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Broadening the roles of UDP-glycosyltransferases in auxin homeostasis and plant development

Mateo-Bonmatí, Eduardo and Casanova-Sáez, Rubén and Simura, Jan and Ljung, Karin (2021). Broadening the roles of UDP-glycosyltransferases in auxin homeostasis and plant development. New Phytologist. 232 , 642-654
[Research article]

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Abstract

The levels of the important plant growth regulator indole-3-acetic acid (IAA) are tightly controlled within plant tissues to spatiotemporally orchestrate concentration gradients that drive plant growth and development. Metabolic inactivation of bioactive IAA is known to participate in the modulation of IAA maxima and minima. IAA can be irreversibly inactivated by oxidation and conjugation to aspartate and glutamate. Usually overlooked because of its reversible nature, the most abundant inactive IAA form is the IAA-glucose (IAA-glc) conjugate. Glycosylation of IAA in Arabidopsis thaliana is reported to be carried out by UDP-glycosyltransferase 84B1 (UGT84B1), while UGT74D1 has been implicated in the glycosylation of the irreversibly formed IAA catabolite oxIAA. Here we demonstrated that both UGT84B1 and UGT74D1 modulate IAA levels throughout plant development by dual IAA and oxIAA glycosylation. Moreover, we identified a novel UGT subfamily whose members redundantly mediate the glycosylation of oxIAA and modulate skotomorphogenic growth.

Authors/Creators:Mateo-Bonmatí, Eduardo and Casanova-Sáez, Rubén and Simura, Jan and Ljung, Karin
Title:Broadening the roles of UDP-glycosyltransferases in auxin homeostasis and plant development
Series Name/Journal:New Phytologist
Year of publishing :2021
Volume:232
Page range:642-654
Number of Pages:13
Publisher:WILEY
ISSN:0028-646X
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Noncommercial 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Botany
Keywords:Arabidopsis, auxin, indole-3-acetic acid (IAA), IAA-glucose, oxIAA-glucose, UDP-glycosyltransferases (UGT)
URN:NBN:urn:nbn:se:slu:epsilon-p-113927
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-113927
Additional ID:
Type of IDID
DOI10.1111/nph.17633
Web of Science (WoS)000683360100001
ID Code:25646
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Forest Genetics and Plant Physiology
Deposited By: SLUpub Connector
Deposited On:12 Oct 2021 14:25
Metadata Last Modified:12 Oct 2021 14:31

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