Dr Peter Etchells peter.etchells@durham.ac.uk
Associate Professor
Wood Formation in Trees Is Increased by Manipulating PXY-Regulated Cell Division
Etchells, J. Peter; Mishra, Laxmi S.; Kumar, Manoj; Campbell, Liam; Turner, Simon R.
Authors
Laxmi S. Mishra
Manoj Kumar
Liam Campbell
Simon R. Turner
Abstract
The woody tissue of trees is composed of xylem cells that arise from divisions of stem cells within the cambial meristem. The rate of xylem cell formation is dependent upon the rate of cell division within the cambium and is controlled by both genetic and environmental factors [1 and 2]. In the annual plant Arabidopsis, signaling between a peptide ligand CLE41 and a receptor kinase PXY controls cambial cell divisions [ 3, 4 and 5]; however, the pathway regulating secondary growth in trees has not been identified. Here, we show that an aspen receptor kinase PttPXY and its peptide ligand PttCLE41 are functional orthologs and act to control a multifunctional pathway that regulates both the rate of cambial cell division and woody tissue organization. Ectopic overexpression of PttPXY and PttCLE41 genes in hybrid aspen resulted in vascular tissue abnormalities and poor plant growth. In contrast, precise tissue-specific overexpression generated trees that exhibited a 2-fold increase in the rate of wood formation, were taller, and possessed larger leaves compared to the controls. Our results demonstrate that the PXY-CLE pathway has evolved to regulate secondary growth and manipulating this pathway can result in dramatically increased tree growth and productivity.
Citation
Etchells, J. P., Mishra, L. S., Kumar, M., Campbell, L., & Turner, S. R. (2015). Wood Formation in Trees Is Increased by Manipulating PXY-Regulated Cell Division. Current Biology, 25(8), 1050-1055. https://doi.org/10.1016/j.cub.2015.02.023
Journal Article Type | Article |
---|---|
Acceptance Date | Feb 5, 2015 |
Online Publication Date | Apr 9, 2015 |
Publication Date | Apr 20, 2015 |
Deposit Date | Jul 20, 2015 |
Publicly Available Date | Jul 27, 2015 |
Journal | Current Biology |
Print ISSN | 0960-9822 |
Publisher | Cell Press |
Peer Reviewed | Peer Reviewed |
Volume | 25 |
Issue | 8 |
Pages | 1050-1055 |
DOI | https://doi.org/10.1016/j.cub.2015.02.023 |
Related Public URLs | https://www.escholar.manchester.ac.uk/uk-ac-man-scw:258870 |
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This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). This article is available under the terms of the Creative Commons Attribution License (CC BY).
You may copy and distribute the article, create extracts, abstracts and new works from the article, alter and revise the article, text or data mine the article and otherwise reuse the article commercially (including reuse and/or resale of the article) without permission from Elsevier. You must give appropriate credit to the original work, together with a link to the formal publication through the relevant DOI and a link to the Creative Commons user license above. You must indicate if any changes are made but not in any way that suggests the licensor endorses you or your use of the work.
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