutionary Computation. ACM; 2015:1455-1462.
doi:10.1145/2739480.2754758'
apa: 'Paixao, T., Sudholt, D., Heredia, J., & Trubenova, B. (2015). First steps
towards a runtime comparison of natural and artificial evolution. In Proceedings
of the 2015 Annual Conference on Genetic and Evolutionary Computation (pp.
1455–1462). Madrid, Spain: ACM. https://doi.org/10.1145/2739480.2754758'
chicago: Paixao, Tiago, Dirk Sudholt, Jorge Heredia, and Barbora Trubenova. “First
Steps towards a Runtime Comparison of Natural and Artificial Evolution.” In Proceedings
of the 2015 Annual Conference on Genetic and Evolutionary Computation, 1455–62.
ACM, 2015. https://doi.org/10.1145/2739480.2754758.
ieee: T. Paixao, D. Sudholt, J. Heredia, and B. Trubenova, “First steps towards
a runtime comparison of natural and artificial evolution,” in Proceedings of
the 2015 Annual Conference on Genetic and Evolutionary Computation, Madrid,
Spain, 2015, pp. 1455–1462.
ista: 'Paixao T, Sudholt D, Heredia J, Trubenova B. 2015. First steps towards a
runtime comparison of natural and artificial evolution. Proceedings of the 2015
Annual Conference on Genetic and Evolutionary Computation. GECCO: Genetic and
evolutionary computation conference, 1455–1462.'
mla: Paixao, Tiago, et al. “First Steps towards a Runtime Comparison of Natural
and Artificial Evolution.” Proceedings of the 2015 Annual Conference on Genetic
and Evolutionary Computation, ACM, 2015, pp. 1455–62, doi:10.1145/2739480.2754758.
short: T. Paixao, D. Sudholt, J. Heredia, B. Trubenova, in:, Proceedings of the
2015 Annual Conference on Genetic and Evolutionary Computation, ACM, 2015, pp.
1455–1462.
conference:
end_date: 2015-07-15
location: Madrid, Spain
name: 'GECCO: Genetic and evolutionary computation conference'
start_date: 2015-07-11
date_created: 2018-12-11T11:51:58Z
date_published: 2015-07-11T00:00:00Z
date_updated: 2021-01-12T06:50:41Z
day: '11'
department:
- _id: NiBa
- _id: CaGu
doi: 10.1145/2739480.2754758
ec_funded: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1504.06260
month: '07'
oa: 1
oa_version: Preprint
page: 1455 - 1462
project:
- _id: 25B1EC9E-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '618091'
name: Speed of Adaptation in Population Genetics and Evolutionary Computation
publication: Proceedings of the 2015 Annual Conference on Genetic and Evolutionary
Computation
publication_status: published
publisher: ACM
publist_id: '5768'
quality_controlled: '1'
scopus_import: 1
status: public
title: First steps towards a runtime comparison of natural and artificial evolution
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2015'
...
---
_id: '1519'
abstract:
- lang: eng
text: Evolutionary biologists have an array of powerful theoretical techniques that
can accurately predict changes in the genetic composition of populations. Changes
in gene frequencies and genetic associations between loci can be tracked as they
respond to a wide variety of evolutionary forces. However, it is often less clear
how to decompose these various forces into components that accurately reflect
the underlying biology. Here, we present several issues that arise in the definition
and interpretation of selection and selection coefficients, focusing on insights
gained through the examination of selection coefficients in multilocus notation.
Using this notation, we discuss how its flexibility-which allows different biological
units to be identified as targets of selection-is reflected in the interpretation
of the coefficients that the notation generates. In many situations, it can be
difficult to agree on whether loci can be considered to be under "direct"
versus "indirect" selection, or to quantify this selection. We present
arguments for what the terms direct and indirect selection might best encompass,
considering a range of issues, from viability and sexual selection to kin selection.
We show how multilocus notation can discriminate between direct and indirect selection,
and describe when it can do so.
author:
- first_name: Nicholas H
full_name: Barton, Nicholas H
id: 4880FE40-F248-11E8-B48F-1D18A9856A87
last_name: Barton
orcid: 0000-0002-8548-5240
- first_name: Maria
full_name: Servedio, Maria
last_name: Servedio
citation:
ama: Barton NH, Servedio M. The interpretation of selection coefficients. Evolution.
