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Xyloglucan remodeling defines auxin-dependent differential tissue expansion in plants
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SYSNO ASEP 0551633 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Xyloglucan remodeling defines auxin-dependent differential tissue expansion in plants Author(s) Velasquez, S. M. (AT)
Guo, X. (DK)
Gallemí, M. (AT)
Aryal, B. (CH)
Venhuizen, P. (AT)
Barbez, E. (BE)
Dünser, K. (AT)
Darino, M. (AT)
Pěnčík, Aleš (UEB-Q) ORCID, RID, SAI
Novák, Ondřej (UEB-Q) RID, ORCID, SAI
Kalyna, M. (AT)
Mouille, G. (FR)
Benková, E. (AT)
Bhalerao, R. (SE)
Mravec, J. (DE)
Kleine-Vehn, J. (DE)Number of authors 16 Article number 9222 Source Title International Journal of Molecular Sciences. - : MDPI
Roč. 22, č. 17 (2021)Number of pages 19 s. Language eng - English Country CH - Switzerland Keywords Auxin ; Cell wall ; Gravitropism ; Growth ; Hypocotyls ; Xyloglucans OECD category Cell biology R&D Projects EF16_019/0000827 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support UEB-Q - RVO:61389030 UT WOS 000694347100001 EID SCOPUS 85113442794 DOI 10.3390/ijms22179222 Annotation 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 hemi-cellulose 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. Workplace Institute of Experimental Botany Contact David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Year of Publishing 2022 Electronic address http://doi.org/10.3390/ijms22179222
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