Characterization of a phytotoxic cyclotetrapeptide, a novel chlamydocin analogue, from Verticillium coccosporum

Abstract A phytotoxic cyclotetrapeptide containing an unusual amino acid, 2-amino-8-oxo-9-hydroxydecanoic acid, was isolated from the fungus Verticillium coccosporum . Structurally, the peptide is closely related to the known peptide chlamydocin.