Dialogues of root-colonizing biocontrol pseudomonads

Détails

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Etat: Public
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ID Serval
serval:BIB_4CAA1824972E
Type
Article: article d'un périodique ou d'un magazine.
Sous-type
Synthèse (review): revue aussi complète que possible des connaissances sur un sujet, rédigée à partir de l'analyse exhaustive des travaux publiés.
Collection
Publications
Institution
Titre
Dialogues of root-colonizing biocontrol pseudomonads
Périodique
European Journal of Plant Pathology
Auteur(s)
Dubuis C., Keel C., Haas D.
ISSN
0929-1873
Statut éditorial
Publié
Date de publication
2007
Peer-reviewed
Oui
Volume
119
Numéro
3
Pages
311-328
Langue
anglais
Résumé
Among biocontrol agents that are able to suppress root diseases caused by fungal pathogens, root-colonizing fluorescent pseudomonads have received particular attention because many strains of these bacteria trigger systemic resistance in host plants and produce antifungal compounds and exoenzymes. In general, the expression of these plant-beneficial traits is regulated by autoinduction mechanisms and may occur on roots when the pseudomonads form microcolonies. Three major classes of antibiotic compounds reviewed here in detail (2,4-diacetylphloroglucinol, pyoluteorin and various phenazine compounds) are all produced under cell population density-dependent autoinduction control acting at transcriptional and post-transcriptional levels. This regulation can either be reinforced or attenuated by a variety of chemical signals emanating from the pseudomonads themselves, other microorganisms or root exudates. Signals stimulating biocontrol factor expression via the Gac/Rsm signal transduction pathway in the biocontrol strain Pseudomonas fluorescens CHA0 are synthesized by many different plant-associated bacteria, warranting a more detailed investigation in the future.
Mots-clé
antibiotic compounds, biocontrol, GacS/GacA, quorum sensing, Pseudomonas, rhizosphere
Web of science
Open Access
Oui
Création de la notice
17/02/2008 12:22
Dernière modification de la notice
01/10/2019 6:17
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