黄单胞菌毒性因子调控的研究进展  

Advantages in Regulation of Xanthomonas Virulence Factors

作　　者：唐庆华[1] 张世清[2] 牛晓庆[1] 朱辉[1] 余凤玉[1] 覃伟权[1] 

机构地区：[1]中国热带农业科学院椰子研究所,海南省热带油料作物生物学重点实验室,农业部热带油料作物科学观测试验站,海南文昌571339 [2]中国热带农业科学院热带生物技术研究所,海南海口571101

出　　处：《生物灾害科学》2012年第2期134-141,共8页Biological Disaster Science

基　　金：中央级公益性科研院所基本科研业务费专项(1630052012016);海南省自然科学基金(312041);公益性行业(农业)科研专项项目(200903026);海南省重点项目(090106)

摘　　要：黄单胞属植物病原细菌寄主非常广泛,能引起许多种重要经济作物发生病害。黄单胞菌在寄主组织内的侵染和繁殖取决于分泌的多糖、脂多糖、吸附素和III型分泌系统等毒性因子。细菌毒性因子的协调表达是通过群体感应途径、双组分系统和Clp、Zur、FhrR、HrpX和HpaR等转录后调控因子精细调控的。此外,毒力基因表达还受RNA结合蛋白RsmA转录后控制。在本综述中,我们对黄单胞菌控制分泌毒性因子的调控网络的研究进展进行了概括。Plant pathogenic bacteria of the genus Xanthomonas infect a wide range of host plants and are responsible for important crop plant diseases worldwide.Infection and multiplication of bacterial in the host tissue often rely on the virulence factors secreted including polysaccharides,LPS,adhesins,and type III secretion system.The coordinated expression of bacterial virulence factors is orchestrated by quorum-sensing pathways,multiple two-component systems and transcriptional regulators such as Clp,Zur,FhrR,HrpX and HpaR.In addition,virulence gene expression is post-transcriptionally controlled by the RNA-binding protein RsmA.In this review,we summarize the current advantages on regulatory networks which control secreted virulence factors from Xanthomonas species.

关 键 词：黄单胞菌 毒性因子 调控网络 群体效应 双组分系统 环鸟苷二磷酸信号 rna结合蛋白rsma 

分 类 号：S718.87[农业科学—林学]