Pull the fuzes:Processing protein precursors to generate apoplastic danger signals for triggering plant immunity  

作　　者：Daniele Del Corpo Daniele Coculo Marco Greco Giulia De Lorenzo Vincenzo Lionetti 

机构地区：[1]Department of Biology and Biotechnology“Charles Darwin,”Sapienza University of Rome,Rome,Italy

出　　处：《Plant Communications》2024年第8期113-136,共24页植物通讯（英文）

基　　金：supported by Sapienza University of Rome,grants RM120172 B78CFDF2,RM11916B7A142CF1,RM122181424F1F42,and RG12117 A898EABE0;by the European Union“NextGenerationEU”program“Project ECS 0000024 Rome Technopole”-CUP B83C22002820006,PNRR Missione 4 Componente 2 Investimento 1.5;by the Italian Ministry for Education,University and Research(MUR)with the project REACH-XY:CUP B93C22001920001.

摘　　要：The apoplast is one of the first cellular compartments outside the plasma membrane encountered by phytopathogenic microbes in the early stages of plant tissue invasion.Plants have developed sophisticated surveillance mechanisms to sense danger events at the cell surface and promptly activate immunity.However,a fine tuning of the activation of immune pathways is necessary to mount a robust and effective defense response.Several endogenous proteins and enzymes are synthesized as inactive precursors,and their post-translational processing has emerged as a critical mechanism for triggering alarms in the apoplast.In this review,we focus on the precursors of phytocytokines,cell wall remodeling enzymes,and proteases.The physiological events that convert inactive precursors into immunomodulatory active peptides or enzymes are described.This review also explores the functional synergies among phytocytokines,cell wall damage-associated molecular patterns,and remodeling,highlighting their roles in boosting extracellular immunity and reinforcing defenses against pests.

关 键 词：APOPLAST immunity activation post-translational processing cell wall proteases pro-peptides proenzymes phytocytokines cell-wall remodeling enzymes phytopathogenic microbes plant immunity 

分 类 号：Q94[生物学—植物学]