---
_id: '14'
abstract:
- lang: eng
text: The intercellular transport of auxin is driven by PIN-formed (PIN) auxin efflux
carriers. PINs are localized at the plasma membrane (PM) and on constitutively
recycling endomembrane vesicles. Therefore, PINs can mediate auxin transport either
by direct translocation across the PM or by pumping auxin into secretory vesicles
(SVs), leading to its secretory release upon fusion with the PM. Which of these
two mechanisms dominates is a matter of debate. Here, we addressed the issue with
a mathematical modeling approach. We demonstrate that the efficiency of secretory
transport depends on SV size, half-life of PINs on the PM, pH, exocytosis frequency
and PIN density. 3D structured illumination microscopy (SIM) was used to determine
PIN density on the PM. Combining this data with published values of the other
parameters, we show that the transport activity of PINs in SVs would have to be
at least 1000× greater than on the PM in order to produce a comparable macroscopic
auxin transport. If both transport mechanisms operated simultaneously and PINs
were equally active on SVs and PM, the contribution of secretion to the total
auxin flux would be negligible. In conclusion, while secretory vesicle-mediated
transport of auxin is an intriguing and theoretically possible model, it is unlikely
to be a major mechanism of auxin transport inplanta.
acknowledgement: 'European Research Council (ERC): 742985 to Jiri Friml; M.A. was
supported by the Austrian Science Fund (FWF) (M2379-B28); AJ was supported by the
Austria Science Fund (FWF): I03630 to Jiri Friml.'
article_processing_charge: No
article_type: original
author:
- first_name: Sander
full_name: Hille, Sander
last_name: Hille
- first_name: Maria
full_name: Akhmanova, Maria
id: 3425EC26-F248-11E8-B48F-1D18A9856A87
last_name: Akhmanova
orcid: 0000-0003-1522-3162
- first_name: Matous
full_name: Glanc, Matous
id: 1AE1EA24-02D0-11E9-9BAA-DAF4881429F2
last_name: Glanc
orcid: 0000-0003-0619-7783
- first_name: Alexander J
full_name: Johnson, Alexander J
id: 46A62C3A-F248-11E8-B48F-1D18A9856A87
last_name: Johnson
orcid: 0000-0002-2739-8843
- first_name: Jirí
full_name: Friml, Jirí
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
citation:
ama: 'Hille S, Akhmanova M, Glanc M, Johnson AJ, Friml J. Relative contribution
of PIN-containing secretory vesicles and plasma membrane PINs to the directed
auxin transport: Theoretical estimation. International Journal of Molecular
Sciences. 2018;19(11). doi:10.3390/ijms19113566'
apa: 'Hille, S., Akhmanova, M., Glanc, M., Johnson, A. J., & Friml, J. (2018).
Relative contribution of PIN-containing secretory vesicles and plasma membrane
PINs to the directed auxin transport: Theoretical estimation. International
Journal of Molecular Sciences. MDPI. https://doi.org/10.3390/ijms19113566'
chicago: 'Hille, Sander, Maria Akhmanova, Matous Glanc, Alexander J Johnson, and
Jiří Friml. “Relative Contribution of PIN-Containing Secretory Vesicles and Plasma
Membrane PINs to the Directed Auxin Transport: Theoretical Estimation.” International
Journal of Molecular Sciences. MDPI, 2018. https://doi.org/10.3390/ijms19113566.'
ieee: 'S. Hille, M. Akhmanova, M. Glanc, A. J. Johnson, and J. Friml, “Relative
contribution of PIN-containing secretory vesicles and plasma membrane PINs to
the directed auxin transport: Theoretical estimation,” International Journal
of Molecular Sciences, vol. 19, no. 11. MDPI, 2018.'
ista: 'Hille S, Akhmanova M, Glanc M, Johnson AJ, Friml J. 2018. Relative contribution
of PIN-containing secretory vesicles and plasma membrane PINs to the directed
auxin transport: Theoretical estimation. International Journal of Molecular Sciences.
19(11).'
mla: 'Hille, Sander, et al. “Relative Contribution of PIN-Containing Secretory Vesicles
and Plasma Membrane PINs to the Directed Auxin Transport: Theoretical Estimation.”
