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KMID : 1024520200290050435
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Journal of the Environmental Sciences
2020 Volume.29 No. 5 p.435 ~ p.443
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Selection of Burkholderia pyrrocinia LA101
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Na Jeong-Woo
Jang Myoung-Jun
Ann Seoung-Won
Park Youn-Jin
Cho Yong-Koo
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Abstract
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The purpose of this study was to investigate eco-friendly measures to manage major diseases which cause heavy economic damages to ginseng. Morphological, physicochemical, and molecular biological species identification was carried out after isolating useful antagonistic bacteria from ginseng fields. In addition, optimal conditions for mass culture were established, and he efficacy of the bacteria in the prevention of the diseases was verified in the field. The results showed that about 150 bacteria were extracted from 150 ginseng fields in the whole county. Among them, B. pyrrocinia LA101 was finally selected, which had a strong antagonistic potency against Alternaria panax, Botrytis cinerea, Rhizoctonia solani, and Cylindrocarpon destructans on agar media. The B. pyrrocinia LA101 is a baculiform gram-negative bacterium identified as Burkholderia pyrrocinia according to results from an API(Analytical Profile Index) kit, 16S rRNA, and gyrase gene sequencing analysis. It was donated to the microbe bank of the Agricultural Genetic Resources Center at the National Academy of Agriculture Science under the Rural Development Administration on September 28, 2011 (Donation No. KACC91663P). A patent for the mass culture technology was granted in August 2012 (Patent No. 10-1175532).
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KEYWORD
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Antagonistic microorganism, Biological control, Ginseng pathogenic fungi, Burkholderia pyrrocinia
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