Skip to main content

Research Repository

Advanced Search

Organ-specific genetic interactions between paralogues of the PXY and ER receptor kinases enforce radial patterning in Arabidopsis vascular tissue

Wang, Ning; Bagdassarian, K.S.; Doherty, R.E.; Kroon, J.T.; Connor, K.A.; Wang, X.Y.; Wang, W.; Jermyn, I.H.; Turner, S.R.; Etchells, J.P.

Organ-specific genetic interactions between paralogues of the PXY and ER receptor kinases enforce radial patterning in Arabidopsis vascular tissue Thumbnail


Authors

Ning Wang

K.S. Bagdassarian

R.E. Doherty

K.A. Connor

X.Y. Wang

W. Wang

S.R. Turner



Abstract

In plants, cells do not migrate. Tissues are frequently arranged in concentric rings, thus expansion of inner layers is coordinated with cell division and/or expansion of cells in outer layers. In Arabidopsis stems, receptor kinases, PXY and ER, genetically interact to coordinate vascular proliferation and organisation via inter-tissue signalling. The contribution of PXY and ER paralogues to stem patterning is not known, nor is their function understood in hypocotyls, which undergo considerable radial expansion. Here we show that removal of all PXY and ER gene-family members results in profound cell division and organisation defects. In hypocotyls, these plants failed to transition to true radial growth. Gene expression analysis suggested that PXY and ER cross- and inter-family transcriptional regulation occurs, but it differs between stem and hypocotyl. Thus PXY and ER signalling interact to coordinate development in a distinct manner in different organs. We anticipate that such specialised local regulatory relationships, where tissue growth is controlled via signals moving across tissue layers, may coordinate tissue layer expansion throughout the plant body.

Citation

Wang, N., Bagdassarian, K., Doherty, R., Kroon, J., Connor, K., Wang, X., …Etchells, J. (2019). Organ-specific genetic interactions between paralogues of the PXY and ER receptor kinases enforce radial patterning in Arabidopsis vascular tissue. Development, 146(10), Article 177105. https://doi.org/10.1242/dev.177105

Journal Article Type Article
Acceptance Date Apr 23, 2019
Online Publication Date May 17, 2019
Publication Date May 31, 2019
Deposit Date May 2, 2019
Publicly Available Date Mar 29, 2024
Journal Development.
Print ISSN 0950-1991
Electronic ISSN 1477-9129
Publisher The Company of Biologists
Peer Reviewed Peer Reviewed
Volume 146
Issue 10
Article Number 177105
DOI https://doi.org/10.1242/dev.177105

Files






You might also like



Downloadable Citations