Phytotoxic constituents from Nimbya alternantherae
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Data
2006-11
Título da Revista
ISSN da Revista
Título de Volume
Editor
Biochemical Systematics and Ecology
Resumo
A phytotoxic compound identified as 6-(3,3-dimethylallyloxy)-4-methoxy-5-methylphthalide (1), was isolated from the phytopathogenic fungus Nimbya alternantherae, cultivated on solid media. Catalytic hydrogenation of 1 resulted in the quantitative formation of second compound (2). Both compounds (1, 2) act by inhibiting the ATP synthesis in spinach thylakoids. A detailed investigation on the mechanism of action indicates that compound 1 acts as a Hill reaction inhibitor and uncoupler of photosynthesis.
Descrição
Palavras-chave
Natural herbicide, Anamorphic fungi, Weed, Alligator weed, Biological control, Lactone, Photosynthesis inhibitor