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Eudicot primary cell wall glucomannan is related in synthesis, structure and function to xyloglucan
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Yu, Li, Yoshimi, Yoshihisa, Cresswell, Rosalie, Wightman, Raymond, Lyczakowski, Jan J., Wilson, Louis F. L., Ishida, Konan, Stott, Katherine, Yu, Xiaolan, Charalambous, Stephan, Wurman-Rodrich, Joel, Terrett, Oliver M., Brown, Steven P., Dupree, Ray, Temple, Henry, Krogh, Kristian B. R. M. and Dupree, Paul (2022) Eudicot primary cell wall glucomannan is related in synthesis, structure and function to xyloglucan. The Plant Cell, 34 (11). pp. 4600-4622. doi:10.1093/plcell/koac238 ISSN 1532-298X.
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Official URL: https://doi.org/10.1093/plcell/koac238
Abstract
Hemicelluose polysaccharides influence assembly and properties of the plant primary cell wall (PCW), perhaps by interacting with cellulose to affect the deposition and bundling of cellulose fibrils. However, the functional differences between plant cell wall hemicelluloses such as glucomannan, xylan and xyloglucan (XyG) remain unclear. As the most abundant hemicellulose, XyG is considered important in eudicot PCWs, but plants devoid of XyG show relatively mild phenotypes. We report here that a patterned β-galactoglucomannan (β-GGM) is widespread in eudicot PCWs and shows remarkable similarities to XyG. The sugar linkages forming the backbone and side chains of β-GGM are analogous to those that make up XyG, and moreover, these linkages are formed by glycosyltransferases from the same CAZy families. Solid-state nuclear magnetic resonance indicated that β-GGM shows low mobility in the cell wall, consistent with interaction with cellulose. Although Arabidopsis β-GGM synthesis mutants show no obvious growth defects, genetic crosses between β-GGM and XyG mutants produce exacerbated phenotypes compared to XyG mutants. These findings demonstrate a related role of these two similar but distinct classes of hemicelluloses in PCWs. This work opens avenues to study the roles of β-GGM and XyG in PCWs.
Item Type: | Journal Article | |||||||||||||||||||||||||||
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Subjects: | Q Science > QH Natural history Q Science > QK Botany |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||||||||||||||
SWORD Depositor: | Library Publications Router | |||||||||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Plant cell walls , Hemicellulose , Cytology | |||||||||||||||||||||||||||
Journal or Publication Title: | The Plant Cell | |||||||||||||||||||||||||||
Publisher: | Oxford University Press (OUP) | |||||||||||||||||||||||||||
ISSN: | 1532-298X | |||||||||||||||||||||||||||
Official Date: | November 2022 | |||||||||||||||||||||||||||
Dates: |
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Volume: | 34 | |||||||||||||||||||||||||||
Number: | 11 | |||||||||||||||||||||||||||
Page Range: | pp. 4600-4622 | |||||||||||||||||||||||||||
DOI: | 10.1093/plcell/koac238 | |||||||||||||||||||||||||||
Status: | Peer Reviewed | |||||||||||||||||||||||||||
Publication Status: | Published | |||||||||||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||||||||||||||
Date of first compliant deposit: | 6 September 2022 | |||||||||||||||||||||||||||
Date of first compliant Open Access: | 6 September 2022 | |||||||||||||||||||||||||||
RIOXX Funder/Project Grant: |
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