Xyloglucan remodeling defines auxin-dependent differential tissue expansion in plants

Velasquez SM, Guo X, Gallemi M, Aryal B, Venhuizen P, Barbez E, Dünser KA, Darino M, Pӗnčík A, Novák O, Kalyna M, Mouille G, Benková E, Bhalerao RP, Mravec J, Kleine-Vehn J. 2021. Xyloglucan remodeling defines auxin-dependent differential tissue expansion in plants. International Journal of Molecular Sciences. 22(17), 9222.

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Journal Article | Published | English

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Author
Velasquez, Silvia Melina; Guo, Xiaoyuan; Gallemi Rovira, MarcalIST Austria; Aryal, Bibek; Venhuizen, Peter; Barbez, Elke; Dünser, Kai Alexander; Darino, Martin; Pӗnčík, Aleš; Novák, Ondřej; Kalyna, Maria; Mouille, Gregory
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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.
Publishing Year
Date Published
2021-08-26
Journal Title
International Journal of Molecular Sciences
Acknowledgement
We are grateful to Paul Knox, Markus Pauly, Malcom O’Neill, and Ignacio Zarra for providing published material; the BOKU-VIBT Imaging Center for access and M. Debreczeny for expertise; J.I. Thaker and Georg Seifert for critical reading.
Volume
22
Issue
17
Article Number
9222
ISSN
eISSN
IST-REx-ID

Cite this

Velasquez SM, Guo X, Gallemi M, et al. Xyloglucan remodeling defines auxin-dependent differential tissue expansion in plants. International Journal of Molecular Sciences. 2021;22(17). doi:10.3390/ijms22179222
Velasquez, S. M., Guo, X., Gallemi, M., Aryal, B., Venhuizen, P., Barbez, E., … Kleine-Vehn, J. (2021). Xyloglucan remodeling defines auxin-dependent differential tissue expansion in plants. International Journal of Molecular Sciences. Molecular Diversity Preservation International. https://doi.org/10.3390/ijms22179222
Velasquez, Silvia Melina, Xiaoyuan Guo, Marçal Gallemi, Bibek Aryal, Peter Venhuizen, Elke Barbez, Kai Alexander Dünser, et al. “Xyloglucan Remodeling Defines Auxin-Dependent Differential Tissue Expansion in Plants.” International Journal of Molecular Sciences. Molecular Diversity Preservation International, 2021. https://doi.org/10.3390/ijms22179222.
S. M. Velasquez et al., “Xyloglucan remodeling defines auxin-dependent differential tissue expansion in plants,” International Journal of Molecular Sciences, vol. 22, no. 17. Molecular Diversity Preservation International, 2021.
Velasquez SM, Guo X, Gallemi M, Aryal B, Venhuizen P, Barbez E, Dünser KA, Darino M, Pӗnčík A, Novák O, Kalyna M, Mouille G, Benková E, Bhalerao RP, Mravec J, Kleine-Vehn J. 2021. Xyloglucan remodeling defines auxin-dependent differential tissue expansion in plants. International Journal of Molecular Sciences. 22(17), 9222.
Velasquez, Silvia Melina, et al. “Xyloglucan Remodeling Defines Auxin-Dependent Differential Tissue Expansion in Plants.” International Journal of Molecular Sciences, vol. 22, no. 17, 9222, Molecular Diversity Preservation International, 2021, doi:10.3390/ijms22179222.
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