Repositorio
Institucional

Duran, Paola

Tortella, Gonzalo#Viscardi, Sharon#Javier Barra, Patricio#Carrion, Victor J.#de la Luz Mora, Maria#Jose Pozo, Maria

Microbial Community Composition in Take-All Suppressive Soils

FRONTIERS MEDIA SA

FRONTIERS IN MICROBIOLOGY

en

"Gaeumannomyces 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."

Artículo original

This study was supported by the Comision Nacional de Investigacion Cientifica and Tecnologica (CONICYT), FONDECYT Initiation Project No. 11150540 from Chilean Government and technical support of the Scientific and Technological Bioresources Nucleus (BIOREN) from La Frontera University. GT thanks for the support by FONDECYT No. 1161713.

Este estudio contó con el apoyo de la Comisión Nacional de Investigación Científica y Tecnológica (CONICYT), el Proyecto de Iniciación FONDECYT n.° 11150540 del Gobierno de Chile y el apoyo técnico del Núcleo Científico y Tecnológico de Biorrecursos (BIOREN) de la Universidad de La Frontera. GT agradece el apoyo del FONDECYT n.° 1161713.

10.3389/fmicb.2018.02198

pdf

Gaeumannomyces graminis# microbial diversity# suppressive soils# take-all# real time PCR

http://dx.doi.org/10.3389/fmicb.2018.02198

Microbiology

Gaeumannomyces graminis# diversidad microbiana# suelos supresores# tomarlo todo# PCR en tiempo real

Fitomejoramiento y protección vegetal

Agricultura

Microbiología

WOS:000445011000001

Microbial Community Composition in Take-All Suppressive Soils

Artículo original

version publicada

FRONTIERS MEDIA SA

FRONTIERS IN MICROBIOLOGY

Microbiología

1664-302X

en

ANID FONDECYT 11150540#ANID FONDECYT 1161713

ANID FONDECYT Initiation 11150540

ANID FONDECYT 1161713

This study was supported by the Comision Nacional de Investigacion Cientifica and Tecnologica (CONICYT), FONDECYT Initiation Project No. 11150540 from Chilean Government and technical support of the Scientific and Technological Bioresources Nucleus (BIOREN) from La Frontera University. GT thanks for the support by FONDECYT No. 1161713.

pdf

dorada#verde

acceso abierto

acceso abierto

CC BY

164

170