Virulence mechanisms and host specificity of gall-forming Pantoea agglomerans.

Abstract:

: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.

journal_name

Trends Microbiol

journal_title

Trends in microbiology

authors

Barash I,Manulis-Sasson S

doi

10.1016/j.tim.2007.10.009

subject

Has Abstract

pub_date

2007-12-01 00:00:00

pages

538-45

issue

12

eissn

0966-842X

issn

1878-4380

pii

S0966-842X(07)00202-8

journal_volume

15

pub_type

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