GLR-dependent calcium and electrical signals are not coupled to systemic, oxylipin-based wound-induced gene expression in Marchantia polymorpha.

Details

Serval ID
serval:BIB_6F0A667B6C29
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
GLR-dependent calcium and electrical signals are not coupled to systemic, oxylipin-based wound-induced gene expression in Marchantia polymorpha.
Journal
The New phytologist
Author(s)
Sanmartín M., Rojo E., Kurenda A., Larruy-García B., Zamarreño Á.M., Delgadillo M.O., Brito-Gutiérrez P., García-Mina J.M., Farmer E.E., Sánchez-Serrano J.J.
ISSN
1469-8137 (Electronic)
ISSN-L
0028-646X
Publication state
In Press
Peer-reviewed
Oui
Language
english
Notes
Publication types: Journal Article
Publication Status: aheadofprint
Abstract
In angiosperms, wound-derived signals travel through the vasculature to systemically activate defence responses throughout the plant. In Arabidopsis thaliana, activity of vasculature-specific Clade 3 glutamate receptor-like (GLR) channels is required for the transmission of electrical signals and cytosolic Ca <sup>2+</sup> ([Ca <sup>2+</sup> ] <sub>cyt</sub> ) waves from wounded leaves to distal tissues, triggering activation of oxylipin-dependent defences. Whether nonvascular plants mount systemic responses upon wounding remains unknown. To explore the evolution of systemic defence responses, we investigated electrical and calcium signalling in the nonvascular plant Marchantia polymorpha. We found that electrical signals and [Ca <sup>2+</sup> ] <sub>cyt</sub> waves are generated in response to mechanical wounding and propagated to nondamaged distal tissues in M. polymorpha. Functional analysis of MpGLR, the only GLR encoded in the genome of M. polymorpha, indicates that its activity is necessary for the systemic transmission of wound-induced electrical signals and [Ca <sup>2+</sup> ] <sub>cyt</sub> waves, similar to vascular plants. However, spread of these signals is neither coupled to systemic accumulation of oxylipins nor to a transcriptional defence response in the distal tissues of wounded M. polymorpha plants. Our results suggest that lack of vasculature prevents translocation of additional signalling factors that, together with electrical signals and [Ca <sup>2+</sup> ] <sub>cyt</sub> waves, contribute to systemic activation of defences in tracheophytes.
Keywords
Marchantia, calcium signalling, oxylipins, slow wave potentials, vasculature, wound
Pubmed
Open Access
Yes
Create date
13/05/2024 14:32
Last modification date
14/05/2024 8:11
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