Salmonella enterica Induces And Subverts The Plant Immune System

Infections with Salmonella enterica belong to the most prominent causes of food poisoning and infected fruits and vegetables represent important vectors for salmonellosis. Whereas it was shown that plants raise defense responses against Salmonella, these bacteria persist and proliferate in various p...

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Main Authors: Ana Victoria Garcia, Heribert eHirt
Format: Article
Language:English
Published: Frontiers Media S.A. 2014-04-01
Series:Frontiers in Microbiology
Subjects:
Online Access:http://journal.frontiersin.org/Journal/10.3389/fmicb.2014.00141/full
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author Ana Victoria Garcia
Heribert eHirt
author_facet Ana Victoria Garcia
Heribert eHirt
author_sort Ana Victoria Garcia
collection DOAJ
description Infections with Salmonella enterica belong to the most prominent causes of food poisoning and infected fruits and vegetables represent important vectors for salmonellosis. Whereas it was shown that plants raise defense responses against Salmonella, these bacteria persist and proliferate in various plant tissues. Recent reports shed light into the molecular interaction between plants and Salmonella, highlighting the defense pathways induced and the means used by the bacteria to escape the plant immune system and accomplish colonization. It was recently shown that plants detect Salmonella pathogen-associated molecular patterns (PAMPs), such as the flagellin peptide flg22, and activate hallmarks of the defense program known as PAMP-triggered immunity (PTI). Interestingly, certain Salmonella strains carry mutations in the flg22 domain triggering PTI, suggesting that a strategy of Salmonella is to escape plant detection by mutating PAMP motifs. Another strategy may rely on the type III secretion system (T3SS) as T3SS mutants were found to induce stronger plant defense responses than wild type bacteria. Although Salmonella effector delivery into plant cells has not been shown, expression of Salmonella effectors in plant tissues shows that these bacteria also possess powerful means to manipulate the plant immune system. Altogether, the data gathered suggest that Salmonella triggers PTI in plants and evolved strategies to avoid or subvert plant immunity.
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spelling doaj.art-d9ae415cd07e431da82ca6c086d6ba2a2022-12-22T02:31:23ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2014-04-01510.3389/fmicb.2014.0014183027Salmonella enterica Induces And Subverts The Plant Immune SystemAna Victoria Garcia0Heribert eHirt1INRAKing Abdullah University of Science and TechnologyInfections with Salmonella enterica belong to the most prominent causes of food poisoning and infected fruits and vegetables represent important vectors for salmonellosis. Whereas it was shown that plants raise defense responses against Salmonella, these bacteria persist and proliferate in various plant tissues. Recent reports shed light into the molecular interaction between plants and Salmonella, highlighting the defense pathways induced and the means used by the bacteria to escape the plant immune system and accomplish colonization. It was recently shown that plants detect Salmonella pathogen-associated molecular patterns (PAMPs), such as the flagellin peptide flg22, and activate hallmarks of the defense program known as PAMP-triggered immunity (PTI). Interestingly, certain Salmonella strains carry mutations in the flg22 domain triggering PTI, suggesting that a strategy of Salmonella is to escape plant detection by mutating PAMP motifs. Another strategy may rely on the type III secretion system (T3SS) as T3SS mutants were found to induce stronger plant defense responses than wild type bacteria. Although Salmonella effector delivery into plant cells has not been shown, expression of Salmonella effectors in plant tissues shows that these bacteria also possess powerful means to manipulate the plant immune system. Altogether, the data gathered suggest that Salmonella triggers PTI in plants and evolved strategies to avoid or subvert plant immunity.http://journal.frontiersin.org/Journal/10.3389/fmicb.2014.00141/fullFlagellinPlantseffectorPAMP-triggered immunityS. enterica
spellingShingle Ana Victoria Garcia
Heribert eHirt
Salmonella enterica Induces And Subverts The Plant Immune System
Frontiers in Microbiology
Flagellin
Plants
effector
PAMP-triggered immunity
S. enterica
title Salmonella enterica Induces And Subverts The Plant Immune System
title_full Salmonella enterica Induces And Subverts The Plant Immune System
title_fullStr Salmonella enterica Induces And Subverts The Plant Immune System
title_full_unstemmed Salmonella enterica Induces And Subverts The Plant Immune System
title_short Salmonella enterica Induces And Subverts The Plant Immune System
title_sort salmonella enterica induces and subverts the plant immune system
topic Flagellin
Plants
effector
PAMP-triggered immunity
S. enterica
url http://journal.frontiersin.org/Journal/10.3389/fmicb.2014.00141/full
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