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http://dx.doi.org/10.5142/JGR.2008.32.1.026

Mycological Characteristics of Botrytis cinerea Causing Gray Mold on Ginseng in Korea  

Cho, Hye-Sun (Bio-resources Center, KT&G Central Research Institute)
Jeon, Yong-Ho (Bio-resources Center, KT&G Central Research Institute)
Do, Gyung-Ran (National Horticultural Research Institute, Rural Development Administration)
Cho, Dae-Hui (Bio-resources Center, KT&G Central Research Institute)
Yu, Yun-Hyun (Bio-resources Center, KT&G Central Research Institute)
Publication Information
Journal of Ginseng Research / v.32, no.1, 2008 , pp. 26-32 More about this Journal
Abstract
A total of 29 Botrytis were isolated from ginseng gray mold at 8 locations in Korea from June to July, 2004 and 2005. The causative agent of them was identified as Botrytis cinerea based on morphological characteristics of conidia and RPB2 gene sequence analysis. In inoculation experiments with sclerotia, one isolate was pathogenic to ginseng plant whereas two isolates were non-pathogenic. Scanning electron microscopy revealed that the sclerotia of pathogenic isolate has rough surface and that of non-pathogenic isolate very smooth surface. Optimum temperature and culture conditions for sclerotia production were $5{\sim}20^{\circ}C$ and darkness, respectively. The number of sclerotia was increased tenfold on media added with 0.5% old stem fragment of ginseng.
Keywords
Ginseng gray mold; Botrytis cinerea; sclerotia; RPB2 gene;
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