2015;69(5):1101-1112. doi:10.1111/evo.12641
apa: Barton, N. H., & Servedio, M. (2015). The interpretation of selection coefficients.
Evolution. Wiley. https://doi.org/10.1111/evo.12641
chicago: Barton, Nicholas H, and Maria Servedio. “The Interpretation of Selection
Coefficients.” Evolution. Wiley, 2015. https://doi.org/10.1111/evo.12641.
ieee: N. H. Barton and M. Servedio, “The interpretation of selection coefficients,”
Evolution, vol. 69, no. 5. Wiley, pp. 1101–1112, 2015.
ista: Barton NH, Servedio M. 2015. The interpretation of selection coefficients.
Evolution. 69(5), 1101–1112.
mla: Barton, Nicholas H., and Maria Servedio. “The Interpretation of Selection Coefficients.”
Evolution, vol. 69, no. 5, Wiley, 2015, pp. 1101–12, doi:10.1111/evo.12641.
short: N.H. Barton, M. Servedio, Evolution 69 (2015) 1101–1112.
date_created: 2018-12-11T11:52:29Z
date_published: 2015-03-19T00:00:00Z
date_updated: 2021-01-12T06:51:20Z
day: '19'
ddc:
- '570'
department:
- _id: NiBa
doi: 10.1111/evo.12641
ec_funded: 1
file:
- access_level: open_access
checksum: fd8d23f476bc194419929b72ca265c02
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:10:34Z
date_updated: 2020-07-14T12:45:00Z
file_id: '4822'
file_name: IST-2016-560-v1+1_Interpreting_ML_coefficients_11.2.15_App.pdf
file_size: 188872
relation: main_file
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checksum: b774911e70044641d556e258efcb52ef
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:10:35Z
date_updated: 2020-07-14T12:45:00Z
file_id: '4823'
file_name: IST-2016-560-v1+2_Interpreting_ML_coefficients_11.2.15_mainText.pdf
file_size: 577415
relation: main_file
file_date_updated: 2020-07-14T12:45:00Z
has_accepted_license: '1'
intvolume: ' 69'
issue: '5'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Submitted Version
page: 1101 - 1112
project:
- _id: 25B07788-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '250152'
name: Limits to selection in biology and in evolutionary computation
publication: Evolution
publication_status: published
publisher: Wiley
publist_id: '5656'
pubrep_id: '560'
quality_controlled: '1'
scopus_import: 1
status: public
title: The interpretation of selection coefficients
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 69
year: '2015'
...
---
_id: '1542'
abstract:
- lang: eng
text: 'The theory of population genetics and evolutionary computation have been
evolving separately for nearly 30 years. Many results have been independently
obtained in both fields and many others are unique to its respective field. We
aim to bridge this gap by developing a unifying framework for evolutionary processes
that allows both evolutionary algorithms and population genetics models to be
cast in the same formal framework. The framework we present here decomposes the
evolutionary process into its several components in order to facilitate the identification
of similarities between different models. In particular, we propose a classification
of evolutionary operators based on the defining properties of the different components.
We cast several commonly used operators from both fields into this common framework.
Using this, we map different evolutionary and genetic algorithms to different
evolutionary regimes and identify candidates with the most potential for the translation
of results between the fields. This provides a unified description of evolutionary
processes and represents a stepping stone towards new tools and results to both
fields. '
author:
- first_name: Tiago
full_name: Paixao, Tiago
id: 2C5658E6-F248-11E8-B48F-1D18A9856A87
last_name: Paixao
orcid: 0000-0003-2361-3953
- first_name: Golnaz
full_name: Badkobeh, Golnaz
last_name: Badkobeh
- first_name: Nicholas H
full_name: Barton, Nicholas H
id: 4880FE40-F248-11E8-B48F-1D18A9856A87
last_name: Barton
orcid: 0000-0002-8548-5240
- first_name: Doğan
full_name: Çörüş, Doğan
last_name: Çörüş
- first_name: Duccuong
full_name: Dang, Duccuong
last_name: Dang
- first_name: Tobias
full_name: Friedrich, Tobias
last_name: Friedrich
- first_name: Per
full_name: Lehre, Per
last_name: Lehre
- first_name: Dirk
full_name: Sudholt, Dirk
last_name: Sudholt
- first_name: Andrew
full_name: Sutton, Andrew
last_name: Sutton
- first_name: Barbora
full_name: Trubenova, Barbora
id: 42302D54-F248-11E8-B48F-1D18A9856A87
last_name: Trubenova
orcid: 0000-0002-6873-2967
citation:
ama: Paixao T, Badkobeh G, Barton NH, et al. Toward a unifying framework for evolutionary
processes. Journal of Theoretical Biology. 2015;383:28-43. doi:10.1016/j.jtbi.2015.07.011
apa: Paixao, T., Badkobeh, G., Barton, N. H., Çörüş, D., Dang, D., Friedrich, T.,
… Trubenova, B. (2015). Toward a unifying framework for evolutionary processes.
