To characterize the antifungal activities of the two novel
polyoxins, polyoxin P and O were subjected to bioassay
against Alternaria kikuchiana, Aspergillus fumigates,
Rhizoctonia solani, Botrytis cinerea and Trichoderma vir-
ide using polyoxin H as a control (Figure 4). It was
shown that polyoxin P displayed potent inhibitory activ-
ity, whereas the activity of polyoxin O was very weak.