Microbial Community Composition in Take-All Suppressive Soils

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dc.contributor.authorDurán, Paola
dc.contributor.authorTortella, Gonzalo
dc.contributor.authorViscardi, Sharon
dc.contributor.authorBarra, Patricio Javier
dc.contributor.authorCarrión, Victor
dc.contributor.authorde La Luz Mora, María
dc.contributor.authorPozo, María José
dc.coverageChileen_US
dc.date2018
dc.date.accessioned2024-03-11T21:34:27Z
dc.date.available2024-03-11T21:34:27Z
dc.description.abstractGaeumannomyces graminis var. tritici (Ggt) is the main soilborne factor that affects wheat production around the world. Recently we reported the occurrence of six suppressive soils in monoculture areas from indigenous "Mapuche" communities, and evidenced that the suppression relied on the biotic component of those soils. Here, we compare the rhizosphere and endosphere microbial community structure (total bacteria, actinomycetes, total fungi, and ascomycetes) of wheat plants grown in suppressive and conducive soils. Our results suggested that Ggt suppression could be mediated mostly by bacterial endophytes, rather than rhizosphere microorganisms, since the community structure was similar in all suppressive soils as compared with conducive. Interestingly, we found that despite the lower incidence of take-all disease in suppressive soils, the Ggt concentration in roots was not significantly reduced in all suppressive soils compared to those growing in conducive soil. Therefore, the disease suppression is not always related to a reduction of the pathogen biomass. Furthermore, we isolated endophytic bacteria from wheat roots growing in suppressive soils. Among them we identified Serratia spp. and Enterobacter spp. able to inhibit Ggt growth in vitro. Since the disease, but not always pathogen amount, was reduced in the suppressive soils, we propose that take all disease suppressiveness is not only related to direct antagonism to the pathogen.en_US
dc.description.versionpostprinten_US
dc.formatPDFen_US
dc.identifier.citationFrontiers in Microbiology, Vol.9, 2198, 2018en_US
dc.identifier.doi10.3389/fmicb.2018.02198en_US
dc.identifier.issn1664-302Xen_US
dc.identifier.urihttps://repositoriodigital.uct.cl/handle/10925/5519
dc.language.isoenen_US
dc.rightsFRONTIERS MEDIA SAen_US
dc.rightsObra bajo licencia Creative Commons Atribución 4.0 Internacional
dc.sourceFrontiers in Microbiologyen_US
dc.subjectGaeumannomyces graminisen_US
dc.subjectTake all
dc.subjectSuppressive soils
dc.subjectReal time PCR
dc.subjectMicrobial diversity
dc.subjectSuelos supresivos
dc.subjectDiversidad microbiana
dc.titleMicrobial Community Composition in Take-All Suppressive Soilsen_US
dc.typeArtículo de Revistaen_US
uct.carreraNutrición y Dietéticaen_US
uct.catalogadorJCCLen_US
uct.comunidadCiencias de la Saluden_US
uct.disciplinaNutrición y Dietéticaen_US
uct.facultadFacultad de Ciencias de la Saluden_US
uct.indizacionSCI EXPANDEDen_US
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