Journal of Theoretical Biology. Elsevier. https://doi.org/10.1016/j.jtbi.2015.07.011
chicago: Paixao, Tiago, Golnaz Badkobeh, Nicholas H Barton, Doğan Çörüş, Duccuong
Dang, Tobias Friedrich, Per Lehre, Dirk Sudholt, Andrew Sutton, and Barbora Trubenova.
“Toward a Unifying Framework for Evolutionary Processes.” Journal of Theoretical
Biology. Elsevier, 2015. https://doi.org/10.1016/j.jtbi.2015.07.011.
ieee: T. Paixao et al., “Toward a unifying framework for evolutionary processes,”
Journal of Theoretical Biology, vol. 383. Elsevier, pp. 28–43, 2015.
ista: Paixao T, Badkobeh G, Barton NH, Çörüş D, Dang D, Friedrich T, Lehre P, Sudholt
D, Sutton A, Trubenova B. 2015. Toward a unifying framework for evolutionary processes. Journal
of Theoretical Biology. 383, 28–43.
mla: Paixao, Tiago, et al. “Toward a Unifying Framework for Evolutionary Processes.”
Journal of Theoretical Biology, vol. 383, Elsevier, 2015, pp. 28–43, doi:10.1016/j.jtbi.2015.07.011.
short: T. Paixao, G. Badkobeh, N.H. Barton, D. Çörüş, D. Dang, T. Friedrich, P.
Lehre, D. Sudholt, A. Sutton, B. Trubenova, Journal of Theoretical Biology 383
(2015) 28–43.
date_created: 2018-12-11T11:52:37Z
date_published: 2015-10-21T00:00:00Z
date_updated: 2021-01-12T06:51:29Z
day: '21'
ddc:
- '570'
department:
- _id: NiBa
- _id: CaGu
doi: 10.1016/j.jtbi.2015.07.011
ec_funded: 1
file:
- access_level: open_access
checksum: 33b60ecfea60764756a9ee9df5eb65ca
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:16:53Z
date_updated: 2020-07-14T12:45:01Z
file_id: '5244'
file_name: IST-2016-483-v1+1_1-s2.0-S0022519315003409-main.pdf
file_size: 595307
relation: main_file
file_date_updated: 2020-07-14T12:45:01Z
has_accepted_license: '1'
intvolume: ' 383'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
page: 28 - 43
project:
- _id: 25B1EC9E-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '618091'
name: Speed of Adaptation in Population Genetics and Evolutionary Computation
- _id: 25B07788-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '250152'
name: Limits to selection in biology and in evolutionary computation
publication: ' Journal of Theoretical Biology'
publication_status: published
publisher: Elsevier
publist_id: '5629'
pubrep_id: '483'
quality_controlled: '1'
scopus_import: 1
status: public
title: Toward a unifying framework for evolutionary processes
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
(CC BY-NC-ND 4.0)
short: CC BY-NC-ND (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 383
year: '2015'
...
---
_id: '1699'
abstract:
- lang: eng
text: By hybridization and backcrossing, alleles can surmount species boundaries
and be incorporated into the genome of a related species. This introgression of
genes is of particular evolutionary relevance if it involves the transfer of adaptations
between populations. However, any beneficial allele will typically be associated
with other alien alleles that are often deleterious and hamper the introgression
process. In order to describe the introgression of an adaptive allele, we set
up a stochastic model with an explicit genetic makeup of linked and unlinked deleterious
alleles. Based on the theory of reducible multitype branching processes, we derive
a recursive expression for the establishment probability of the beneficial allele
after a single hybridization event. We furthermore study the probability that
slightly deleterious alleles hitchhike to fixation. The key to the analysis is
a split of the process into a stochastic phase in which the advantageous alleles
establishes and a deterministic phase in which it sweeps to fixation. We thereafter
apply the theory to a set of biologically relevant scenarios such as introgression
in the presence of many unlinked or few closely linked deleterious alleles. A
comparison to computer simulations shows that the approximations work well over
a large parameter range.
