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Xyloglucan Remodeling Defines Auxin-Dependent Differential Tissue Expansion in Plants

Velasquez, Silvia Melina and Guo, Xiaoyuan and Gallemi, Marcal and Aryal, Bibek and Venhuizen, Peter and Barbez, Elke and Duenser, Kai Alexander and Darino, Martin and Pencik, Ales and Novak, Ondrej and Kalyna, Maria and Mouille, Gregory and Benkova, Eva and Bhalerao, Rishikesh P. and Mravec, Jozef and Kleine-Vehn, Jurgen (2021). Xyloglucan Remodeling Defines Auxin-Dependent Differential Tissue Expansion in Plants. International Journal of Molecular Sciences. 22 , 9222
[Research article]

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Abstract

Size control is a fundamental question in biology, showing incremental complexity in plants, whose cells possess a rigid cell wall. The phytohormone auxin is a vital growth regulator with central importance for differential growth control. Our results indicate that auxin-reliant growth programs affect the molecular complexity of xyloglucans, the major type of cell wall hemicellulose in eudicots. Auxin-dependent induction and repression of growth coincide with reduced and enhanced molecular complexity of xyloglucans, respectively. In agreement with a proposed function in growth control, genetic interference with xyloglucan side decorations distinctly modulates auxin-dependent differential growth rates. Our work proposes that auxin-dependent growth programs have a spatially defined effect on xyloglucan's molecular structure, which in turn affects cell wall mechanics and specifies differential, gravitropic hypocotyl growth.

Authors/Creators:Velasquez, Silvia Melina and Guo, Xiaoyuan and Gallemi, Marcal and Aryal, Bibek and Venhuizen, Peter and Barbez, Elke and Duenser, Kai Alexander and Darino, Martin and Pencik, Ales and Novak, Ondrej and Kalyna, Maria and Mouille, Gregory and Benkova, Eva and Bhalerao, Rishikesh P. and Mravec, Jozef and Kleine-Vehn, Jurgen
Title:Xyloglucan Remodeling Defines Auxin-Dependent Differential Tissue Expansion in Plants
Series Name/Journal:International Journal of Molecular Sciences
Year of publishing :2021
Volume:22
Article number:9222
Number of Pages:19
Publisher:MDPI
ISSN:1661-6596
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 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) > Biochemistry and Molecular Biology
Keywords:auxin, growth, cell wall, xyloglucans, hypocotyls, gravitropism
URN:NBN:urn:nbn:se:slu:epsilon-p-113710
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-113710
Additional ID:
Type of IDID
DOI10.3390/ijms22179222
Web of Science (WoS)000694347100001
ID Code:25508
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Forest Genetics and Plant Physiology
Deposited By: SLUpub Connector
Deposited On:27 Sep 2021 10:25
Metadata Last Modified:27 Sep 2021 10:31

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