Fistupyrone, a novel inhibitor of the infection of Chinese cabbage by Alternaria brassicicola, from Streptomyces sp TP-A0569

A new microbial metabolite, designated fistupyrone, was isolated from the c ulture broth of a plant-associated Streptomyces sp. TP-A0569. Fistupyrone i nhibited the in vivo infection of the seedlings of Chinese cabbage by Alter naria brassicicola TP-F0423, the cause of Alternaria leaf spot, without any in vitro fungicidal activity.