acknowledgement: This work was made possible with financial support by the Vienna
Science and Technology Fund (WWTF), by the Deutsche Forschungsgemeinschaft (DFG),
Research Unit 1078 Natural selection in structured populations, by the Austrian
Science Fund (FWF) via funding for the Vienna Graduate School for Population Genetics,
and by a “For Women in Science” fellowship (L’Oréal Österreich in cooperation with
the Austrian Commission for UNESCO and the Austrian Academy of Sciences with financial
support from the Federal Ministry for Science and Research Austria).
author:
- first_name: Hildegard
full_name: Uecker, Hildegard
id: 2DB8F68A-F248-11E8-B48F-1D18A9856A87
last_name: Uecker
orcid: 0000-0001-9435-2813
- first_name: Derek
full_name: Setter, Derek
last_name: Setter
- first_name: Joachim
full_name: Hermisson, Joachim
last_name: Hermisson
citation:
ama: Uecker H, Setter D, Hermisson J. Adaptive gene introgression after secondary
contact. Journal of Mathematical Biology. 2015;70(7):1523-1580. doi:10.1007/s00285-014-0802-y
apa: Uecker, H., Setter, D., & Hermisson, J. (2015). Adaptive gene introgression
after secondary contact. Journal of Mathematical Biology. Springer. https://doi.org/10.1007/s00285-014-0802-y
chicago: Uecker, Hildegard, Derek Setter, and Joachim Hermisson. “Adaptive Gene
Introgression after Secondary Contact.” Journal of Mathematical Biology.
Springer, 2015. https://doi.org/10.1007/s00285-014-0802-y.
ieee: H. Uecker, D. Setter, and J. Hermisson, “Adaptive gene introgression after
secondary contact,” Journal of Mathematical Biology, vol. 70, no. 7. Springer,
pp. 1523–1580, 2015.
ista: Uecker H, Setter D, Hermisson J. 2015. Adaptive gene introgression after secondary
contact. Journal of Mathematical Biology. 70(7), 1523–1580.
mla: Uecker, Hildegard, et al. “Adaptive Gene Introgression after Secondary Contact.”
Journal of Mathematical Biology, vol. 70, no. 7, Springer, 2015, pp. 1523–80,
doi:10.1007/s00285-014-0802-y.
short: H. Uecker, D. Setter, J. Hermisson, Journal of Mathematical Biology 70 (2015)
1523–1580.
date_created: 2018-12-11T11:53:32Z
date_published: 2015-06-01T00:00:00Z
date_updated: 2023-02-23T10:10:36Z
day: '01'
ddc:
- '576'
department:
- _id: NiBa
doi: 10.1007/s00285-014-0802-y
file:
- access_level: open_access
checksum: 00e3a67bda05d4cc165b3a48b41ef9ad
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:14:27Z
date_updated: 2020-07-14T12:45:12Z
file_id: '5079'
file_name: IST-2016-458-v1+1_s00285-014-0802-y.pdf
file_size: 1321527
relation: main_file
file_date_updated: 2020-07-14T12:45:12Z
has_accepted_license: '1'
intvolume: ' 70'
issue: '7'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: 1523 - 1580
project:
- _id: 25B67606-B435-11E9-9278-68D0E5697425
name: L'OREAL Fellowship
publication: Journal of Mathematical Biology
publication_status: published
publisher: Springer
publist_id: '5442'
pubrep_id: '458'
quality_controlled: '1'
scopus_import: 1
status: public
title: Adaptive gene introgression after secondary contact
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 70
year: '2015'
...