International Journal of Molecular Sciences, vol. 19, no. 11, MDPI, 2018,
doi:10.3390/ijms19113566.'
short: S. Hille, M. Akhmanova, M. Glanc, A.J. Johnson, J. Friml, International Journal
of Molecular Sciences 19 (2018).
date_created: 2018-12-11T11:44:09Z
date_published: 2018-11-12T00:00:00Z
date_updated: 2023-09-18T08:09:32Z
day: '12'
ddc:
- '580'
department:
- _id: DaSi
- _id: JiFr
doi: 10.3390/ijms19113566
ec_funded: 1
external_id:
isi:
- '000451528500282'
file:
- access_level: open_access
checksum: e4b59c2599b0ca26ebf5b8434bcde94a
content_type: application/pdf
creator: dernst
date_created: 2018-12-17T16:04:11Z
date_updated: 2020-07-14T12:44:50Z
file_id: '5719'
file_name: 2018_IJMS_Hille.pdf
file_size: 2200593
relation: main_file
file_date_updated: 2020-07-14T12:44:50Z
has_accepted_license: '1'
intvolume: ' 19'
isi: 1
issue: '11'
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
project:
- _id: 261099A6-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '742985'
name: Tracing Evolution of Auxin Transport and Polarity in Plants
- _id: 26538374-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: I03630
name: Molecular mechanisms of endocytic cargo recognition in plants
publication: International Journal of Molecular Sciences
publication_identifier:
eissn:
- 1422-0067
publication_status: published
publisher: MDPI
publist_id: '8042'
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Relative contribution of PIN-containing secretory vesicles and plasma membrane
PINs to the directed auxin transport: Theoretical estimation'
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: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 19
year: '2018'
...
---
_id: '39'
abstract:
- lang: eng
text: We study how a block of genome with a large number of weakly selected loci
introgresses under directional selection into a genetically homogeneous population.
We derive exact expressions for the expected rate of growth of any fragment of
the introduced block during the initial phase of introgression, and show that
the growth rate of a single-locus variant is largely insensitive to its own additive
effect, but depends instead on the combined effect of all loci within a characteristic
linkage scale. The expected growth rate of a fragment is highly correlated with
its long-term introgression probability in populations of moderate size, and can
hence identify variants that are likely to introgress across replicate populations.
We clarify how the introgression probability of an individual variant is determined
by the interplay between hitchhiking with relatively large fragments during the
early phase of introgression and selection on fine-scale variation within these,
which at longer times results in differential introgression probabilities for
beneficial and deleterious loci within successful fragments. By simulating individuals,
we also investigate how introgression probabilities at individual loci depend
on the variance of fitness effects, the net fitness of the introduced block, and
the size of the recipient population, and how this shapes the net advance under
selection. Our work suggests that even highly replicable substitutions may be
associated with a range of selective effects, which makes it challenging to fine
map the causal loci that underlie polygenic adaptation.
article_processing_charge: No
article_type: original
author:
- first_name: Himani
full_name: Sachdeva, Himani
id: 42377A0A-F248-11E8-B48F-1D18A9856A87
last_name: Sachdeva
- 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: Sachdeva H, Barton NH. Replicability of introgression under linked, polygenic
selection. Genetics. 2018;210(4):1411-1427. doi:10.1534/genetics.118.301429
apa: Sachdeva, H., & Barton, N. H. (2018). Replicability of introgression under
linked, polygenic selection. Genetics. Genetics Society of America. https://doi.org/10.1534/genetics.118.301429
chicago: Sachdeva, Himani, and Nicholas H Barton. “Replicability of Introgression
under Linked, Polygenic Selection.” Genetics. Genetics Society of America,
2018. https://doi.org/10.1534/genetics.118.301429.
ieee: H. Sachdeva and N. H. Barton, “Replicability of introgression under linked,
polygenic selection,” Genetics, vol. 210, no. 4. Genetics Society of America,
pp. 1411–1427, 2018.
ista: Sachdeva H, Barton NH. 2018. Replicability of introgression under linked,
polygenic selection. Genetics. 210(4), 1411–1427.
mla: Sachdeva, Himani, and Nicholas H. Barton. “Replicability of Introgression under
Linked, Polygenic Selection.” Genetics, vol. 210, no. 4, Genetics Society
of America, 2018, pp. 1411–27, doi:10.1534/genetics.118.301429.
short: H. Sachdeva, N.H. Barton, Genetics 210 (2018) 1411–1427.
date_created: 2018-12-11T11:44:18Z
date_published: 2018-12-04T00:00:00Z
date_updated: 2023-09-18T08:10:29Z
day: '04'
department:
- _id: NiBa
doi: 10.1534/genetics.118.301429
external_id:
isi:
- '000452315900021'
intvolume: ' 210'
isi: 1
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.biorxiv.org/content/10.1101/379578v1
month: '12'
oa: 1
oa_version: Preprint
page: 1411-1427
publication: Genetics
publication_identifier:
issn:
- '00166731'
publication_status: published
publisher: Genetics Society of America
quality_controlled: '1'
scopus_import: '1'
status: public
title: Replicability of introgression under linked, polygenic selection
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 210
year: '2018'
...
