---
_id: '1372'
abstract:
- lang: eng
text: Redirection of intercellular auxin fluxes via relocalization of the PIN-FORMED
3 (PIN3) and PIN7 auxin efflux carriers has been suggested to be necessary for
the root gravitropic response. Cytokinins have also been proposed to play a role
in controlling root gravitropism, but conclusive evidence is lacking. We present
a detailed study of the dynamics of root bending early after gravistimulation,
which revealed a delayed gravitropic response in transgenic lines with depleted
endogenous cytokinins (Pro35S:AtCKX) and cytokinin signaling mutants. Pro35S:AtCKX
lines, as well as a cytokinin receptor mutant ahk3, showed aberrations in the
auxin response distribution in columella cells consistent with defects in the
auxin transport machinery. Using in vivo real-time imaging of PIN3-GFP and PIN7-GFP
in AtCKX3 overexpression and ahk3 backgrounds, we observed wild-type-like relocalization
of PIN proteins in the columella early after gravistimulation, with gravity-induced
relocalization of PIN7 faster than that of PIN3. Nonetheless, the cellular distribution
of PIN3 and PIN7 and expression of PIN7 and the auxin influx carrier AUX1 was
affected in AtCKX overexpression lines. Based on the retained cytokinin sensitivity
in pin3 pin4 pin7 mutant, we propose the AUX1-mediated auxin transport rather
than columella-located PIN proteins as a target of endogenous cytokinins in the
control of root gravitropism.
acknowledgement: 'Funded by Ministry of Education, Youth and Sports Czech Republic.
Grant Numbers: CEITEC 2020, LQ1601, LO1204, LH14104 and The European Research Council.
Grant Number: ERC-2011-StG-20101109-PSDP and The Czech Science Foundation. Grant
Numbers: GAP501/11/1150, GA13-40637S, GP14-30004P'
author:
- first_name: Markéta
full_name: Pernisová, Markéta
last_name: Pernisová
- first_name: Tomas
full_name: Prat, Tomas
id: 3DA3BFEE-F248-11E8-B48F-1D18A9856A87
last_name: Prat
- first_name: Peter
full_name: Grones, Peter
id: 399876EC-F248-11E8-B48F-1D18A9856A87
last_name: Grones
- first_name: Danka
full_name: Haruštiaková, Danka
last_name: Haruštiaková
- first_name: Martina
full_name: Matonohova, Martina
last_name: Matonohova
- first_name: Lukáš
full_name: Spíchal, Lukáš
last_name: Spíchal
- first_name: Tomasz
full_name: Nodzyński, Tomasz
last_name: Nodzyński
- first_name: Jirí
full_name: Friml, Jirí
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
- first_name: Jan
full_name: Hejátko, Jan
last_name: Hejátko
citation:
ama: Pernisová M, Prat T, Grones P, et al. Cytokinins influence root gravitropism
via differential regulation of auxin transporter expression and localization in
Arabidopsis. New Phytologist. 2016;212(2):497-509. doi:10.1111/nph.14049
apa: Pernisová, M., Prat, T., Grones, P., Haruštiaková, D., Matonohova, M., Spíchal,
L., … Hejátko, J. (2016). Cytokinins influence root gravitropism via differential
regulation of auxin transporter expression and localization in Arabidopsis. New
Phytologist. Wiley-Blackwell. https://doi.org/10.1111/nph.14049
chicago: Pernisová, Markéta, Tomas Prat, Peter Grones, Danka Haruštiaková, Martina
Matonohova, Lukáš Spíchal, Tomasz Nodzyński, Jiří Friml, and Jan Hejátko. “Cytokinins
Influence Root Gravitropism via Differential Regulation of Auxin Transporter Expression
and Localization in Arabidopsis.” New Phytologist. Wiley-Blackwell, 2016.
https://doi.org/10.1111/nph.14049.
ieee: M. Pernisová et al., “Cytokinins influence root gravitropism via differential
regulation of auxin transporter expression and localization in Arabidopsis,” New
Phytologist, vol. 212, no. 2. Wiley-Blackwell, pp. 497–509, 2016.
ista: Pernisová M, Prat T, Grones P, Haruštiaková D, Matonohova M, Spíchal L, Nodzyński
T, Friml J, Hejátko J. 2016. Cytokinins influence root gravitropism via differential
regulation of auxin transporter expression and localization in Arabidopsis. New
Phytologist. 212(2), 497–509.
mla: Pernisová, Markéta, et al. “Cytokinins Influence Root Gravitropism via Differential
Regulation of Auxin Transporter Expression and Localization in Arabidopsis.” New
Phytologist, vol. 212, no. 2, Wiley-Blackwell, 2016, pp. 497–509, doi:10.1111/nph.14049.
short: M. Pernisová, T. Prat, P. Grones, D. Haruštiaková, M. Matonohova, L. Spíchal,
T. Nodzyński, J. Friml, J. Hejátko, New Phytologist 212 (2016) 497–509.
date_created: 2018-12-11T11:51:38Z
date_published: 2016-10-01T00:00:00Z
date_updated: 2021-01-12T06:50:13Z
day: '01'
ddc:
- '581'
department:
- _id: JiFr
doi: 10.1111/nph.14049
file:
- access_level: open_access
checksum: 27fd841ceaf0403559d7048ef51500f9
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:14:53Z
date_updated: 2020-07-14T12:44:47Z
file_id: '5108'
file_name: IST-2018-1006-v1+1_Pernisova_NewPhytol_2016_peer_review.pdf
file_size: 972763
relation: main_file
file_date_updated: 2020-07-14T12:44:47Z
has_accepted_license: '1'
intvolume: ' 212'
issue: '2'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Submitted Version
page: 497 - 509
publication: New Phytologist
publication_status: published
publisher: Wiley-Blackwell
publist_id: '5839'
pubrep_id: '1006'
quality_controlled: '1'
scopus_import: 1
status: public
title: Cytokinins influence root gravitropism via differential regulation of auxin
transporter expression and localization in Arabidopsis
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 212
year: '2016'
...