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@article{1635181,
author = {Zwiewka, Marta and Bielach, Agnieszka and Tamizhselvan, Prashanth and Madhavan, Sharmila and Elrefaay Ryad, Eman and Tan, S.T. and Hrtyan, Mónika and Dobrev, P. and Vankova, R. and Friml, J. and Tognetti, Vanesa Beatriz},
article_location = {OXFORD},
article_number = {2},
doi = {http://dx.doi.org/10.1093/pcp/pcz001},
keywords = {Adaptation; Auxin transport; Cytoskeleton; Hydrogen peroxide; Root apical meristem; Trafficking},
language = {eng},
issn = {0032-0781},
journal = {Plant and Cell Physiology},
title = {Root Adaptation to H2O2-Induced Oxidative Stress by ARF-GEF BEN1-and Cytoskeleton-Mediated PIN2 Trafficking},
url = {http://dx.doi.org/10.1093/pcp/pcz001},
volume = {60},
year = {2019}
}
TY - JOUR
ID - 1635181
AU - Zwiewka, Marta - Bielach, Agnieszka - Tamizhselvan, Prashanth - Madhavan, Sharmila - Elrefaay Ryad, Eman - Tan, S.T. - Hrtyan, Mónika - Dobrev, P. - Vankova, R. - Friml, J. - Tognetti, Vanesa Beatriz
PY - 2019
TI - Root Adaptation to H2O2-Induced Oxidative Stress by ARF-GEF BEN1-and Cytoskeleton-Mediated PIN2 Trafficking
JF - Plant and Cell Physiology
VL - 60
IS - 2
SP - 255-273
EP - 255-273
PB - OXFORD UNIV PRESS
SN - 00320781
KW - Adaptation
KW - Auxin transport
KW - Cytoskeleton
KW - Hydrogen peroxide
KW - Root apical meristem
KW - Trafficking
UR - http://dx.doi.org/10.1093/pcp/pcz001
L2 - http://dx.doi.org/10.1093/pcp/pcz001
N2 - Abiotic stress poses constant challenges for plant survival and is a serious problem for global agricultural productivity. On a molecular level, stress conditions result in elevation of reactive oxygen species (ROS) production causing oxidative stress associated with oxidation of proteins and nucleic acids as well as impairment of membrane functions. Adaptation of root growth to ROS accumulation is facilitated through modification of auxin and cytokinin hormone homeostasis. Here, we report that in Arabidopsis root meristem, ROS-induced changes of auxin levels correspond to decreased abundance of PIN auxin efflux carriers at the plasma membrane (PM). Specifically, increase in H2O2 levels affects PIN2 endocytic recycling. We show that the PIN2 intracellular trafficking during adaptation to oxidative stress requires the function of the ADP-ribosylation factor (ARF)-guanine-nucleotide exchange factor (GEF) BEN1, an actin-associated regulator of the trafficking from the PM to early endosomes and, presumably, indirectly, trafficking to the vacuoles. We propose that H2O2 levels affect the actin dynamics thus modulating ARF-GEF-dependent trafficking of PIN2. This mechanism provides a way how root growth acclimates to stress and adapts to a changing environment.
ER -
ZWIEWKA, Marta, Agnieszka BIELACH, Prashanth TAMIZHSELVAN, Sharmila MADHAVAN, Eman ELREFAAY RYAD, S.T. TAN, Mónika HRTYAN, P. DOBREV, R. VANKOVA, J. FRIML and Vanesa Beatriz TOGNETTI. Root Adaptation to H2O2-Induced Oxidative Stress by ARF-GEF BEN1-and Cytoskeleton-Mediated PIN2 Trafficking. \textit{Plant and Cell Physiology}. OXFORD: OXFORD UNIV PRESS, 2019, vol.~60, No~2, p.~255-273. ISSN~0032-0781. Available from: https://dx.doi.org/10.1093/pcp/pcz001.
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