Pseudomonas syringae type III effector repertoires: last words in endless arguments.

Abstract:

:Many plant pathogens subvert host immunity by injecting compositionally diverse but functionally similar repertoires of cytoplasmic effector proteins. The bacterial pathogen Pseudomonas syringae is a model for exploring the functional structure of such repertoires. The pangenome of P. syringae encodes 57 families of effectors injected by the type III secretion system. Distribution of effector genes among phylogenetically diverse strains reveals a small set of core effectors targeting antimicrobial vesicle trafficking and a much larger set of variable effectors targeting kinase-based recognition processes. Complete disassembly of the 28-effector repertoire of a model strain and reassembly of a minimal functional repertoire reveals the importance of simultaneously attacking both processes. These observations, coupled with growing knowledge of effector targets in plants, support a model for coevolving molecular dialogs between effector repertoires and plant immune systems that emphasizes mutually-driven expansion of the components governing recognition.

journal_name

Trends Microbiol

journal_title

Trends in microbiology

authors

Lindeberg M,Cunnac S,Collmer A

doi

10.1016/j.tim.2012.01.003

subject

Has Abstract

pub_date

2012-04-01 00:00:00

pages

199-208

issue

4

eissn

0966-842X

issn

1878-4380

pii

S0966-842X(12)00004-2

journal_volume

20

pub_type

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