In vivo antifungal activities of 67 plant fruit extracts against six plant pathogenic fungi

Methanol extracts of fruits of 67 plants were screened for in vivo antifungal activity against Magnaporthe grisea, Corticium sasaki, Botrytis cinerea, Phylophthora infestans, Puccinia recondita, and Blumeria graminis f. sp. hordei. Among them, 13 plant extracts (3,000 mu g/ml) showed more than 90% disease-control efficacy against at least one of six plant diseases. Specifically, the extracts of Aleurites fordii, Angelica dahurica, Camellia japonica, Chamaecyparis pisifera, Pittosporum tobira, and Styrax japonica controlled more than 90% of the development of rice blast at 1,000 mu g/ml. Extracts of both S. japonica and A. dahurica fruits at 333 mu g/ml concentration displayed strong antifungal activity against M grisea on rice seedlings.