细菌毒素在植物细菌侵染性病害中的致病作用  

The Pathogenic Role of Bacterial Toxin in Plant Bacterial Infection

作　　者：赵根 郭璐[2] 叶建仁[3] 闵莉静[4] ZHAO Gen;GUO Lu;YE Jian-ren;MIN Li-jing(Huzhou Academy of Agricultural Sciences,Huzhou 313000,China;Huzhou First People＇s Hospital,Huzhou 313000,China;Key Laboratory of Pest Invasion and Control in Jiangsu Province,College of Forest Resources and Environmental Science,Nanjing Forestry University,Nanjing 210037,China;College of Life Science,Huzhou University,Huzhou 313000,China)

机构地区：[1]湖州市农业科学研究院,浙江湖州313000 [2]湖州市第一人民医院,浙江湖州313000 [3]南京林业大学森林资源与环境学院,江苏省有害生物入侵预防与控制重点实验室,江苏南京210037 [4]湖州师范学院生命科学学院,浙江湖州313000

出　　处：《黑龙江农业科学》2018年第9期151-155,共5页Heilongjiang Agricultural Sciences

基　　金：湖州市自然科学基金资助项目(2015GY08)

摘　　要：细菌毒素是病原细菌主要毒力因子之一,专指病原细菌产生的对植物具有毒害作用的次生代谢产物。它具有多糖、寡糖、蛋白、糖蛋白等多种不同结构,根据其对寄主植物的选择性可分为寄主专化型毒素和非寄主专化型毒素;根据其释放位点的不同,可分为外毒素和内毒素。细菌毒素在植物侵染性病害发生过程中可直接破坏寄主细胞,或通过操控寄主代谢的信号途径,或诱导植物类激素合成等方式破坏寄主防御体系。细菌毒素在开发微生物除草剂、诱导植物抗性、筛选抗性品种等领域具有潜在的应用。本文就细菌毒素的分类、致病机制及应用作以综述,以期对细菌毒素的系统性研究提供一定指导。Bacterial toxin is one of the main virulence effectors of pathogenic bacteria,it refers to the metabolites that have toxic effects on plants.It has many different structures such as polysaccharides,oligosaccharides,proteins,glycoproteins,etc.It can be divided into host specialized toxins and non-host specialized toxins according to its selectivity for host plants; it also can be divided into exotoxins and endotoxins due to the different release sites.Bacterial toxins can directly destroy the host defense system by destroying host cells,manipulating the signal pathway of host metabolism,or inducing plant plant hormone synthesis.There are many potential applications of bacterial toxins in the development of microbial herbicides,inducing plant resistance,and screening resistant varieties.This article briefly reviews the classification,pathogenic mechanism and application of bacterial toxins,so as to be instructive for the systematic study of bacterial toxin.

关 键 词：细菌毒素 毒力因子 植物病原细菌 

分 类 号：S432.42[农业科学—植物病理学]