---
_id: '10268'
abstract:
- lang: eng
text: The analysis of dynamic cellular processes such as plant cytokinesis stands
and falls with live-cell time-lapse confocal imaging. Conventional approaches
to time-lapse imaging of cell division in Arabidopsis root tips are tedious and
have low throughput. Here, we describe a protocol for long-term time-lapse simultaneous
imaging of multiple root tips on a vertical-stage confocal microscope with automated
root tracking. We also provide modifications of the basic protocol to implement
this imaging method in the analysis of genetic, pharmacological or laser ablation
wounding-mediated experimental manipulations. Our method dramatically improves
the efficiency of cell division time-lapse imaging by increasing the throughput,
while reducing the person-hour requirements of such experiments.
acknowledged_ssus:
- _id: Bio
acknowledgement: We thank B. De Rybel for allowing M.G. to work on this manuscript
during a postdoc in his laboratory, and EMBO for supporting M.G. with a Long-Term
fellowship (ALTF 1005-2019) during this time. We acknowledge the service and support
by the Bioimaging Facility at IST Austria, and finally, we thank A. Mally for proofreading
and correcting the manuscript.
alternative_title:
- Methods in Molecular Biology
article_processing_charge: No
author:
- first_name: Lukas
full_name: Hörmayer, Lukas
id: 2EEE7A2A-F248-11E8-B48F-1D18A9856A87
last_name: Hörmayer
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
- first_name: Matous
full_name: Glanc, Matous
id: 1AE1EA24-02D0-11E9-9BAA-DAF4881429F2
last_name: Glanc
orcid: 0000-0003-0619-7783
citation:
ama: 'Hörmayer L, Friml J, Glanc M. Automated time-lapse imaging and manipulation
of cell divisions in Arabidopsis roots by vertical-stage confocal microscopy.
In: Plant Cell Division. Vol 2382. MIMB. Humana Press; 2021:105-114. doi:10.1007/978-1-0716-1744-1_6'
apa: Hörmayer, L., Friml, J., & Glanc, M. (2021). Automated time-lapse imaging
and manipulation of cell divisions in Arabidopsis roots by vertical-stage confocal
microscopy. In Plant Cell Division (Vol. 2382, pp. 105–114). Humana Press.
https://doi.org/10.1007/978-1-0716-1744-1_6
chicago: Hörmayer, Lukas, Jiří Friml, and Matous Glanc. “Automated Time-Lapse Imaging
and Manipulation of Cell Divisions in Arabidopsis Roots by Vertical-Stage Confocal
Microscopy.” In Plant Cell Division, 2382:105–14. MIMB. Humana Press, 2021.
https://doi.org/10.1007/978-1-0716-1744-1_6.
ieee: L. Hörmayer, J. Friml, and M. Glanc, “Automated time-lapse imaging and manipulation
of cell divisions in Arabidopsis roots by vertical-stage confocal microscopy,”
in Plant Cell Division, vol. 2382, Humana Press, 2021, pp. 105–114.
ista: 'Hörmayer L, Friml J, Glanc M. 2021.Automated time-lapse imaging and manipulation
of cell divisions in Arabidopsis roots by vertical-stage confocal microscopy.
In: Plant Cell Division. Methods in Molecular Biology, vol. 2382, 105–114.'
mla: Hörmayer, Lukas, et al. “Automated Time-Lapse Imaging and Manipulation of Cell
Divisions in Arabidopsis Roots by Vertical-Stage Confocal Microscopy.” Plant
Cell Division, vol. 2382, Humana Press, 2021, pp. 105–14, doi:10.1007/978-1-0716-1744-1_6.
short: L. Hörmayer, J. Friml, M. Glanc, in:, Plant Cell Division, Humana Press,
2021, pp. 105–114.
date_created: 2021-11-11T10:03:30Z
date_published: 2021-10-28T00:00:00Z
date_updated: 2022-06-03T06:47:06Z
day: '28'
department:
- _id: JiFr
doi: 10.1007/978-1-0716-1744-1_6
external_id:
pmid:
- '34705235'
intvolume: ' 2382'
language:
- iso: eng
month: '10'
oa_version: None
page: 105-114
pmid: 1
publication: Plant Cell Division
publication_identifier:
eisbn:
- 978-1-0716-1744-1
eissn:
- 1940-6029
isbn:
- 978-1-0716-1743-4
issn:
- 1064-3745
publication_status: published
publisher: Humana Press
quality_controlled: '1'
scopus_import: '1'
series_title: MIMB
status: public
title: Automated time-lapse imaging and manipulation of cell divisions in Arabidopsis
roots by vertical-stage confocal microscopy
type: book_chapter
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 2382
year: '2021'
...
