Control Efficacy of Streptomyces sp. A501 against Ginseng Damping-off and Its Antifungal Substance
| Autor: | Bong-Sik Yun, In-Kyoung Lee, Jae Eul Choi, Gang-Seon Lee, Dae-Won Ki, Kyeong-Hun Park, Sang-Yeob Lee, Jaekyeong Song, Nguyen Van Minh, E-Eum Woo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Fungichromin biology Chemical structure Rhizoctonia solani Damping off food and beverages Ginseng damping-off Streptomyces sp. A501 Rhizoctonia biology.organism_classification Microbiology Streptomyces 03 medical and health sciences Ginseng Research Note 030104 developmental biology Infectious Diseases Food science Pythium Medicinal plants |
| Zdroj: | Mycobiology |
| ISSN: | 2092-9323 1229-8093 |
| Popis: | Ginseng damping-off, caused by the fungal pathogens Rhizoctonia solani and Pythium sp., is a critical disease in ginseng seedling. In a continuing effort to find microorganisms with the potential of acting as a biocontrol agent against Rhizoctonia damping-off, we found that a Streptomyces sp. A501 showed significant antifungal activity against Rhizoctonia solani. In field experiment to test the efficacy of Streptomyces sp. A501 in controlling ginseng damping-off, the incidence of damping-off disease was meaningfully reduced when ginseng seeds were soaked in the culture broth of Streptomyces sp. A501 before sowing. To perform characterization of the antifungal compound, we isolated it from the culture broth of strain A501 through Diaion HP-20 and silica gel column chromatographies and preparative high-performance liquid chromatography. The structure of the antifungal compound was assigned as fungichromin by spectroscopic methods, mainly nuclear magnetic resonance and electrospray ionization-mass analysis. |
| Databáze: | OpenAIRE |
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