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Position: Home > Articles > Research Advances on Xanthomonas Type Ⅲ Secretion System Effectors Chinese Journal of Tropical Agriculture 2014 (8) 77-82

黄单胞菌Ⅲ型分泌系统效应蛋白的研究进展

作  者:
易杰祥;景晓辉;吴伦英
单  位:
中国热带农业科学院环境与植物保护研究所海南省热带农业有害生物检测监控重点实验室;海南省热带作物资源可持续利用重点实验室;海南天然橡胶产业集团股份有限公司
关键词:
黄单胞菌;III型分泌系统;效应蛋白;Avr Bs3;类转录激活子
摘  要:
黄单胞菌借助保守的III型分泌系统,将多个效应蛋白注入植物细胞,克服宿主的防卫,利于黄单胞菌在植物体内发挥毒性功能。最近对III型效应蛋白致病机理开展了大量研究,结果发现具有酶功能的效应蛋白在黄单胞菌及其宿主间的相互作用中发挥非常重要的作用。此外,黄单胞菌存在一类独特的III型效应蛋白(Avr Bs3家族)。迄今为止,仅在黄单胞菌和雷尔氏菌(Ralstonia solanacearum)中发现Avr Bs3家族效应蛋白,Avr Bs3家族通过模拟转录激活子来操纵寄主植物易感基因的表达。
译  名:
Research Advances on Xanthomonas Type Ⅲ Secretion System Effectors
作  者:
YI Jiexiang;JING Xiaohui;WU Lunying;Hainan Province Tropical Crops Research Institute for Baoting;Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources,Hainan University;
关键词:
Xanthomonas;;type Ⅲ secretion system;;effector;;Avr Bs3;;transcriptional activators
摘  要:
Pathogenicity of Xanthomonas and most other Gram-negative phytopathogenic bacteria depends on a conserved type Ⅲ secretion(T3S) system which injects several different effector proteins into the plant cell. Extensive studies in the last years on the molecular mechanisms of type Ⅲ effector function revealed that effector proteins with enzymatic functions seem to play important roles in the interaction of Xanthomonas with its host plants. In addition, Xanthomonas express a unique class of type Ⅲ effectors to pursue another strategy. Effectors of the Avr Bs3 family, so far only identified in Xanthomonas spp. and Ralstonia solanacearum, mimic plant transcriptional activators and manipulate the plant transcriptome.

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