---
_id: '1703'
abstract:
- lang: eng
text: Vegetation clearing and land-use change have depleted many natural plant communities
to the point where restoration is required. A major impediment to the success
of rebuilding complex vegetation communities is having regular access to sufficient
quantities of high-quality seed. Seed-production areas (SPAs) can help generate
this seed, but these must be underpinned by a broad genetic base to maximise the
evolutionary potential of restored populations. However, genetic bottlenecks can
occur at the collection, establishment and production stages in SPAs, requiring
genetic evaluation. This is especially relevant for species that may take many
years before a return on SPA investment is realised. Two recently established
yellow box (Eucalyptus melliodora A.Cunn. ex Schauer, Myrtaceae) SPAs were evaluated
to determine whether genetic bottlenecks had occurred between seed collection
and SPA establishment. No evidence was found to suggest that a significant loss
of genetic diversity had occurred at this stage, although there was a significant
difference in diversity between the two SPAs. Complex population genetic structure
was also observed in the seed used to source the SPAs, with up to eight groups
identified. Plant survival in the SPAs was influenced by seed collection location
but not by SPA location and was not associated with genetic diversity. There were
also no associations between genetic diversity and plant growth. These data highlighted
the importance of chance events when establishing SPAs and indicated that the
two yellow box SPAs are likely to provide genetically diverse seed sources for
future restoration projects, especially by pooling seed from both SPAs.
author:
- first_name: Linda
full_name: Broadhurst, Linda
last_name: Broadhurst
- first_name: Graham
full_name: Fifield, Graham
last_name: Fifield
- first_name: Bindi
full_name: Vanzella, Bindi
last_name: Vanzella
- first_name: Melinda
full_name: Pickup, Melinda
id: 2C78037E-F248-11E8-B48F-1D18A9856A87
last_name: Pickup
orcid: 0000-0001-6118-0541
citation:
ama: Broadhurst L, Fifield G, Vanzella B, Pickup M. An evaluation of the genetic
structure of seed sources and the maintenance of genetic diversity during establishment
of two yellow box (Eucalyptus melliodora) seed-production areas. Australian
Journal of Botany. 2015;63(5):455-466. doi:10.1071/BT15023
apa: Broadhurst, L., Fifield, G., Vanzella, B., & Pickup, M. (2015). An evaluation
of the genetic structure of seed sources and the maintenance of genetic diversity
during establishment of two yellow box (Eucalyptus melliodora) seed-production
areas. Australian Journal of Botany. CSIRO. https://doi.org/10.1071/BT15023
chicago: Broadhurst, Linda, Graham Fifield, Bindi Vanzella, and Melinda Pickup.
“An Evaluation of the Genetic Structure of Seed Sources and the Maintenance of
Genetic Diversity during Establishment of Two Yellow Box (Eucalyptus Melliodora)
Seed-Production Areas.” Australian Journal of Botany. CSIRO, 2015. https://doi.org/10.1071/BT15023.
ieee: L. Broadhurst, G. Fifield, B. Vanzella, and M. Pickup, “An evaluation of the
genetic structure of seed sources and the maintenance of genetic diversity during
establishment of two yellow box (Eucalyptus melliodora) seed-production areas,”
Australian Journal of Botany, vol. 63, no. 5. CSIRO, pp. 455–466, 2015.
ista: Broadhurst L, Fifield G, Vanzella B, Pickup M. 2015. An evaluation of the
genetic structure of seed sources and the maintenance of genetic diversity during
establishment of two yellow box (Eucalyptus melliodora) seed-production areas.
Australian Journal of Botany. 63(5), 455–466.
mla: Broadhurst, Linda, et al. “An Evaluation of the Genetic Structure of Seed Sources
and the Maintenance of Genetic Diversity during Establishment of Two Yellow Box
(Eucalyptus Melliodora) Seed-Production Areas.” Australian Journal of Botany,
vol. 63, no. 5, CSIRO, 2015, pp. 455–66, doi:10.1071/BT15023.
short: L. Broadhurst, G. Fifield, B. Vanzella, M. Pickup, Australian Journal of
Botany 63 (2015) 455–466.
date_created: 2018-12-11T11:53:34Z
date_published: 2015-05-26T00:00:00Z
date_updated: 2021-01-12T06:52:38Z
day: '26'
department:
- _id: NiBa
doi: 10.1071/BT15023
intvolume: ' 63'
issue: '5'
language:
- iso: eng
month: '05'
oa_version: None
page: 455 - 466
publication: Australian Journal of Botany
publication_status: published
publisher: CSIRO
publist_id: '5434'
quality_controlled: '1'
scopus_import: 1
status: public
title: An evaluation of the genetic structure of seed sources and the maintenance
of genetic diversity during establishment of two yellow box (Eucalyptus melliodora)
seed-production areas
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 63
year: '2015'
...
