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KMID : 1098420090170060464
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Korean Journal of Medicinal Crop Science
2009 Volume.17 No. 6 p.464 ~ p.469
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Antifungal Activity of Impatiens balsamina against Ginseng Pathogen Alternaria panax
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Ahn Tae-Jin
Shin Yoo-Su
Lee Seung-Eun
Ahn Young-Sup
Kim Young-Guk
Park Chung-Berm
Yu Seung-Hun
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Abstract
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This study was conducted to find out environment-friendly disease control method to Alternaria blight caused by Alternaria panax of ginseng. For this study, 150 methanol extracts from medicinal plants were evaluated and the extract of Impatiens balsamina showed most strong antifungal activity against A. panax. The methanol extract of I. balsamina showed also stable antifungal activity against other ginseng pathogens such as Botrytis cinerea and Fusarium sp., when treated by heat or pH. In vivo, Alternaria blight incidence rate was low of 13% with the treatment of I. balsamina methanol extract compared to 35% of the non-treatment. The antifungal compound of I. balsamina was purified and identified by using a silica gel column chromatography, TLC and ESI-LC/MS/MS analysis. The compound which showed strong antifungal activity was identified as 2-methoxy-1,4-naphtoquinone (C11H8O3).
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KEYWORD
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Impatiens balsamina, Antifungal Activity, Alternaria panax
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