Journal Article

Growth-inhibiting effects of the unconventional plant APYRASE 7 of Arabidopsis thaliana influences the LRX/RALF/FER growth regulatory module

Diet, Anouck, Wicker, Thomas, Université de Bâle = University of Basel = Basel Universität (Unibas), BioEcoAgro BIOPI-UPJV ; BioEcoAgro - UMR transfrontalière INRAe - UMRT1158 ; Université d'Artois (UA)-Université de Liège = University of Liège = Universiteit van Luik = Universität Lüttich (ULiège)-Université de Picardie Jules Verne (UPJV)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-JUNIA (JUNIA) ; Université catholique de Lille (UCL)-Université catholique de Lille (UCL)-Université d'Artois (UA)-Université de Liège = University of Liège = Universiteit van Luik = Universität Lüttich (ULiège)-Université de Picardie Jules Verne (UPJV)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-JUNIA (JUNIA) ; Université catholique de Lille (UCL)-Université catholique de Lille (UCL), Ringli, C

2024

Overview

Plant cell growth involves coordination of numerous processes and signaling cascades among the different cellular compartments to concomitantly enlarge the protoplast and the surrounding cell wall. The cell wall integrity-sensing process involves the extracellular LRX (LRR-Extensin) proteins that bind RALF (Rapid ALkalinization Factor) peptide hormones and, in vegetative tissues, interact with the transmembrane receptor kinase FERONIA (FER). This LRX/RALF/FER signaling module influences cell wall composition and regulates cell growth. The numerous proteins involved in or influenced by this module are beginning to be characterized. In a genetic screen, mutations in Apyrase 7 ( APY7 ) were identified to suppress growth defects observed in lrx1 and fer mutants. APY7 encodes a Golgi-localized NTP-diphosphohydrolase, but opposed to other apyrases of Arabidopsis, APY7 revealed to be a negative regulator of cell growth. APY7 modulates the growth-inhibiting effect of RALF1, influences the cell wall architecture and -composition, and alters the pH of the extracellular matrix, all of which affect cell growth. Together, this study reveals a function of APY7 in cell wall formation and cell growth that is connected to growth processes influenced by the LRX/RALF/FER signaling module.

• Publisher: CCSD,Public Library of Science,Public Library of Science (PLoS)
• Subject: Abiotic stress / Apyrase / Apyrase - genetics / Apyrase - metabolism / Arabidopsis / Arabidopsis Proteins - genetics / Arabidopsis Proteins - metabolism / Arabidopsis thaliana / Biology and Life Sciences / Carrier Proteins - metabolism / Cell growth / Cell receptors / Cell surface receptors / Cell walls / Extensin / Extracellular matrix / Genes / Genetic aspects / Genetic screening / Genomes / Genotype & phenotype / Golgi apparatus / Growth / Identification and classification / Kinases / Life Sciences / Mutation / Peptide hormones / Peptide Hormones - metabolism / Peptides / Phosphatase / Phosphotransferases / Phosphotransferases - metabolism / Protein Serine-Threonine Kinases / Proteins / Research and Analysis Methods