Add time:07/18/2019         Source:sciencedirect.com

2,3-Dihydro-5-hydroxy-2-methyl-4H-1-benzopyran-4-one, was isolated from 3 week old rice cultures of Phialophora gregata, a soybean pathogen, grown at 25°C. This material in repeated bioassays prevented callus formation on soybean hypocotyl sections at 100 and 200 mg/ml callus culture medium. This is the first report of the production of this metabolite by a member of the Phialphora genus and of its toxicity to soybeans.

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