---
_id: '8582'
abstract:
- lang: eng
text: "Cell and tissue polarization is fundamental for plant growth and morphogenesis.
The polar, cellular localization of Arabidopsis PIN‐FORMED (PIN) proteins is crucial
for their function in directional auxin transport. The clustering of PIN polar
cargoes within the plasma membrane has been proposed to be important for the maintenance
of their polar distribution. However, the more detailed features of PIN clusters
and the cellular requirements of cargo clustering remain unclear.\r\nHere, we
characterized PIN clusters in detail by means of multiple advanced microscopy
and quantification methods, such as 3D quantitative imaging or freeze‐fracture
replica labeling. The size and aggregation types of PIN clusters were determined
by electron microscopy at the nanometer level at different polar domains and at
different developmental stages, revealing a strong preference for clustering at
the polar domains.\r\nPharmacological and genetic studies revealed that PIN clusters
depend on phosphoinositol pathways, cytoskeletal structures and specific cell‐wall
components as well as connections between the cell wall and the plasma membrane.\r\nThis
study identifies the role of different cellular processes and structures in polar
cargo clustering and provides initial mechanistic insight into the maintenance
of polarity in plants and other systems."
acknowledged_ssus:
- _id: Bio
acknowledgement: We thank Dr Ingo Heilmann (Martin‐Luther‐University Halle‐Wittenberg)
for the XVE>>PIP5K1‐YFP line, Dr Brad Day (Michigan State University) for the ndr1‐1
mutant and the complementation lines, and Dr Patricia C. Zambryski (University of
California, Berkeley) for the 35S::P30‐GFP line, the Bioimaging team (IST Austria)
for assistance with imaging, group members for discussions, Martine De Cock for
help in preparing the manuscript and Nataliia Gnyliukh for critical reading and
revision of the manuscript. This project received funding from the European Research
Council (ERC) under the European Union's Horizon 2020 research and innovation program
(grant agreement No. 742985) and Comisión Nacional de Investigación Científica y
Tecnológica (Project CONICYT‐PAI 82130047). DvW received funding from the People
Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme
(FP7/2007‐2013) under REA grant agreement no. 291734.
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Hongjiang
full_name: Li, Hongjiang
id: 33CA54A6-F248-11E8-B48F-1D18A9856A87
last_name: Li
orcid: 0000-0001-5039-9660
- first_name: Daniel
full_name: von Wangenheim, Daniel
id: 49E91952-F248-11E8-B48F-1D18A9856A87
last_name: von Wangenheim
orcid: 0000-0002-6862-1247
- first_name: Xixi
full_name: Zhang, Xixi
id: 61A66458-47E9-11EA-85BA-8AEAAF14E49A
last_name: Zhang
orcid: 0000-0001-7048-4627
- first_name: Shutang
full_name: Tan, Shutang
id: 2DE75584-F248-11E8-B48F-1D18A9856A87
last_name: Tan
orcid: 0000-0002-0471-8285
- first_name: Nasser
full_name: Darwish-Miranda, Nasser
id: 39CD9926-F248-11E8-B48F-1D18A9856A87
last_name: Darwish-Miranda
orcid: 0000-0002-8821-8236
- first_name: Satoshi
full_name: Naramoto, Satoshi
last_name: Naramoto
- first_name: Krzysztof T
full_name: Wabnik, Krzysztof T
id: 4DE369A4-F248-11E8-B48F-1D18A9856A87
last_name: Wabnik
orcid: 0000-0001-7263-0560
- first_name: Riet
full_name: de Rycke, Riet
last_name: de Rycke
- first_name: Walter
full_name: Kaufmann, Walter
id: 3F99E422-F248-11E8-B48F-1D18A9856A87
last_name: Kaufmann
orcid: 0000-0001-9735-5315
- first_name: Daniel J
full_name: Gütl, Daniel J
id: 381929CE-F248-11E8-B48F-1D18A9856A87
last_name: Gütl
- first_name: Ricardo
full_name: Tejos, Ricardo
last_name: Tejos
- first_name: Peter
full_name: Grones, Peter
id: 399876EC-F248-11E8-B48F-1D18A9856A87
last_name: Grones
- first_name: Meiyu
full_name: Ke, Meiyu
last_name: Ke
- first_name: Xu
full_name: Chen, Xu
id: 4E5ADCAA-F248-11E8-B48F-1D18A9856A87
last_name: Chen
- first_name: Jan
full_name: Dettmer, Jan
last_name: Dettmer
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
citation:
ama: Li H, von Wangenheim D, Zhang X, et al. Cellular requirements for PIN polar
cargo clustering in Arabidopsis thaliana. New Phytologist. 2021;229(1):351-369.
