The Korean Journal of Mycology (한국균학회지)

The Korean Society of Mycology (한국균학회)
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Screening of Antagonistic Bacteria for Biological control of Ginseng Root Rot

인삼뿌리썩음병 방제에 유효한 길항미생물의 탐색

  • Received : 2011.11.28
  • Accepted : 2012.01.26
  • Published : 2012.04.01
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Abstract

Ginseng (Panax ginseng) is one of the most widely cultivated medicinal herb in Korea. However, yield losses reached up to 30~60 % due to various diseases during 3 or 5 years of ginseng cultivation. Therefore, successful production of ginseng roots depends primarily on the control of diseases. The objective of this study is to select potential multifunctional biocontrol agents from actinomycetes for the control of multiple ginseng diseases as an alternative to fungicides. Ninety three Streptomyces strains were selected and their ability to produce antibiotics, siderophore and lytic enzymes such as protease and cellulose were investigated. Eight of the isolates, strains A75, A501, 515, 523, A704, A1444, A3265 and A3283 produced cellulase and protease. These strains also produced siderophore and showed potent antifungal activity against Botrytis cinerea, Cylindrocarpon destructans, Collectotricum gloeosporioides, Phytophthora capsici and Rhizoctonia solani causing ginseng root rot.

인삼의 뿌리썩음병 방제를 위하여 다양한 식물 근권 토양으로부터 유용방선균을 분리하였으며 이들의 생물활성을 조사하였다. 93종의 분리 방선균 중 콜로니가 상이하고 항균활성이 우수한 방선균 8종을 선발하였다. 이들 방선균(A75, A501, A515, A523, A704, A03-1444, A3265, A3283)은 siderophore를 생산하며 cellulase와 protease와 같은 곰팡이 세포벽 분해효소를 생산하였다. 또한 인삼뿌리썩음의 주요 원인균인 C. destructans, B. cinerea, R. solani 등에 대하여 강한 길항 활성을 나타내었다.

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References

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