---
_id: '1818'
abstract:
- lang: eng
text: 'Why do species not adapt to ever-wider ranges of conditions, gradually expanding
their ecological niche and geographic range? Gene flow across environments has
two conflicting effects: although it increases genetic variation, which is a prerequisite
for adaptation, gene flow may swamp adaptation to local conditions. In 1956, Haldane
proposed that, when the environment varies across space, "swamping"
by gene flow creates a positive feedback between low population size and maladaptation,
leading to a sharp range margin. However, current deterministic theory shows that,
when variance can evolve, there is no such limit. Using simple analytical tools
and simulations, we show that genetic drift can generate a sharp margin to a species''
range, by reducing genetic variance below the level needed for adaptation to spatially
variable conditions. Aided by separation of ecological and evolutionary timescales,
the identified effective dimensionless parameters reveal a simple threshold that
predicts when adaptation at the range margin fails. Two observable parameters
determine the threshold: (i) the effective environmental gradient, which can be
measured by the loss of fitness due to dispersal to a different environment; and
(ii) the efficacy of selection relative to genetic drift. The theory predicts
sharp range margins even in the absence of abrupt changes in the environment.
Furthermore, it implies that gradual worsening of conditions across a species''
habitat may lead to a sudden range fragmentation, when adaptation to a wide span
of conditions within a single species becomes impossible.'
author:
- first_name: Jitka
full_name: Polechova, Jitka
id: 3BBFB084-F248-11E8-B48F-1D18A9856A87
last_name: Polechova
orcid: 0000-0003-0951-3112
- first_name: Nicholas H
full_name: Barton, Nicholas H
id: 4880FE40-F248-11E8-B48F-1D18A9856A87
last_name: Barton
orcid: 0000-0002-8548-5240
citation:
ama: Polechova J, Barton NH. Limits to adaptation along environmental gradients.
PNAS. 2015;112(20):6401-6406. doi:10.1073/pnas.1421515112
apa: Polechova, J., & Barton, N. H. (2015). Limits to adaptation along environmental
gradients. PNAS. National Academy of Sciences. https://doi.org/10.1073/pnas.1421515112
chicago: Polechova, Jitka, and Nicholas H Barton. “Limits to Adaptation along Environmental
Gradients.” PNAS. National Academy of Sciences, 2015. https://doi.org/10.1073/pnas.1421515112.
ieee: J. Polechova and N. H. Barton, “Limits to adaptation along environmental gradients,”
PNAS, vol. 112, no. 20. National Academy of Sciences, pp. 6401–6406, 2015.
ista: Polechova J, Barton NH. 2015. Limits to adaptation along environmental gradients.
PNAS. 112(20), 6401–6406.
mla: Polechova, Jitka, and Nicholas H. Barton. “Limits to Adaptation along Environmental
Gradients.” PNAS, vol. 112, no. 20, National Academy of Sciences, 2015,
pp. 6401–06, doi:10.1073/pnas.1421515112.
short: J. Polechova, N.H. Barton, PNAS 112 (2015) 6401–6406.
date_created: 2018-12-11T11:54:11Z
date_published: 2015-05-19T00:00:00Z
date_updated: 2021-01-12T06:53:24Z
day: '19'
department:
- _id: NiBa
doi: 10.1073/pnas.1421515112
ec_funded: 1
external_id:
pmid:
- '25941385'
intvolume: ' 112'
issue: '20'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4443383/
month: '05'
oa: 1
oa_version: Submitted Version
page: 6401 - 6406
pmid: 1
project:
- _id: 25B07788-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '250152'
name: Limits to selection in biology and in evolutionary computation
publication: PNAS
publication_status: published
publisher: National Academy of Sciences
publist_id: '5288'
quality_controlled: '1'
scopus_import: 1
status: public
title: Limits to adaptation along environmental gradients
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 112
year: '2015'
...
---
_id: '1850'
abstract:
- lang: eng
text: 'Entomopathogenic fungi are potent biocontrol agents that are widely used
against insect pests, many of which are social insects. Nevertheless, theoretical
investigations of their particular life history are scarce. We develop a model
that takes into account the main distinguishing features between traditionally
studied diseases and obligate killing pathogens, like the (biocontrol-relevant)
insect-pathogenic fungi Metarhizium and Beauveria. First, obligate killing entomopathogenic
fungi produce new infectious particles (conidiospores) only after host death and
not yet on the living host. Second, the killing rates of entomopathogenic fungi
depend strongly on the initial exposure dosage, thus we explicitly consider the
pathogen load of individual hosts. Further, we make the model applicable not only
to solitary host species, but also to group living species by incorporating social
interactions between hosts, like the collective disease defences of insect societies.
