Dr RAHUL BHOSALE RAHUL.BHOSALE@NOTTINGHAM.AC.UK
Associate Professor
Dr RAHUL BHOSALE RAHUL.BHOSALE@NOTTINGHAM.AC.UK
Associate Professor
Veronique Boudolf
Fabiola Cuevas
Ran Lu
Thomas Eekhout
Zhubing Hu
Gert Van Isterdael
Georgina M. Lambert
Fan Xu
Moritz K. Nowack
Richard S. Smith
Ilse Vercauteren
Riet De Rycke
Veronique Storme
Tom Beeckman
John C. Larkin
Anna Kremer
Herman Höfte
David W. Galbraith
Robert P. Kumpf
Steven Maere
Lieven De Veylder
© 2018 ASPB. Somatic polyploidy caused by endoreplication is observed in arthropods, molluscs, and vertebrates but is especially prominent in higher plants, where it has been postulated to be essential for cell growth and fate maintenance. However, a comprehensive understanding of the physiological significance of plant endopolyploidy has remained elusive. Here, we modeled and experimentally verified a high-resolution DNA endoploidy map of the developing Arabidopsis thaliana root, revealing a remarkable spatiotemporal control of DNA endoploidy levels across tissues. Fitting of a simplified model to publicly available data sets profiling root gene expression under various environmental stress conditions suggested that this root endoploidy patterning may be stress-responsive. Furthermore, cellular and transcriptomic analyses revealed that inhibition of endoreplication onset alters the nuclear-to-cellular volume ratio and the expression of cell wall-modifying genes, in correlation with the appearance of cell structural changes. Our data indicate that endopolyploidy might serve to coordinate cell expansion with structural stability and that spatiotemporal endoreplication pattern changes may buffer for stress conditions, which may explain the widespread occurrence of the endocycle in plant species growing in extreme or variable environments.
Bhosale, R., Boudolf, V., Cuevas, F., Lu, R., Eekhout, T., Hu, Z., Van Isterdael, G., Lambert, G. M., Xu, F., Nowack, M. K., Smith, R. S., Vercauteren, I., De Rycke, R., Storme, V., Beeckman, T., Larkin, J. C., Kremer, A., Höfte, H., Galbraith, D. W., Kumpf, R. P., …De Veylder, L. (2018). A Spatiotemporal DNA Endoploidy Map of the Arabidopsis Root Reveals Roles for the Endocycle in Root Development and Stress Adaptation. Plant Cell, 30(10), 2330-2351. https://doi.org/10.1105/tpc.17.00983
Journal Article Type | Article |
---|---|
Acceptance Date | Aug 8, 2018 |
Online Publication Date | Aug 16, 2018 |
Publication Date | 2018-10 |
Deposit Date | Dec 7, 2018 |
Journal | The Plant Cell |
Print ISSN | 1040-4651 |
Electronic ISSN | 1532-298X |
Publisher | American Society of Plant Biologists |
Peer Reviewed | Peer Reviewed |
Volume | 30 |
Issue | 10 |
Pages | 2330-2351 |
DOI | https://doi.org/10.1105/tpc.17.00983 |
Keywords | Plant Science; Cell Biology |
Public URL | https://nottingham-repository.worktribe.com/output/1388612 |
Publisher URL | http://www.plantcell.org/content/30/10/2330 |
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