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http://dx.doi.org/10.5423/RPD.2006.12.2.085

Optimum Cultivation Conditions for Mass Production of an Antagonistic Bacterium Bacillus subtilis BD0310 for Development of a Microbial Agent Controlling Gray Blight of Tea Plants  

Kim Gyoung-Hee (Department of Plant Medicine, Sunchon National University)
Oh Soon-Ok (Department of Plant Medicine, Sunchon National University)
Hur Jae-Seoun (Department of Environmental Education, Sunchon National University)
Yum Kue-Jin (Coenbio Institute of Research and Development)
Koh Young-Jin (Department of Plant Medicine, Sunchon National University)
Publication Information
Research in Plant Disease / v.12, no.2, 2006 , pp. 85-90 More about this Journal
Abstract
Bacillus subtilis BD0310 isolated from tea leaves was used for the development of a biofungicide against Pestalotiopsis longiseta causing gray blight of tea plants. The optimum growth conditions were investigated for the mass cultivation of the microbial agent. The optimum temperature and cultivation time were determined as $12{\sim}24$ hours at $30^{\circ}C$ and the optimum initial pH was pH 7.0 in nutrient broth. Among the tested carbon sources of fructose, galactose, glucose, glycerol, inositol, lactose, maltose, sorbitol and starch, maltose and inositol were found to highly increase antifungal activity of the microbial agent against P. longiseta. Yeast extract and tryptone apparently increased antifungal activity of the microbial agent among the tested nitrogen sources of casein, tryptone, malt extract, yeast extract and $(NH_4)_2SO_4$. The results will make a contribution to mass production of the antagonistic bacterium Bacillus subtilis BD0310 for development of a microbial agent controlling gray blight of tea plants.
Keywords
Bacillus subtilis BD0310; Biocontrol; Gray blight; Microbial agent; Pestalotiopsis longiseta;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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