Our results identify the optimal killing rate for the pathogen that minimises
its invasion threshold. Furthermore, we find that the rate of contact between
hosts has an ambivalent effect: dense interaction networks between individuals
are considered to facilitate disease outbreaks because of increased pathogen transmission.
In social insects, this is compensated by their collective disease defences, i.e.,
social immunity. For the type of pathogens considered here, we show that even
without social immunity, high contact rates between live individuals dilute the
pathogen in the host colony and hence can reduce individual pathogen loads below
disease-causing levels.'
author:
- first_name: Sebastian
full_name: Novak, Sebastian
id: 461468AE-F248-11E8-B48F-1D18A9856A87
last_name: Novak
- first_name: Sylvia
full_name: Cremer, Sylvia
id: 2F64EC8C-F248-11E8-B48F-1D18A9856A87
last_name: Cremer
orcid: 0000-0002-2193-3868
citation:
ama: 'Novak S, Cremer S. Fungal disease dynamics in insect societies: Optimal killing
rates and the ambivalent effect of high social interaction rates. Journal of
Theoretical Biology. 2015;372(5):54-64. doi:10.1016/j.jtbi.2015.02.018'
apa: 'Novak, S., & Cremer, S. (2015). Fungal disease dynamics in insect societies:
Optimal killing rates and the ambivalent effect of high social interaction rates.
Journal of Theoretical Biology. Elsevier. https://doi.org/10.1016/j.jtbi.2015.02.018'
chicago: 'Novak, Sebastian, and Sylvia Cremer. “Fungal Disease Dynamics in Insect
Societies: Optimal Killing Rates and the Ambivalent Effect of High Social Interaction
Rates.” Journal of Theoretical Biology. Elsevier, 2015. https://doi.org/10.1016/j.jtbi.2015.02.018.'
ieee: 'S. Novak and S. Cremer, “Fungal disease dynamics in insect societies: Optimal
killing rates and the ambivalent effect of high social interaction rates,” Journal
of Theoretical Biology, vol. 372, no. 5. Elsevier, pp. 54–64, 2015.'
ista: 'Novak S, Cremer S. 2015. Fungal disease dynamics in insect societies: Optimal
killing rates and the ambivalent effect of high social interaction rates. Journal
of Theoretical Biology. 372(5), 54–64.'
mla: 'Novak, Sebastian, and Sylvia Cremer. “Fungal Disease Dynamics in Insect Societies:
Optimal Killing Rates and the Ambivalent Effect of High Social Interaction Rates.”
Journal of Theoretical Biology, vol. 372, no. 5, Elsevier, 2015, pp. 54–64,
doi:10.1016/j.jtbi.2015.02.018.'
short: S. Novak, S. Cremer, Journal of Theoretical Biology 372 (2015) 54–64.
date_created: 2018-12-11T11:54:21Z
date_published: 2015-05-07T00:00:00Z
date_updated: 2021-01-12T06:53:37Z
day: '07'
ddc:
- '576'
department:
- _id: NiBa
- _id: SyCr
doi: 10.1016/j.jtbi.2015.02.018
ec_funded: 1
file:
- access_level: open_access
checksum: 3c0dcacc900bc45cc65a453dfda4ca43
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:18:07Z
date_updated: 2020-07-14T12:45:19Z
file_id: '5326'
file_name: IST-2015-329-v1+1_manuscript.pdf
file_size: 1546914
relation: main_file
file_date_updated: 2020-07-14T12:45:19Z
has_accepted_license: '1'
intvolume: ' 372'
issue: '5'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Submitted Version
page: 54 - 64
project:
- _id: 25B07788-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '250152'
name: Limits to selection in biology and in evolutionary computation
- _id: 25DC711C-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '243071'
name: 'Social Vaccination in Ant Colonies: from Individual Mechanisms to Society
Effects'
publication: Journal of Theoretical Biology
publication_status: published
publisher: Elsevier
publist_id: '5251'
pubrep_id: '329'
quality_controlled: '1'
scopus_import: 1
status: public
title: 'Fungal disease dynamics in insect societies: Optimal killing rates and the
ambivalent effect of high social interaction rates'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 372
year: '2015'
...
