Friends or foes in the rhizosphere: traits of fluorescent Pseudomonas that hinder Azospirillum brasilense growth and root colonization

dc.creatorMaroniche, Guillermo Andrés
dc.creatorDiaz, Pablo Rafael
dc.creatorBorrajo, María Paula
dc.creatorValverde, Claudio Fabián
dc.creatorCreus, Cecilia Mónica
dc.date2018-10
dc.date.accessioned2023-08-31T00:45:44Z
dc.date.available2023-08-31T00:45:44Z
dc.identifierhttp://hdl.handle.net/11336/176130
dc.identifierMaroniche, Guillermo Andrés; Diaz, Pablo Rafael; Borrajo, María Paula; Valverde, Claudio Fabián; Creus, Cecilia Mónica; Friends or foes in the rhizosphere: traits of fluorescent Pseudomonas that hinder Azospirillum brasilense growth and root colonization; Wiley Blackwell Publishing, Inc; Fems Microbiology Ecology; 94; 10-2018; 1-10
dc.identifier0168-6496
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8543762
dc.descriptionBacteria of the Azospirillum and Pseudomonas genera are ubiquitous members of the rhizosphere, where they stimulate plant growth. Given the outstanding capacity of pseudomonads to antagonize other microorganisms, we analyzed the interaction between these two bacterial groups to identify determinants of their compatibility. We could establish that, when in direct contact, certain Pseudomonas strains produce lethality on Azospirillum brasilense cells using an antibacterial type 6 secretion system. When analyzing the effect of Pseudomonas spp. diffusible metabolites on A. brasilense growth on King´s B medium, we detected strong inhibitory effects, mostly mediated by siderophores. On Congo Red medium, both inhibitory and stimulatory effects were induced by unidentified compounds. Under this condition, Pseudomonas protegens CHA0 produced a Gac/Rsm-regulated antibiotic which specifically inhibited A. brasilense Sp7 but not Sp245. This effect was not associated with the production of 2,4-diacetylphloroglucinol. The three identified antagonism determinants were also active in vivo, producing a reduction of viable cells of A. brasilense in the roots of wheat seedlings when co-inoculated with pseudomonads. These results are relevant to the understanding of social dynamics in the rhizosphere and might aid in the selection of strains for mixed inoculants.
dc.descriptionFil: Maroniche, Guillermo Andrés. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina
dc.descriptionFil: Diaz, Pablo Rafael. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
dc.descriptionFil: Borrajo, María Paula. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina
dc.descriptionFil: Valverde, Claudio Fabián. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes; Argentina
dc.descriptionFil: Creus, Cecilia Mónica. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
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dc.languageeng
dc.publisherWiley Blackwell Publishing, Inc
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/femsec/article-abstract/94/12/fiy202/5123707
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/10.1093/femsec/fiy202
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subjectAZOSPIRILLUM
dc.subjectPSEUDOMONAS
dc.subjectTYPE VI SECRETION SYSTEM
dc.subjectSIDEROPHORES
dc.subjecthttps://purl.org/becyt/ford/1.6
dc.subjecthttps://purl.org/becyt/ford/1
dc.titleFriends or foes in the rhizosphere: traits of fluorescent Pseudomonas that hinder Azospirillum brasilense growth and root colonization
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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