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@article{1744940,
author = {Mazur, Ewa and Kulik, I. and Hajny, J. and Friml, J.},
article_location = {HOBOKEN},
article_number = {5},
doi = {http://dx.doi.org/10.1111/nph.16446},
keywords = {Arabidopsis thaliana; auxin; auxin canalization; cell polarity; PIN1; TIR1; AFB},
language = {eng},
issn = {0028-646X},
journal = {New Phytologist},
title = {Auxin canalization and vascular tissue formation by TIR1/AFB-mediated auxin signaling in Arabidopsis},
url = {https://nph.onlinelibrary.wiley.com/doi/pdfdirect/10.1111/nph.16446},
volume = {226},
year = {2020}
}
TY - JOUR
ID - 1744940
AU - Mazur, Ewa - Kulik, I. - Hajny, J. - Friml, J.
PY - 2020
TI - Auxin canalization and vascular tissue formation by TIR1/AFB-mediated auxin signaling in Arabidopsis
JF - New Phytologist
VL - 226
IS - 5
SP - 1375-1383
EP - 1375-1383
PB - Blackwell Science
SN - 0028646X
KW - Arabidopsis thaliana
KW - auxin
KW - auxin canalization
KW - cell polarity
KW - PIN1
KW - TIR1
KW - AFB
UR - https://nph.onlinelibrary.wiley.com/doi/pdfdirect/10.1111/nph.16446
N2 - Plant survival depends on vascular tissues, which originate in a self-organizing manner as strands of cells co-directionally transporting the plant hormone auxin. The latter phenomenon (also known as auxin canalization) is classically hypothesized to be regulated by auxin itself via the effect of this hormone on the polarity of its own intercellular transport. Correlative observations supported this concept, but molecular insights remain limited. In the current study, we established an experimental system based on the model Arabidopsis thaliana, which exhibits auxin transport channels and formation of vasculature strands in response to local auxin application. Our methodology permits the genetic analysis of auxin canalization under controllable experimental conditions. By utilizing this opportunity, we confirmed the dependence of auxin canalization on a PIN-dependent auxin transport and nuclear, TIR1/AFB-mediated auxin signaling. We also show that leaf venation and auxin-mediated PIN repolarization in the root require TIR1/AFB signaling. Further studies based on this experimental system are likely to yield better understanding of the mechanisms underlying auxin transport polarization in other developmental contexts.
ER -
MAZUR, Ewa, I. KULIK, J. HAJNY and J. FRIML. Auxin canalization and vascular tissue formation by TIR1/AFB-mediated auxin signaling in Arabidopsis. \textit{New Phytologist}. HOBOKEN: Blackwell Science, 2020, vol.~226, No~5, p.~1375-1383. ISSN~0028-646X. Available from: https://dx.doi.org/10.1111/nph.16446.
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