---
_id: '1851'
abstract:
- lang: eng
text: We consider mating strategies for females who search for males sequentially
during a season of limited length. We show that the best strategy rejects a given
male type if encountered before a time-threshold but accepts him after. For frequency-independent
benefits, we obtain the optimal time-thresholds explicitly for both discrete and
continuous distributions of males, and allow for mistakes being made in assessing
the correct male type. When the benefits are indirect (genes for the offspring)
and the population is under frequency-dependent ecological selection, the benefits
depend on the mating strategy of other females as well. This case is particularly
relevant to speciation models that seek to explore the stability of reproductive
isolation by assortative mating under frequency-dependent ecological selection.
We show that the indirect benefits are to be quantified by the reproductive values
of couples, and describe how the evolutionarily stable time-thresholds can be
found. We conclude with an example based on the Levene model, in which we analyze
the evolutionarily stable assortative mating strategies and the strength of reproductive
isolation provided by them.
article_processing_charge: No
article_type: original
author:
- first_name: Tadeas
full_name: Priklopil, Tadeas
id: 3C869AA0-F248-11E8-B48F-1D18A9856A87
last_name: Priklopil
- first_name: Eva
full_name: Kisdi, Eva
last_name: Kisdi
- first_name: Mats
full_name: Gyllenberg, Mats
last_name: Gyllenberg
citation:
ama: Priklopil T, Kisdi E, Gyllenberg M. Evolutionarily stable mating decisions
for sequentially searching females and the stability of reproductive isolation
by assortative mating. Evolution. 2015;69(4):1015-1026. doi:10.1111/evo.12618
apa: Priklopil, T., Kisdi, E., & Gyllenberg, M. (2015). Evolutionarily stable
mating decisions for sequentially searching females and the stability of reproductive
isolation by assortative mating. Evolution. Wiley. https://doi.org/10.1111/evo.12618
chicago: Priklopil, Tadeas, Eva Kisdi, and Mats Gyllenberg. “Evolutionarily Stable
Mating Decisions for Sequentially Searching Females and the Stability of Reproductive
Isolation by Assortative Mating.” Evolution. Wiley, 2015. https://doi.org/10.1111/evo.12618.
ieee: T. Priklopil, E. Kisdi, and M. Gyllenberg, “Evolutionarily stable mating decisions
for sequentially searching females and the stability of reproductive isolation
by assortative mating,” Evolution, vol. 69, no. 4. Wiley, pp. 1015–1026,
2015.
ista: Priklopil T, Kisdi E, Gyllenberg M. 2015. Evolutionarily stable mating decisions
for sequentially searching females and the stability of reproductive isolation
by assortative mating. Evolution. 69(4), 1015–1026.
mla: Priklopil, Tadeas, et al. “Evolutionarily Stable Mating Decisions for Sequentially
Searching Females and the Stability of Reproductive Isolation by Assortative Mating.”
Evolution, vol. 69, no. 4, Wiley, 2015, pp. 1015–26, doi:10.1111/evo.12618.
short: T. Priklopil, E. Kisdi, M. Gyllenberg, Evolution 69 (2015) 1015–1026.
date_created: 2018-12-11T11:54:21Z
date_published: 2015-02-09T00:00:00Z
date_updated: 2022-06-07T10:52:37Z
day: '09'
ddc:
- '570'
department:
- _id: NiBa
- _id: KrCh
doi: 10.1111/evo.12618
ec_funded: 1
external_id:
pmid:
- '25662095'
file:
- access_level: open_access
checksum: 1e8be0b1d7598a78cd2623d8ee8e7798
content_type: application/pdf
creator: dernst
date_created: 2020-05-15T09:05:34Z
date_updated: 2020-07-14T12:45:19Z
file_id: '7855'
file_name: 2015_Evolution_Priklopil.pdf
file_size: 967214
relation: main_file
file_date_updated: 2020-07-14T12:45:19Z
has_accepted_license: '1'
intvolume: ' 69'
issue: '4'
language:
- iso: eng
month: '02'
oa: 1
oa_version: Submitted Version
page: 1015 - 1026
pmid: 1
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: Evolution
publication_identifier:
eissn:
- 1558-5646
issn:
- 0014-3820
publication_status: published
publisher: Wiley
publist_id: '5249'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Evolutionarily stable mating decisions for sequentially searching females and
the stability of reproductive isolation by assortative mating
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 69
year: '2015'
...