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KMID : 0379120110390010016
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Korean Journal of Mycology
2011 Volume.39 No. 1 p.16 ~ p.21
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Genetic Diversity of Korean Cylindrocarpon destructans Based on Virulence Aassay and RAPD Analysis
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Seo Moon-Won
Kim Sun-Ick
Song Jeong-Young
Kim Hong-GI
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Abstract
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Ginseng root rot caused by Cylindrocarpon destructans is one of the most destructive diseases of ginseng (Panax ginseng). We analyzed the features of the species through pathogenicity test and genetic diversity analysis of C. destructans in Korea, for its application as basic data to attempt for effective control. C. destructans isolated from rotted ginseng roots exhibited a variety of colonial colors on media. It was assumed that there may exist genetic diversity in the population by the diversity of pathogenicity among isolates observed when artificially inoculated into ginseng roots. Pathogenicity tests using ex vivo wound inoculation with agar mixture inoculation on ginseng roots were performed similar results as were observed appear to be useful for rapid pathogen inspection. According to RAPD analysis results, Korean C. destructans isolates formed a single genetic group which can be distinguished readily from closely related other fungi. C. destructans group was divided into two small groups. Therefore, we were able to confirm pathogenicity and genetic difference between the isolates in each of the groups of the pathogen.
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KEYWORD
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Cylindrocarpon destructans, Genetic diversity, Ginseng root rot, Pathogenicity test, RAPD analysis
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