차나무 겹둥근무늬병의 발생소장 및 엽권 길항미생물 선발 |
오순옥, 김경희, 임광미, 허재선, 고영진 |
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Disease Progress of Gray Blight on Tea Plant and Selection of a Biocontrol Agent from Phylloplanes of the Plant |
Soon Ok Oh, Gyoung Hee Kim, Kwang Mi Lim, Jae Seoun Hur, Young Jin Koh |
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Abstract |
Disease progress of gray blight of tea (Camellia sinensis O. Kuntze) cv. Yabukita was investigated during the growing season of 2004 at Boseong Tea Experiment Station, Jeonnam Agriculture Research and Extension Service, Boseong, Jeonnam. The disease began to occur from late June and peaked in late July. Antagonistic bacteria against Pestalotiopsis longiseta, the causal pathogen of causing gray blight of tea plants were isolated from phylloplanes of tea plants. An isolate BD0310 which showed the strongest antifungal activity against the pathogen but nonpathogenic to tea plants was selected as a biocontrol agent for the gray blight. The isolate was identified as Bacillus subtilis based on its cultural, morphological, and biochemical characterization and 16S rDNA sequence analysis. |
Key Words:
Bacillus subtilis, Biocontrol, Gray blight, Pestalotiopsis Longiseta, Tea plant |
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