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Artículo

Suppressive soil against Sclerotinia sclerotiorum as a source of potential biocontrol agents: selection and evaluation of Clonostachys rosea BAFC1646

Rodriguez, Maria AlejandraIcon ; Rothen, Carolina PaolaIcon ; Lo, Tai EnIcon ; Cabrera, Gabriela MyriamIcon ; Godeas, Alicia MargaritaIcon
Fecha de publicación: 09/2015
Editorial: Taylor & Francis
Revista: Biocontrol Science and Technology
ISSN: 0958-3157
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Micología

Resumen

The fungal diversity structures of soils that are suppressive and non-suppressive to Sclerotinia sclerotiorum were characterised and screened for fungal strains antagonistic to the S. sclerotiorum pathogen. Soil suppressiveness was associated with a particular fungal diversity structure. Principal component analysis showed that antagonism by fungal species in suppressive soils was associated with the occurrence of Fusarium oxysporum, Fusarium solani, Talaromyces flavus var. flavus and Clonostachys rosea f. rosea. In particular, C. rosea f. rosea occurred exclusively in suppressive soil samples, suggesting that this morpho-species plays an important role in suppression of S. sclerotiorum diseases. One strain of C. rosea f. rosea (BAFC1646) was selected for further experiments. Dual-culture assays confirmed the antagonistic behaviour of C. rosea f. rosea BAFC1646 against three different S. sclerotiorum strains. Antifungal activity was corroborated by diffusion assays with metabolite extracts. Greenhouse assays with soybean plants showed that the selected C. rosea f. rosea strain reduced the percentage of dead plants when co-inoculated with S. sclerotiorum. In addition, inclusion of C. rosea f. rosea alone increased shoot lengths significantly. In this work, we established the involvement of fungal species in soil suppressiveness and in further assays confirmed that C. rosea f. rosea BAFC1646 exhibits a bioprotective effect against S. sclerotiorum in soybean plants.
Palabras clave: Biological Control , Sclerotinia Sclerotiorum , Antagonism , Clonostachys Rosea
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/19563
DOI: http://dx.doi.org/10.1080/09583157.2015.1052372
URL: http://www.tandfonline.com/doi/full/10.1080/09583157.2015.1052372
Colecciones
Articulos(IBBEA)
Articulos de INSTITUTO DE BIODIVERSIDAD Y BIOLOGIA EXPERIMENTAL Y APLICADA
Articulos(INBA)
Articulos de INST.DE INVEST. EN BIOCIENCIAS AGRICOLAS Y AMBIENTALES
Articulos(UMYMFOR)
Articulos de UNID.MICROANAL.Y MET.FISICOS EN QUIM.ORG.(I)
Citación
Rodriguez, Maria Alejandra; Rothen, Carolina Paola; Lo, Tai En; Cabrera, Gabriela Myriam; Godeas, Alicia Margarita; Suppressive soil against Sclerotinia sclerotiorum as a source of potential biocontrol agents: selection and evaluation of Clonostachys rosea BAFC1646; Taylor & Francis; Biocontrol Science and Technology; 25; 12; 9-2015; 1388-1409
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