青枯菌三型分泌系统研究进展

Advances in studies of the type III secretion system in Ralstonia solanacearum—A review

摘要:

摘要:青枯菌(Ralstonia solanacearum)可导致多种重要经济作物毁灭性枯萎(bacterial wilt，又称青枯病)，是世界上分布最广、危害最严重的十大植物病原细菌之一。注射器状的三型分泌系统(Type III secretion system)是青枯菌的一个决定性致病因子，青枯菌利用T3SS向寄主细胞中注射大量效应蛋白(Type III effectors)来抑制寄 主的免疫反应，从而引起寄主感病。本文围绕近年来有关青枯菌T3SS 遗传特性、表达调控、效应蛋白功能等方面最新进展进行综述，为全面了解青枯菌致病机理和植物细菌病害的防治提供新思路。

Abstract:

Abstract:Bacterial wilt caused by Ralstonia solanacearum is one of the most devastating plant diseases worldwide．The syringe-like type III secretion system (T3SS) plays a crucial role in its pathogenicity．R.solanacearum uses the T3SS to inject effector proteins (Type III effectors) into the cytoplasm of host cells，causing diseases in susceptible plants or triggering the hypersensitive response in resistant plants． In this article we review recent advances in studies of R．solanacearum T3SS and highlight their unique features.