한국식물병리학회지 (Korean Journal Plant Pathology)
- 제14권4호
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- Pages.345-349
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- 1998
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- 0256-8608(pISSN)
점액세균 KR025의 분리 동정 및 생리활성물질의 탐색
Isolation and Identification of Myxobacteria KR025 and Searching of Their Bioactive Compounds
초록
Fifty isolates of myxobacteria were isolated from soils from several areas in Korea during 1996-1997 and bioactivity against plant pathogenic fungi of these isolates was examined. A myxobacterial isolate KR025 showed good antifungal activities against Pyricularia oryzae, Cryphonectria parasitica, Colletotrichum lagenarium, and C. gloeosporioides but did not against Rhizoctonia solani, Fusarium oxysporum and Pythium ultimum. The bacterium was identified as Myxococcus fulvus based on morphological and physiological characteristics. Antifungal substances were extracted from culture broth and bacterial cell of Myxococcus fulvus KR025 by ethyl acetate. Antifungal substance of Myxothiazole (100