Castaneiolide, abscisic acid and monorden, phytotoxic compounds isolated from fungi (Macrophoma castaneicola and Didymosporium radicicola) cause "black root rot disease" in chestnut trees.

Abstract

Macrophoma castaneicola and Didymosporium radicicola are pathogens causing chestnut black root rot disease. A new metabolite, castaneiolide, and abscisic acid were isolated from M. castaneicola and monorden was from D. radicicola. These metabolites were toxic to chestnut leaves.