Titre
Wound- and mechanostimulated electrical signals control hormone responses.
Type
synthèse (review)
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
Farmer, E.E.
Auteure/Auteur
Gao, Y.Q.
Auteure/Auteur
Lenzoni, G.
Auteure/Auteur
Wolfender, J.L.
Auteure/Auteur
Wu, Q.
Auteure/Auteur
Liens vers les personnes
Liens vers les unités
ISSN
1469-8137
Statut éditorial
Publié
Date de publication
2020-08
Volume
227
Numéro
4
Première page
1037
Dernière page/numéro d’article
1050
Peer-reviewed
Oui
Langue
anglais
Notes
Publication types: Journal Article ; Review
Publication Status: ppublish
Publication Status: ppublish
Résumé
Plants in nature are constantly exposed to organisms that touch them and wound them. A highly conserved response to these stimuli is a rapid collapse of membrane potential (i.e. a decrease of electrical field strength across membranes). This can be coupled to the production and/or action of jasmonate or ethylene. Here, the various types of electrical signals in plants are discussed in the context of hormone responses. Genetic approaches are revealing genes involved in wound-induced electrical signalling. These include clade 3 GLUTAMATE RECEPTOR-LIKE (GLR) genes, Arabidopsis H <sup>+</sup> -ATPases (AHAs), RESPIRATORY BURST OXIDASE HOMOLOGUEs (RBOHs), and genes that determine cell wall properties. We briefly review touch- and wound-induced increases in cytosolic Ca <sup>2+</sup> concentrations and their temporal relationship to electrical activities. We then look at the questions that need addressing to link mechanostimulation and wound-induced electrical activity to hormone responses. Utilizing recently published results, we also present a hypothesis for wound-response leaf-to-leaf electrical signalling. This model is based on rapid electro-osmotic coupling between the phloem and xylem. The model suggests that the depolarization of membranes within the vascular matrix triggered by physical stimuli and/or chemical elicitors is linked to changes in phloem turgor and that this plays vital roles in leaf-to-leaf electrical signal propagation.
PID Serval
serval:BIB_1E88007DF7A5
PMID
Open Access
Oui
Date de création
2020-06-15T13:34:30.966Z
Date de création dans IRIS
2025-05-20T20:03:37Z