---
_id: '420'
abstract:
- lang: eng
text: We analyze the theoretical derivation of the beyond-mean-field equation of
state for two-dimensional gas of dilute, ultracold alkali-metal atoms in the Bardeen–Cooper–Schrieffer
(BCS) to Bose–Einstein condensate (BEC) crossover. We show that at zero temperature
our theory — considering Gaussian fluctuations on top of the mean-field equation
of state — is in very good agreement with experimental data. Subsequently, we
investigate the superfluid density at finite temperature and its renormalization
due to the proliferation of vortex–antivortex pairs. By doing so, we determine
the Berezinskii–Kosterlitz–Thouless (BKT) critical temperature — at which the
renormalized superfluid density jumps to zero — as a function of the inter-atomic
potential strength. We find that the Nelson–Kosterlitz criterion overestimates
the BKT temperature with respect to the renormalization group equations, this
effect being particularly relevant in the intermediate regime of the crossover.
article_processing_charge: No
author:
- first_name: Giacomo
full_name: Bighin, Giacomo
id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87
last_name: Bighin
orcid: 0000-0001-8823-9777
- first_name: Luca
full_name: Salasnich, Luca
last_name: Salasnich
citation:
ama: Bighin G, Salasnich L. Renormalization of the superfluid density in the two-dimensional
BCS-BEC crossover. International Journal of Modern Physics B. 2018;32(17):1840022.
doi:10.1142/S0217979218400222
apa: Bighin, G., & Salasnich, L. (2018). Renormalization of the superfluid density
in the two-dimensional BCS-BEC crossover. International Journal of Modern Physics
B. World Scientific Publishing. https://doi.org/10.1142/S0217979218400222
chicago: Bighin, Giacomo, and Luca Salasnich. “Renormalization of the Superfluid
Density in the Two-Dimensional BCS-BEC Crossover.” International Journal of
Modern Physics B. World Scientific Publishing, 2018. https://doi.org/10.1142/S0217979218400222.
ieee: G. Bighin and L. Salasnich, “Renormalization of the superfluid density in
the two-dimensional BCS-BEC crossover,” International Journal of Modern Physics
B, vol. 32, no. 17. World Scientific Publishing, p. 1840022, 2018.
ista: Bighin G, Salasnich L. 2018. Renormalization of the superfluid density in
the two-dimensional BCS-BEC crossover. International Journal of Modern Physics
B. 32(17), 1840022.
mla: Bighin, Giacomo, and Luca Salasnich. “Renormalization of the Superfluid Density
in the Two-Dimensional BCS-BEC Crossover.” International Journal of Modern
Physics B, vol. 32, no. 17, World Scientific Publishing, 2018, p. 1840022,
doi:10.1142/S0217979218400222.
short: G. Bighin, L. Salasnich, International Journal of Modern Physics B 32 (2018)
1840022.
date_created: 2018-12-11T11:46:22Z
date_published: 2018-07-10T00:00:00Z
date_updated: 2023-09-18T08:09:59Z
day: '10'
department:
- _id: MiLe
doi: 10.1142/S0217979218400222
external_id:
isi:
- '000438217300007'
intvolume: ' 32'
isi: 1
issue: '17'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1710.11171
month: '07'
oa: 1
oa_version: Preprint
page: '1840022'
publication: International Journal of Modern Physics B
publication_status: published
publisher: World Scientific Publishing
publist_id: '7402'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Renormalization of the superfluid density in the two-dimensional BCS-BEC crossover
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 32
year: '2018'
...
---
_id: '38'
abstract:
- lang: eng
text: 'Genomes of closely-related species or populations often display localized
regions of enhanced relative sequence divergence, termed genomic islands. It has
been proposed that these islands arise through selective sweeps and/or barriers
to gene flow. Here, we genetically dissect a genomic island that controls flower
color pattern differences between two subspecies of Antirrhinum majus, A.m.striatum
and A.m.pseudomajus, and relate it to clinal variation across a natural hybrid
zone. We show that selective sweeps likely raised relative divergence at two tightly-linked
MYB-like transcription factors, leading to distinct flower patterns in the two
subspecies. The two patterns provide alternate floral guides and create a strong
barrier to gene flow where populations come into contact. This barrier affects
the selected flower color genes and tightlylinked loci, but does not extend outside
of this domain, allowing gene flow to lower relative divergence for the rest of
the chromosome. Thus, both selective sweeps and barriers to gene flow play a role
in shaping genomic islands: sweeps cause elevation in relative divergence, while
heterogeneous gene flow flattens the surrounding "sea," making the island of divergence
stand out. By showing how selective sweeps establish alternative adaptive phenotypes
that lead to barriers to gene flow, our study sheds light on possible mechanisms
leading to reproductive isolation and speciation.'
