Virulence mechanisms and host specificity of gall-forming Pantoea agglomerans

被引：52

作者：

Barash, Isaac ^{[1
]}

Manulis-Sasson, Shulamit ^{[2
]}

机构：

[1] Tel Aviv Univ, Fac Life Sci, Dept Plant Sci, IL-69978 Tel Aviv, Israel

[2] Agr Res Org, Volcani Ctr, Dept Plant Pathol & Weed Res, IL-50250 Bet Dagan, Israel

来源：

TRENDS IN MICROBIOLOGY | 2007年 / 15卷 / 12期

基金：

以色列科学基金会;

关键词：

D O I：

10.1016/j.tim.2007.10.009

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Pantoea agglomerans has been transformed from a commensal bacterium associated with many plants into a host-specific gall-forming pathogen by acquiring a plasmid-borne pathogenicity island. This pathogenicity island harbors the hrp/hrc gene cluster, in addition to genes encoding type III effector proteins, biosynthesis of the phytohormones indole-3-acetic acid and cytokinin, multiple diverse insertion sequences and pseudogenes. This review describes a unique model for understanding the emergence of new pathogens or new pathogenic variants, offering an insight into the function of type III effectors in host specificity and the evolution of a pathogen into pathovars. It also addresses the primary role of type III effectors in gall initiation as compared with a secondary role of phytohormones secreted by the pathogen.

引用

页码：538 / 545

页数：8

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