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Elicitation and suppression of microbe‐associated molecular pattern‐triggered immunity in plant–microbe interactions

Elicitation and suppression of microbe‐associated molecular pattern‐triggered immunity in... Summary Recent studies have uncovered fascinating molecular mechanisms underlying plant–microbe interactions that coevolved dynamically. As in animals, the primary plant innate immunity is immediately triggered by the detection of common pathogen‐ or microbe‐associated molecular patterns (PAMPs/MAMPs). Different MAMPs are often perceived by distinct cell‐surface pattern‐recognition receptors (PRRs) and activate convergent intracellular signalling pathways in plant cells for broad‐spectrum immunity. Successful pathogens, however, have evolved multiple virulence factors to suppress MAMP‐triggered immunity. Specifically, diverse pathogenic bacteria have employed the type III secretion system to deliver a repertoire of virulence effector proteins to interfere with host immunity and promote pathogenesis. Plants challenged by pathogens have evolved the secondary plant innate immunity. In particular, some plants possess the specific intracellular disease resistance (R) proteins to effectively counteract virulence effectors of pathogens for effector‐triggered immunity. This potent but cultivar‐specific effector‐triggered immunity occurs rapidly with localized programmed cell death/hypersensitive response to limit pathogen proliferation and disease development. Remarkably, bacteria have further acquired virulence effectors to block effector‐triggered immunity. This review covers the latest findings in the dynamics of MAMP‐triggered immunity and its interception by virulence factors of pathogenic bacteria. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Cellular Microbiology Wiley

Elicitation and suppression of microbe‐associated molecular pattern‐triggered immunity in plant–microbe interactions

Cellular Microbiology , Volume 9 (6) – Jun 1, 2007

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References (112)

Publisher
Wiley
Copyright
Copyright © 2007 Wiley Subscription Services, Inc., A Wiley Company
ISSN
1462-5814
eISSN
1462-5822
DOI
10.1111/j.1462-5822.2007.00944.x
pmid
17451411
Publisher site
See Article on Publisher Site

Abstract

Summary Recent studies have uncovered fascinating molecular mechanisms underlying plant–microbe interactions that coevolved dynamically. As in animals, the primary plant innate immunity is immediately triggered by the detection of common pathogen‐ or microbe‐associated molecular patterns (PAMPs/MAMPs). Different MAMPs are often perceived by distinct cell‐surface pattern‐recognition receptors (PRRs) and activate convergent intracellular signalling pathways in plant cells for broad‐spectrum immunity. Successful pathogens, however, have evolved multiple virulence factors to suppress MAMP‐triggered immunity. Specifically, diverse pathogenic bacteria have employed the type III secretion system to deliver a repertoire of virulence effector proteins to interfere with host immunity and promote pathogenesis. Plants challenged by pathogens have evolved the secondary plant innate immunity. In particular, some plants possess the specific intracellular disease resistance (R) proteins to effectively counteract virulence effectors of pathogens for effector‐triggered immunity. This potent but cultivar‐specific effector‐triggered immunity occurs rapidly with localized programmed cell death/hypersensitive response to limit pathogen proliferation and disease development. Remarkably, bacteria have further acquired virulence effectors to block effector‐triggered immunity. This review covers the latest findings in the dynamics of MAMP‐triggered immunity and its interception by virulence factors of pathogenic bacteria.

Journal

Cellular MicrobiologyWiley

Published: Jun 1, 2007

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