Bacillus sp. BS061 Suppresses Gray Mold and Powdery Mildew through the Secretion of Different Bioactive Substances

A Bacillus sp. BS061 significantly reduced disease incidence of gray mold and powdery mildew. To identify the active principle, the culture filtrate was partitioned between butanol and water. The antifungal activity against B. cinerea was evident in the butanol-soluble portion, and active substances...

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Detalles Bibliográficos
Autores principales: Kim, Young-Sook, Song, Ja-Gyeong, Lee, In-Kyoung, Yeo, Woon-Hyung, Yun, Bong-Sik
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Korean Society of Mycology 2013
Materias:
Research Note
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3817233/
https://www.ncbi.nlm.nih.gov/pubmed/24198673
http://dx.doi.org/10.5941/MYCO.2013.41.3.164
Descripción
Sumario:A Bacillus sp. BS061 significantly reduced disease incidence of gray mold and powdery mildew. To identify the active principle, the culture filtrate was partitioned between butanol and water. The antifungal activity against B. cinerea was evident in the butanol-soluble portion, and active substances were identified as cyclic lipopeptides, iturin A series, by nuclear magnetic resonance spectrometry (NMR) and mass analysis. Interestingly, antifungal activity against powdery mildew was observed in the water-soluble portion, suggesting that cyclic lipopeptides have no responsibility to suppress powdery mildew. This finding reveals that biocontrol agents of Bacillus origin suppress gray mold and powdery mildew through the secretion of different bioactive substances.

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