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Updated: Apr 4, 2026

Imaging Spatial Reorganization of a MAPK Signaling Pathway Using the Tobacco Transient Expression System
Published on: March 20, 2016
Plant MAPK cascades: Just rapid signaling modules?
Marie Boudsocq1, Agyemang Danquah1, Axel de Zélicourt1,2
1a Institute of Plant Sciences Paris-Saclay; Institut National de la Recherche Agronomique/Center National de la Recherche Scientifique/Université Paris Sud/Université Paris Diderot/Université d'Evry Val d'Essonne; Saclay Plant Sciences ; Orsay , France.
Abstract:
Abscisic acid (ABA) is a major phytohormone mediating important stress-related processes. We recently unveiled an ABA-activated MAPK signaling module constituted of MAP3K17/18-MKK3-MPK1/2/7/14. Unlike classical rapid MAPK activation, we showed that the activation of the new MAPK module is delayed and relies on the MAP3K protein synthesis. In this addendum, we discuss the role of this original and unexpected activation mechanism of MAPK cascades which suggests that MAPKs can regulate both early and long-term plant stress responses.
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