Local auxin metabolism regulates environmentinduced hypocotyl elongation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F16%3A33162173" target="_blank" >RIV/61989592:15310/16:33162173 - isvavai.cz</a>
Result on the web
<a href="http://www.nature.com/articles/nplants201625" target="_blank" >http://www.nature.com/articles/nplants201625</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/NPLANTS.2016.25" target="_blank" >10.1038/NPLANTS.2016.25</a>
Alternative languages
Result language
angličtina
Original language name
Local auxin metabolism regulates environmentinduced hypocotyl elongation
Original language description
A hallmark of plants is their adaptability of size and form in response to widely fluctuating environments. The metabolism and redistribution of the phytohormone auxin play pivotal roles in establishing active auxin gradients and resulting cellular differentiation. In Arabidopsis thaliana, cotyledons and leaves synthesize indole-3-acetic acid (IAA) from tryptophan through indole-3-pyruvic acid (3-IPA) in response to vegetational shade. This newly synthesized auxin moves to the hypocotyl where it induces elongation of hypocotyl cells. Here we show that loss of function of VAS2 (IAA-amido synthetase Gretchen Hagen 3 (GH3). 17) leads to increases in free IAA at the expense of IAA-Glu (IAA-glutamate) in the hypocotyl epidermis. This active IAA elicits shade- and high temperature-induced hypocotyl elongation largely independently of 3-IPA-mediated IAA biosynthesis in cotyledons. Our results reveal an unexpected capacity of local auxin metabolism to modulate the homeostasis and spatial distribution of free auxin in specialized organs such as hypocotyls in response to shade and high temperature.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
EF - Botany
OECD FORD branch
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Result continuities
Project
<a href="/en/project/LO1204" target="_blank" >LO1204: Sustainable development of research in the Centre of the Region Haná</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nature Plants
ISSN
2055-0278
e-ISSN
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Volume of the periodical
2
Issue of the periodical within the volume
4
Country of publishing house
GB - UNITED KINGDOM
Number of pages
9
Pages from-to
"16025-1"-"16025-9"
UT code for WoS article
000375397600003
EID of the result in the Scopus database
2-s2.0-84978056894