Volume 26, Issue 5 p. 363-366

Influence of quercetin, a bioflavonoid, on the toxicity of copper to Fusarium culmorum

Park

Park

Korea Research Institute of Bioscience and Biotechnology, Yusong,

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Choi

Choi

Department of Biology, PaiChai University, Taejon, Korea

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Lee

Lee

Department of Biology, PaiChai University, Taejon, Korea

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Kim

Kim

Korea Research Institute of Bioscience and Biotechnology, Yusong,

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First published: 04 January 2002
Citations: 3
Dr Choi Department of Biology, Pai Chai University, 439-6 Doma 2-dong, Seo-gu, Taejon 302-735, Korea (e-mail : [email protected]).

Abstract

The effect of quercetin on copper toxicity to the mycelial growth of Fusarium culmorum was investigated. Increasing concentrations of copper produced dose-dependent inhibition in yeast extract and malt extract agar. However, the toxic level of copper against fungal growth was significantly affected by the concentration of yeast extract in the medium, compared to that of malt extract. Apart from the difference in toxic level of copper, the addition of quercetin antagonized copper toxicity to hyphae morphology and resulted in the reversal of fungal growth inhibition. Quercetin showed a protective ability similar to citrate, and was more effective than acetate and proline.