doi:10.1111/nph.16887
apa: Li, H., von Wangenheim, D., Zhang, X., Tan, S., Darwish-Miranda, N., Naramoto,
S., … Friml, J. (2021). Cellular requirements for PIN polar cargo clustering in
Arabidopsis thaliana. New Phytologist. Wiley. https://doi.org/10.1111/nph.16887
chicago: Li, Hongjiang, Daniel von Wangenheim, Xixi Zhang, Shutang Tan, Nasser Darwish-Miranda,
Satoshi Naramoto, Krzysztof T Wabnik, et al. “Cellular Requirements for PIN Polar
Cargo Clustering in Arabidopsis Thaliana.” New Phytologist. Wiley, 2021.
https://doi.org/10.1111/nph.16887.
ieee: H. Li et al., “Cellular requirements for PIN polar cargo clustering
in Arabidopsis thaliana,” New Phytologist, vol. 229, no. 1. Wiley, pp.
351–369, 2021.
ista: Li H, von Wangenheim D, Zhang X, Tan S, Darwish-Miranda N, Naramoto S, Wabnik
KT, de Rycke R, Kaufmann W, Gütl DJ, Tejos R, Grones P, Ke M, Chen X, Dettmer
J, Friml J. 2021. Cellular requirements for PIN polar cargo clustering in Arabidopsis
thaliana. New Phytologist. 229(1), 351–369.
mla: Li, Hongjiang, et al. “Cellular Requirements for PIN Polar Cargo Clustering
in Arabidopsis Thaliana.” New Phytologist, vol. 229, no. 1, Wiley, 2021,
pp. 351–69, doi:10.1111/nph.16887.
short: H. Li, D. von Wangenheim, X. Zhang, S. Tan, N. Darwish-Miranda, S. Naramoto,
K.T. Wabnik, R. de Rycke, W. Kaufmann, D.J. Gütl, R. Tejos, P. Grones, M. Ke,
X. Chen, J. Dettmer, J. Friml, New Phytologist 229 (2021) 351–369.
date_created: 2020-09-28T08:59:28Z
date_published: 2021-01-01T00:00:00Z
date_updated: 2023-08-04T11:01:21Z
day: '01'
ddc:
- '580'
department:
- _id: JiFr
- _id: EM-Fac
- _id: Bio
- _id: EvBe
doi: 10.1111/nph.16887
ec_funded: 1
external_id:
isi:
- '000570187900001'
file:
- access_level: open_access
checksum: b45621607b4cab97eeb1605ab58e896e
content_type: application/pdf
creator: dernst
date_created: 2021-02-04T09:44:17Z
date_updated: 2021-02-04T09:44:17Z
file_id: '9084'
file_name: 2021_NewPhytologist_Li.pdf
file_size: 4061962
relation: main_file
success: 1
file_date_updated: 2021-02-04T09:44:17Z
has_accepted_license: '1'
intvolume: ' 229'
isi: 1
issue: '1'
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '01'
oa: 1
oa_version: Published Version
page: 351-369
project:
- _id: 261099A6-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '742985'
name: Tracing Evolution of Auxin Transport and Polarity in Plants
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: New Phytologist
publication_identifier:
eissn:
- '14698137'
issn:
- 0028646X
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: Cellular requirements for PIN polar cargo clustering in Arabidopsis thaliana
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: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 229
year: '2021'
...
