Xanthofusin, an antifungal tetronic acid from Fusicoccum sp.: production, isolation and structure.

Symptom-bearing plant material of the Lilliaceae, Ashodelus macrocarpus, was collected July 1991 in Greece. After surface sterilization, small segments of stem, leaf and fruit were plated on Potato Dextrose Agar (PDA, Difco) plates and incubated for 2 days at 26°C. Pure cultures could be obtained from the plates by one additional transfer to PDA plates. The culture was maintained on PDAslants and deposited with the International Mycological Institute Culture Collection, Kew, England (IMI CC No. 351573).