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http://dx.doi.org/10.5352/JLS.2013.23.8.1010

The Optimal Condition and Enzyme Activity of Entomopathogenic Fungus Beauveria bassiana Using Extracted Rice Bran  

Kim, Chang-Su (Department of Bioresource Sciences, Andong National University)
Lee, Jung-Bok (Department of Bioresource Sciences, Andong National University)
Kim, Beam-Soo (Department of Bioresource Sciences, Andong National University)
Lee, Min-Hye (Department of Bioresource Sciences, Andong National University)
Kang, Kyeong-Muk (Department of Bioresource Sciences, Andong National University)
Joo, Woo-Hong (Department of Biology, Changwon National University)
Kim, Jin-Won (Yecheon Agriculture Technology Center)
Im, Dae-Joon (Yecheon Agriculture Technology Center)
Kwon, Gi-Seok (Department of Bioresource Sciences, Andong National University)
Publication Information
Journal of Life Science / v.23, no.8, 2013 , pp. 1010-1018 More about this Journal
Abstract
The greenhouse whitefly, Bemisia tabaci, is considered one of the most destructive pests of crops. In this study, we aimed to determine the optimal liquid culture conditions in shake flasks for maximal sporulation of Beauveria bassiana M130 using rice bran. The optimal initial pH for the spore production of B. bassiana using extracted rice bran medium was 5.2 and $28^{\circ}C$. The screening in shake flasks of carbon and nitrogen sources resulted in the identification of an optimal medium based on 0.5% $(NH_4)_2SO_4$, with extracted rice bran 8:1. Using this medium, a production level of $2.15{\times}10^9$ spores per ml was obtained after six days from culture inoculation at $28^{\circ}C$ in a rotary shaking incubator at 130 rpm. In addition, the specific activities of extracellular enzymes of chitinase and protease were $4,296{\mu}mol$ and $375{\mu}mol$, respectively. These results suggest that Beauveria bassiana M130 could be a bio-controller for the greenhouse whitefly.
Keywords
Beauveria bassiana; entomopathogenic fungi; enzyme activity; greenhouse whitefly; rice bran;
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Times Cited By KSCI : 7  (Citation Analysis)
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