| PERNISOVÁ, Markéta, Tomáš PRÁT, Peter GRONES, Danka HARUŠTIAKOVÁ, Martina MATONOHOVÁ, Lukáš SPÍCHAL, Tomasz NODZYNSKI, Jiří FRIML a Jan HEJÁTKO. Cytokinins influence root gravitropism via differential regulation of auxin transporter expression and localization in Arabidopsis. Online. New Phytologist. Hoboken: Wiley-Blackwell, 2016, roč. 212, č. 2, s. 497-509. ISSN 0028-646X. Dostupné z: https://dx.doi.org/10.1111/nph.14049. [citováno 2024-04-23] |
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@article{1348346,
author = {Pernisová, Markéta and Prát, Tomáš and Grones, Peter and Haruštiaková, Danka and Matonohová, Martina and Spíchal, Lukáš and Nodzynski, Tomasz and Friml, Jiří and Hejátko, Jan},
article_location = {Hoboken},
article_number = {2},
doi = {http://dx.doi.org/10.1111/nph.14049},
keywords = {Arabidopsis; AUX1; auxin; cytokinins; PIN-FORMED (PIN); root gravitropism},
language = {eng},
issn = {0028-646X},
journal = {New Phytologist},
title = {Cytokinins influence root gravitropism via differential regulation of auxin transporter expression and localization in Arabidopsis},
url = {http://onlinelibrary.wiley.com/doi/10.1111/nph.14049/abstract;jsessionid=06B6FBE103A10C93E72D3E2472F1E40A.f02t03},
volume = {212},
year = {2016}
}
TY - JOUR
ID - 1348346
AU - Pernisová, Markéta - Prát, Tomáš - Grones, Peter - Haruštiaková, Danka - Matonohová, Martina - Spíchal, Lukáš - Nodzynski, Tomasz - Friml, Jiří - Hejátko, Jan
PY - 2016
TI - Cytokinins influence root gravitropism via differential regulation of auxin transporter expression and localization in Arabidopsis
JF - New Phytologist
VL - 212
IS - 2
SP - 497-509
EP - 497-509
PB - Wiley-Blackwell
SN - 0028646X
KW - Arabidopsis
KW - AUX1
KW - auxin
KW - cytokinins
KW - PIN-FORMED (PIN)
KW - root gravitropism
UR - http://onlinelibrary.wiley.com/doi/10.1111/nph.14049/abstract;jsessionid=06B6FBE103A10C93E72D3E2472F1E40A.f02t03
L2 - http://onlinelibrary.wiley.com/doi/10.1111/nph.14049/abstract;jsessionid=06B6FBE103A10C93E72D3E2472F1E40A.f02t03
N2 - • Redirection of intercellular auxin fluxes via relocalization of the 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 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.
ER -
PERNISOVÁ, Markéta, Tomáš PRÁT, Peter GRONES, Danka HARUŠTIAKOVÁ, Martina MATONOHOVÁ, Lukáš SPÍCHAL, Tomasz NODZYNSKI, Jiří FRIML a Jan HEJÁTKO. Cytokinins influence root gravitropism via differential regulation of auxin transporter expression and localization in Arabidopsis. Online. \textit{New Phytologist}. Hoboken: Wiley-Blackwell, 2016, roč.~212, č.~2, s.~497-509. ISSN~0028-646X. Dostupné z: https://dx.doi.org/10.1111/nph.14049. [citováno 2024-04-23]
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