Cellulose Synthesis and Cell Expansion Are Regulated by Different Mechanisms in Growing Arabidopsis Hypocotyls

Alexander Ivakov; Anna Flis; Federico Apelt; Maximillian Fuenfgeld; Ulrike Scherer; Mark Stitt; Friedrich Kragler; Kris Vissenberg; Staffan Persson; Dmitry Suslov

Journal article

Cellulose Synthesis and Cell Expansion Are Regulated by Different Mechanisms in Growing Arabidopsis Hypocotyls

Alexander Ivakov, Anna Flis, Federico Apelt, Maximillian Fuenfgeld, Ulrike Scherer, Mark Stitt, Friedrich Kragler, Kris Vissenberg, Staffan Persson, Dmitry Suslov

PLANT CELL | AMER SOC PLANT BIOLOGISTS | Published : 2017

DOI: 10.1105/tpc.16.00782

Abstract

Plant growth is sustained by two complementary processes: biomass biosynthesis and cell expansion. The cell wall is crucial to both as it forms the majority of biomass, while its extensibility limits cell expansion. Cellulose is a major component of the cell wall and cellulose synthesis is pivotal to plant cell growth, and its regulation is poorly understood. Using periodic diurnal variation in Arabidopsis thaliana hypocotyl growth, we found that cellulose synthesis and cell expansion can be uncoupled and are regulated by different mechanisms. We grew Arabidopsis plants in very short photoperiods and used a combination of extended nights, continuous light, sucrose feeding experiments, and ph..

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University of Melbourne Researchers

Staffan Persson Author

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Grants

Awarded by ARC Discovery grant

Awarded by ARC Future fellowship grant

Awarded by Hermon-Slade grant

Awarded by Saint Petersburg State University

Awarded by RFBR

Awarded by Research Foundation Flanders (FWO-Vlaanderen)

Funding Acknowledgements

A.I. was funded by the Max-Planck Gesellschaft and the University of Melbourne. A.F. was funded by the Max Planck Gesellschaft. S.P. was funded by the Max-Planck Gesellschaft and by a R@MAP professorship at the University of Melbourne and acknowledges funding from an ARC Discovery grant (DP150103495), an ARC Future fellowship grant (FT160100218), and a Hermon-Slade grant (Persson HSF 15/4). D.S. acknowledges Saint Petersburg State University for research grants 1.38.233.2014 and 1.42.1025.2016, the Research Park of Saint Petersburg State University Center for Molecular and Cell Technologies, and RFBR for Grant 15-04-04075. K.V. acknowledges the University of Antwerp and the Research Foundation Flanders (FWO-Vlaanderen) for Grants G.0656.13.N.10, 1.5.091.11.N.00, and G039815N. We acknowledge Ross Dennis for help with imaging.