期刊
BIOCONTROL SCIENCE AND TECHNOLOGY
卷 26, 期 4, 页码 476-491出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/09583157.2015.1126223
关键词
Bacterial metabolite; indole derivative; Pantoea ananatis 4G-9; Mycosphaerella musicola; secondary metabolite
资金
- University of Mysore
- University Grant Commission, New Delhi
An endophytic bacterium isolated from banana G-9 (AAA genotype) leaves exhibited strong antagonistic activity against Mycosphaerella musicola. The isolate was identified as Pantoea ananatis 4G-9 by 16S rRNA sequence analysis. Secondary metabolite obtained from P. ananatis 4G-9 was found to have antifungal activity. The active compound was purified from crude extract using column chromatography. Purity of the active compound was assessed using high-performance liquid chromatography. Spectral analysis of compound using infrared, mass spectrometry and nuclear magnetic resonance indicated that the compound structure is an indole derivative. The compound showed strong and dose-dependent antifungal activity against M. musicola. This is the first report on P. ananatis isolated as an endophyte from banana leaves and its antifungal activity against M. musicola.
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