acknowledgement: ' ERC Grant 201252 (to N.H.B.)'
article_processing_charge: No
author:
- first_name: Hugo
full_name: Tavares, Hugo
last_name: Tavares
- first_name: Annabel
full_name: Whitley, Annabel
last_name: Whitley
- first_name: David
full_name: Field, David
id: 419049E2-F248-11E8-B48F-1D18A9856A87
last_name: Field
orcid: 0000-0002-4014-8478
- first_name: Desmond
full_name: Bradley, Desmond
last_name: Bradley
- first_name: Matthew
full_name: Couchman, Matthew
last_name: Couchman
- first_name: Lucy
full_name: Copsey, Lucy
last_name: Copsey
- first_name: Joane
full_name: Elleouet, Joane
last_name: Elleouet
- first_name: Monique
full_name: Burrus, Monique
last_name: Burrus
- first_name: Christophe
full_name: Andalo, Christophe
last_name: Andalo
- first_name: Miaomiao
full_name: Li, Miaomiao
last_name: Li
- first_name: Qun
full_name: Li, Qun
last_name: Li
- first_name: Yongbiao
full_name: Xue, Yongbiao
last_name: Xue
- first_name: Alexandra B
full_name: Rebocho, Alexandra B
last_name: Rebocho
- 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: Enrico
full_name: Coen, Enrico
last_name: Coen
citation:
ama: Tavares H, Whitley A, Field D, et al. Selection and gene flow shape genomic
islands that control floral guides. PNAS. 2018;115(43):11006-11011. doi:10.1073/pnas.1801832115
apa: Tavares, H., Whitley, A., Field, D., Bradley, D., Couchman, M., Copsey, L.,
… Coen, E. (2018). Selection and gene flow shape genomic islands that control
floral guides. PNAS. National Academy of Sciences. https://doi.org/10.1073/pnas.1801832115
chicago: Tavares, Hugo, Annabel Whitley, David Field, Desmond Bradley, Matthew Couchman,
Lucy Copsey, Joane Elleouet, et al. “Selection and Gene Flow Shape Genomic Islands
That Control Floral Guides.” PNAS. National Academy of Sciences, 2018.
https://doi.org/10.1073/pnas.1801832115.
ieee: H. Tavares et al., “Selection and gene flow shape genomic islands that
control floral guides,” PNAS, vol. 115, no. 43. National Academy of Sciences,
pp. 11006–11011, 2018.
ista: Tavares H, Whitley A, Field D, Bradley D, Couchman M, Copsey L, Elleouet J,
Burrus M, Andalo C, Li M, Li Q, Xue Y, Rebocho AB, Barton NH, Coen E. 2018. Selection
and gene flow shape genomic islands that control floral guides. PNAS. 115(43),
11006–11011.
mla: Tavares, Hugo, et al. “Selection and Gene Flow Shape Genomic Islands That Control
Floral Guides.” PNAS, vol. 115, no. 43, National Academy of Sciences, 2018,
pp. 11006–11, doi:10.1073/pnas.1801832115.
short: H. Tavares, A. Whitley, D. Field, D. Bradley, M. Couchman, L. Copsey, J.
Elleouet, M. Burrus, C. Andalo, M. Li, Q. Li, Y. Xue, A.B. Rebocho, N.H. Barton,
E. Coen, PNAS 115 (2018) 11006–11011.
date_created: 2018-12-11T11:44:18Z
date_published: 2018-10-23T00:00:00Z
date_updated: 2023-09-18T08:36:49Z
day: '23'
ddc:
- '570'
department:
- _id: NiBa
doi: 10.1073/pnas.1801832115
external_id:
isi:
- '000448040500065'
pmid:
- '30297406'
file:
- access_level: open_access
checksum: d2305d0cc81dbbe4c1c677d64ad6f6d1
content_type: application/pdf
creator: dernst
date_created: 2018-12-17T08:44:03Z
date_updated: 2020-07-14T12:46:16Z
file_id: '5683'
file_name: 11006.full.pdf
file_size: 1911302
relation: main_file
file_date_updated: 2020-07-14T12:46:16Z
has_accepted_license: '1'
intvolume: ' 115'
isi: 1
issue: '43'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-nd/4.0/
month: '10'
oa: 1
oa_version: Published Version
page: 11006 - 11011
pmid: 1
publication: PNAS
publication_identifier:
issn:
- '00278424'
publication_status: published
publisher: National Academy of Sciences
publist_id: '8017'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Selection and gene flow shape genomic islands that control floral guides
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: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 115
year: '2018'
...