---
_id: '8606'
abstract:
- lang: eng
text: The leaf is a crucial organ evolved with remarkable morphological diversity
to maximize plant photosynthesis. The leaf shape is a key trait that affects photosynthesis,
flowering rates, disease resistance, and yield. Although many genes regulating
leaf development have been identified in the past years, the precise regulatory
architecture underlying the generation of diverse leaf shapes remains to be elucidated.
We used cotton as a reference model to probe the genetic framework underlying
divergent leaf forms. Comparative transcriptome analysis revealed that the GhARF16‐1
and GhKNOX2‐1 genes might be potential regulators of leaf shape. We functionally
characterized the auxin‐responsive factor ARF16‐1 acting upstream of GhKNOX2‐1
to determine leaf morphology in cotton. The transcription of GhARF16‐1 was significantly
higher in lobed‐leaved cotton than in smooth‐leaved cotton. Furthermore, the overexpression
of GhARF16‐1 led to the upregulation of GhKNOX2‐1 and resulted in more and deeper
serrations in cotton leaves, similar to the leaf shape of cotton plants overexpressing
GhKNOX2‐1. We found that GhARF16‐1 specifically bound to the promoter of GhKNOX2‐1
to induce its expression. The heterologous expression of GhARF16‐1 and GhKNOX2‐1
in Arabidopsis led to lobed and curly leaves, and a genetic analysis revealed
that GhKNOX2‐1 is epistatic to GhARF16‐1 in Arabidopsis, suggesting that the GhARF16‐1
and GhKNOX2‐1 interaction paradigm also functions to regulate leaf shape in Arabidopsis.
To our knowledge, our results uncover a novel mechanism by which auxin, through
the key component ARF16‐1 and its downstream‐activated gene KNOX2‐1, determines
leaf morphology in eudicots.
acknowledgement: We are thankful to Professor Yuxian Zhu from Wuhan University for
his extremely valuable remarks and helpful comments on the manuscript. This work
was supported by the Shaanxi Natural Science Foundation (2019JQ‐062 and 2020JQ‐410),
Shaanxi Youth Entrusted Talents Program (20190205), China Postdoctoral Science Foundation
(2018M640947, 2020T130394), Shaanxi Postdoctoral Project (2018BSHYDZZ76), Natural
Science Basic Research Plan in Shaanxi Province of China (2018JZ3006), Fundamental
Research Funds for the Central Universities (GK201903064, GK201901004, GK202002005
and GK202001004), and State Key Laboratory of Cotton Biology Open Fund (CB2020A12).
article_processing_charge: No
article_type: original
author:
- first_name: P
full_name: He, P
last_name: He
- first_name: Yuzhou
full_name: Zhang, Yuzhou
id: 3B6137F2-F248-11E8-B48F-1D18A9856A87
last_name: Zhang
orcid: 0000-0003-2627-6956
- first_name: H
full_name: Li, H
last_name: Li
- first_name: X
full_name: Fu, X
last_name: Fu
- first_name: H
full_name: Shang, H
last_name: Shang
- first_name: C
full_name: Zou, C
last_name: Zou
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
- first_name: G
full_name: Xiao, G
last_name: Xiao
citation:
ama: He P, Zhang Y, Li H, et al. GhARF16-1 modulates leaf development by transcriptionally
regulating the GhKNOX2-1 gene in cotton. Plant Biotechnology Journal. 2021;19(3):548-562.
doi:10.1111/pbi.13484
apa: He, P., Zhang, Y., Li, H., Fu, X., Shang, H., Zou, C., … Xiao, G. (2021). GhARF16-1
modulates leaf development by transcriptionally regulating the GhKNOX2-1 gene
in cotton. Plant Biotechnology Journal. Wiley. https://doi.org/10.1111/pbi.13484
chicago: He, P, Yuzhou Zhang, H Li, X Fu, H Shang, C Zou, Jiří Friml, and G Xiao.
