Mycobiology.
2015 Sep;43(3):333-338. 10.5941/MYCO.2015.43.3.333.
Antifungal Substances from Streptomyces sp. A3265 Antagonistic to Plant Pathogenic Fungi
- Affiliations
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- 1Division of Biotechnology and Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan 54596, Korea. bsyun@jbnu.ac.kr
- KMID: 2312831
- DOI: http://doi.org/10.5941/MYCO.2015.43.3.333
Abstract
- In a previous study, we identified a Streptomyces sp., A3265, as exhibiting potent antifungal activity against various plant pathogenic fungi, including Botrytis cinerea, Colletotrichum gloeosporioides, and Rhizoctonia solani. This strain also exhibited a biocontrolling effect against ginseng root rot and damping-off disease, common diseases of ginseng and other crops. In this study, we isolated two antifungal substances responsible for this biocontrolling effect via Diaion HP-20 and Sephadex LH-20 column chromatography, medium pressure liquid chromatography, and high-performance liquid chromatography. These compounds were identified as guanidylfungin A and methyl guanidylfungin A by spectroscopic methods. These compounds exhibited potent antimicrobial activity against various plant pathogenic fungi as well as against bacteria.
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