---
_id: '155'
abstract:
- lang: eng
text: There is currently significant interest in operating devices in the quantum
regime, where their behaviour cannot be explained through classical mechanics.
Quantum states, including entangled states, are fragile and easily disturbed by
excessive thermal noise. Here we address the question of whether it is possible
to create non-reciprocal devices that encourage the flow of thermal noise towards
or away from a particular quantum device in a network. Our work makes use of the
cascaded systems formalism to answer this question in the affirmative, showing
how a three-port device can be used as an effective thermal transistor, and illustrates
how this formalism maps onto an experimentally-realisable optomechanical system.
Our results pave the way to more resilient quantum devices and to the use of thermal
noise as a resource.
alternative_title:
- Proceedings of SPIE
article_number: 106721N
article_processing_charge: No
author:
- first_name: André
full_name: Xuereb, André
last_name: Xuereb
- first_name: Matteo
full_name: Aquilina, Matteo
last_name: Aquilina
- first_name: Shabir
full_name: Barzanjeh, Shabir
id: 2D25E1F6-F248-11E8-B48F-1D18A9856A87
last_name: Barzanjeh
orcid: 0000-0003-0415-1423
citation:
ama: 'Xuereb A, Aquilina M, Barzanjeh S. Routing thermal noise through quantum networks.
In: Andrews DL, Ostendorf A, Bain AJ, Nunzi JM, eds. Vol 10672. SPIE; 2018. doi:10.1117/12.2309928'
apa: 'Xuereb, A., Aquilina, M., & Barzanjeh, S. (2018). Routing thermal noise
through quantum networks. In D. L. Andrews, A. Ostendorf, A. J. Bain, & J.
M. Nunzi (Eds.) (Vol. 10672). Presented at the SPIE: The international society
for optical engineering, Strasbourg, France: SPIE. https://doi.org/10.1117/12.2309928'
chicago: Xuereb, André, Matteo Aquilina, and Shabir Barzanjeh. “Routing Thermal
Noise through Quantum Networks.” edited by D L Andrews, A Ostendorf, A J Bain,
and J M Nunzi, Vol. 10672. SPIE, 2018. https://doi.org/10.1117/12.2309928.
ieee: 'A. Xuereb, M. Aquilina, and S. Barzanjeh, “Routing thermal noise through
quantum networks,” presented at the SPIE: The international society for optical
engineering, Strasbourg, France, 2018, vol. 10672.'
ista: 'Xuereb A, Aquilina M, Barzanjeh S. 2018. Routing thermal noise through quantum
networks. SPIE: The international society for optical engineering, Proceedings
of SPIE, vol. 10672, 106721N.'
mla: Xuereb, André, et al. Routing Thermal Noise through Quantum Networks.
Edited by D L Andrews et al., vol. 10672, 106721N, SPIE, 2018, doi:10.1117/12.2309928.
short: A. Xuereb, M. Aquilina, S. Barzanjeh, in:, D.L. Andrews, A. Ostendorf, A.J.
Bain, J.M. Nunzi (Eds.), SPIE, 2018.
conference:
end_date: 2018-04-26
location: Strasbourg, France
name: 'SPIE: The international society for optical engineering'
start_date: 2018-04-22
date_created: 2018-12-11T11:44:55Z
date_published: 2018-05-04T00:00:00Z
date_updated: 2023-09-18T08:12:24Z
day: '04'
department:
- _id: JoFi
doi: 10.1117/12.2309928
editor:
- first_name: D L
full_name: Andrews, D L
last_name: Andrews
- first_name: A
full_name: Ostendorf, A
last_name: Ostendorf
- first_name: A J
full_name: Bain, A J
last_name: Bain
- first_name: J M
full_name: Nunzi, J M
last_name: Nunzi
external_id:
arxiv:
- '1806.01000'
isi:
- '000453298500019'
intvolume: ' 10672'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1806.01000
month: '05'
oa: 1
oa_version: Preprint
publication_status: published
publisher: SPIE
publist_id: '7766'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Routing thermal noise through quantum networks
type: conference
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 10672
year: '2018'
...