“GhARF16-1 Modulates Leaf Development by Transcriptionally Regulating the GhKNOX2-1
Gene in Cotton.” Plant Biotechnology Journal. Wiley, 2021. https://doi.org/10.1111/pbi.13484.
ieee: P. He et al., “GhARF16-1 modulates leaf development by transcriptionally
regulating the GhKNOX2-1 gene in cotton,” Plant Biotechnology Journal,
vol. 19, no. 3. Wiley, pp. 548–562, 2021.
ista: He P, Zhang Y, Li H, Fu X, Shang H, Zou C, Friml J, Xiao G. 2021. GhARF16-1
modulates leaf development by transcriptionally regulating the GhKNOX2-1 gene
in cotton. Plant Biotechnology Journal. 19(3), 548–562.
mla: He, P., et al. “GhARF16-1 Modulates Leaf Development by Transcriptionally Regulating
the GhKNOX2-1 Gene in Cotton.” Plant Biotechnology Journal, vol. 19, no.
3, Wiley, 2021, pp. 548–62, doi:10.1111/pbi.13484.
short: P. He, Y. Zhang, H. Li, X. Fu, H. Shang, C. Zou, J. Friml, G. Xiao, Plant
Biotechnology Journal 19 (2021) 548–562.
date_created: 2020-10-05T12:44:33Z
date_published: 2021-03-01T00:00:00Z
date_updated: 2023-08-04T11:03:10Z
day: '01'
ddc:
- '580'
department:
- _id: JiFr
doi: 10.1111/pbi.13484
external_id:
isi:
- '000577682300001'
pmid:
- '32981232'
file:
- access_level: open_access
checksum: 63845be37fb962586e0c7773f2355970
content_type: application/pdf
creator: dernst
date_created: 2021-04-12T12:29:07Z
date_updated: 2021-04-12T12:29:07Z
file_id: '9321'
file_name: 2021_PlantBiotechJournal_He.pdf
file_size: 15691871
relation: main_file
success: 1
file_date_updated: 2021-04-12T12:29:07Z
has_accepted_license: '1'
intvolume: ' 19'
isi: 1
issue: '3'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
page: 548-562
pmid: 1
publication: Plant Biotechnology Journal
publication_identifier:
issn:
- 1467-7644
- 1467-7652
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: GhARF16-1 modulates leaf development by transcriptionally regulating the GhKNOX2-1
gene in cotton
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: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 19
year: '2021'
...
---
_id: '8992'
abstract:
- lang: eng
text: The phytohormone auxin plays a central role in shaping plant growth and development.
With decades of genetic and biochemical studies, numerous core molecular components
and their networks, underlying auxin biosynthesis, transport, and signaling, have
been identified. Notably, protein phosphorylation, catalyzed by kinases and oppositely
hydrolyzed by phosphatases, has been emerging to be a crucial type of post-translational
modification, regulating physiological and developmental auxin output at all levels.
In this review, we comprehensively discuss earlier and recent advances in our
understanding of genetics, biochemistry, and cell biology of the kinases and phosphatases
participating in auxin action. We provide insights into the mechanisms by which
reversible protein phosphorylation defines developmental auxin responses, discuss
current challenges, and provide our perspectives on future directions involving
the integration of the control of protein phosphorylation into the molecular auxin
network.
acknowledgement: This work was supported by the European Union’s Horizon 2020 Program
(ERC grant agreement no. 742985 to J.F.). S.T. was funded by a European Molecular
Biology Organization (EMBO) long-term postdoctoral fellowship (ALTF 723-2015). C.L.
is supported by the Austrian Science Fund (FWF; P 31493).
article_processing_charge: No
article_type: original
author:
- first_name: Shutang
full_name: Tan, Shutang
id: 2DE75584-F248-11E8-B48F-1D18A9856A87
last_name: Tan
orcid: 0000-0002-0471-8285
- first_name: Christian
full_name: Luschnig, Christian
last_name: Luschnig
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
citation:
ama: 'Tan S, Luschnig C, Friml J. Pho-view of auxin: Reversible protein phosphorylation
in auxin biosynthesis, transport and signaling. Molecular Plant. 2021;14(1):151-165.
doi:10.1016/j.molp.2020.11.004'
apa: 'Tan, S., Luschnig, C., & Friml, J. (2021). Pho-view of auxin: Reversible
protein phosphorylation in auxin biosynthesis, transport and signaling. Molecular
Plant. Elsevier. https://doi.org/10.1016/j.molp.2020.11.004'
chicago: 'Tan, Shutang, Christian Luschnig, and Jiří Friml. “Pho-View of Auxin:
Reversible Protein Phosphorylation in Auxin Biosynthesis, Transport and Signaling.”
