Guillaume Tena

TL;DR: An Arabidopsis thaliana leaf cell system based on the induction of early-defence gene transcription by flagellin, a highly conserved component of bacterial flagella that functions as a PAMP in plants and mammals is developed, suggesting that signalling events initiated by diverse pathogens converge into a conserved MAPK cascade.

TL;DR: The authors showed that H2O2 is a potent activator of mitogen-activated protein kinases (MAPKs) in Arabidopsis leaf cells using epitope tagging and a protoplast transient expression assay.

TL;DR: A simplified nomenclature for Arabidopsis MAPKs and MAPK kinases is proposed that might also serve as a basis for standard annotation of these gene families in all plants.

TL;DR: A previously unexpected MKK9–MPK3/MPK6 cascade promoting ethylene-insensitive 3 (EIN3)-mediated transcription in ethylene signalling is uncovered, suggesting a new paradigm for linking intertwined MAPK cascades to control quantitative responses and specificity in signalling networks.

TL;DR: New findings have revealed the complexity and redundancy of the signaling components, the antagonistic nature of distinct pathways, and the use of both positive and negative regulatory mechanisms in MAPK cascades.