Molecular Plant. Elsevier, 2021. https://doi.org/10.1016/j.molp.2020.11.004.'
ieee: 'S. Tan, C. Luschnig, and J. Friml, “Pho-view of auxin: Reversible protein
phosphorylation in auxin biosynthesis, transport and signaling,” Molecular
Plant, vol. 14, no. 1. Elsevier, pp. 151–165, 2021.'
ista: 'Tan S, Luschnig C, Friml J. 2021. Pho-view of auxin: Reversible protein phosphorylation
in auxin biosynthesis, transport and signaling. Molecular Plant. 14(1), 151–165.'
mla: 'Tan, Shutang, et al. “Pho-View of Auxin: Reversible Protein Phosphorylation
in Auxin Biosynthesis, Transport and Signaling.” Molecular Plant, vol.
14, no. 1, Elsevier, 2021, pp. 151–65, doi:10.1016/j.molp.2020.11.004.'
short: S. Tan, C. Luschnig, J. Friml, Molecular Plant 14 (2021) 151–165.
date_created: 2021-01-03T23:01:23Z
date_published: 2021-01-04T00:00:00Z
date_updated: 2023-08-04T11:21:13Z
day: '04'
ddc:
- '580'
department:
- _id: JiFr
doi: 10.1016/j.molp.2020.11.004
ec_funded: 1
external_id:
isi:
- '000605359400014'
pmid:
- '33186755'
file:
- access_level: open_access
checksum: 917e60e57092f22e16beac70b1775ea6
content_type: application/pdf
creator: dernst
date_created: 2021-01-07T14:03:53Z
date_updated: 2021-01-07T14:03:53Z
file_id: '8995'
file_name: 2020_MolecularPlant_Tan.pdf
file_size: 871088
relation: main_file
success: 1
file_date_updated: 2021-01-07T14:03:53Z
has_accepted_license: '1'
intvolume: ' 14'
isi: 1
issue: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
page: 151-165
pmid: 1
project:
- _id: 261099A6-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '742985'
name: Tracing Evolution of Auxin Transport and Polarity in Plants
- _id: 256FEF10-B435-11E9-9278-68D0E5697425
grant_number: 723-2015
name: Long Term Fellowship
publication: Molecular Plant
publication_identifier:
eissn:
- '17529867'
issn:
- '16742052'
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Pho-view of auxin: Reversible protein phosphorylation in auxin biosynthesis,
transport and signaling'
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: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 14
year: '2021'
...
---
_id: '8993'
abstract:
- lang: eng
text: N-1-naphthylphthalamic acid (NPA) is a key inhibitor of directional (polar)
transport of the hormone auxin in plants. For decades, it has been a pivotal tool
in elucidating the unique polar auxin transport-based processes underlying plant
growth and development. Its exact mode of action has long been sought after and
is still being debated, with prevailing mechanistic schemes describing only indirect
connections between NPA and the main transporters responsible for directional
transport, namely PIN auxin exporters. Here we present data supporting a model
in which NPA associates with PINs in a more direct manner than hitherto postulated.
We show that NPA inhibits PIN activity in a heterologous oocyte system and that
expression of NPA-sensitive PINs in plant, yeast, and oocyte membranes leads to
specific saturable NPA binding. We thus propose that PINs are a bona fide NPA
target. This offers a straightforward molecular basis for NPA inhibition of PIN-dependent
auxin transport and a logical parsimonious explanation for the known physiological
effects of NPA on plant growth, as well as an alternative hypothesis to interpret
past and future results. We also introduce PIN dimerization and describe an effect
of NPA on this, suggesting that NPA binding could be exploited to gain insights
into structural aspects of PINs related to their transport mechanism.
acknowledgement: "This work was supported by Austrian Science Fund Grant FWF P21533-B20
(to L.A.); German Research Foundation Grant DFG HA3468/6-1 (to U.Z.H.); and European
Research Council Grant 742985 (to J.F.). We thank Herta Steinkellner and Alexandra
Castilho for N. benthamiana plants, Fabian Nagelreiter for statistical advice, Lanassa
Bassukas for help with [ɣ32P]-\r\nATP assays, and Josef Penninger for providing
access to mass spectrometry instruments at the Vienna BioCenter Core Facilities.
We thank PNAS reviewers for the many comments and suggestions that helped to improve
this manuscript."
article_number: e2020857118
article_processing_charge: No
article_type: original
author:
- first_name: Lindy
full_name: Abas, Lindy
last_name: Abas
- first_name: Martina
full_name: Kolb, Martina
last_name: Kolb
- first_name: Johannes
full_name: Stadlmann, Johannes
last_name: Stadlmann
- first_name: Dorina P.
full_name: Janacek, Dorina P.
last_name: Janacek
- first_name: Kristina
full_name: Lukic, Kristina
id: 2B04DB84-F248-11E8-B48F-1D18A9856A87
last_name: Lukic
orcid: 0000-0003-1581-881X
- first_name: Claus
full_name: Schwechheimer, Claus
last_name: Schwechheimer
- first_name: Leonid A
full_name: Sazanov, Leonid A
id: 338D39FE-F248-11E8-B48F-1D18A9856A87
last_name: Sazanov
orcid: 0000-0002-0977-7989
- first_name: Lukas
full_name: Mach, Lukas
last_name: Mach
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
- first_name: Ulrich Z.
full_name: Hammes, Ulrich Z.
last_name: Hammes
citation:
ama: Abas L, Kolb M, Stadlmann J, et al. Naphthylphthalamic acid associates with
and inhibits PIN auxin transporters. PNAS. 2021;118(1). doi:10.1073/pnas.2020857118
apa: Abas, L., Kolb, M., Stadlmann, J., Janacek, D. P., Lukic, K., Schwechheimer,
C., … Hammes, U. Z. (2021). Naphthylphthalamic acid associates with and inhibits
PIN auxin transporters. PNAS. National Academy of Sciences. https://doi.org/10.1073/pnas.2020857118
chicago: Abas, Lindy, Martina Kolb, Johannes Stadlmann, Dorina P. Janacek, Kristina
Lukic, Claus Schwechheimer, Leonid A Sazanov, Lukas Mach, Jiří Friml, and Ulrich
Z. Hammes. “Naphthylphthalamic Acid Associates with and Inhibits PIN Auxin Transporters.”
PNAS. National Academy of Sciences, 2021. https://doi.org/10.1073/pnas.2020857118.
ieee: L. Abas et al., “Naphthylphthalamic acid associates with and inhibits
PIN auxin transporters,” PNAS, vol. 118, no. 1. National Academy of Sciences,
2021.
ista: Abas L, Kolb M, Stadlmann J, Janacek DP, Lukic K, Schwechheimer C, Sazanov
LA, Mach L, Friml J, Hammes UZ. 2021. Naphthylphthalamic acid associates with
and inhibits PIN auxin transporters. PNAS. 118(1), e2020857118.
mla: Abas, Lindy, et al. “Naphthylphthalamic Acid Associates with and Inhibits PIN
Auxin Transporters.” PNAS, vol. 118, no. 1, e2020857118, National Academy
of Sciences, 2021, doi:10.1073/pnas.2020857118.
short: L. Abas, M. Kolb, J. Stadlmann, D.P. Janacek, K. Lukic, C. Schwechheimer,
L.A. Sazanov, L. Mach, J. Friml, U.Z. Hammes, PNAS 118 (2021).
date_created: 2021-01-03T23:01:23Z
date_published: 2021-01-05T00:00:00Z
date_updated: 2023-08-07T13:29:23Z
day: '05'
department:
- _id: JiFr
- _id: LeSa
doi: 10.1073/pnas.2020857118
ec_funded: 1
external_id:
isi:
- '000607270100073'
pmid:
- '33443187'
intvolume: ' 118'
isi: 1
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1073/pnas.2020857118
month: '01'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 261099A6-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '742985'
name: Tracing Evolution of Auxin Transport and Polarity in Plants
publication: PNAS
publication_identifier:
eissn:
- '10916490'
issn:
- '00278424'
publication_status: published
publisher: National Academy of Sciences
quality_controlled: '1'
related_material:
link:
- relation: erratum
url: https://doi.org/10.1073/pnas.2102232118
scopus_import: '1'
status: public
title: Naphthylphthalamic acid associates with and inhibits PIN auxin transporters
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 118
year: '2021'
...