Identification of phytotoxins produced by Drechslera portulacae, a pathogen of purslane (Portulaca oleracea). II. Isolation of zeaenol and its herbicidal activity.
Zeaenol, isolated from culture filtrates of D. portulacae was characterized using single crystal X-ray diffraction and NMR. When applied at 3 × 10-6 smallcap˜M, zeaenol inhibited root length in Echinochloa crus-galli and Abutilon avicennae [A. theophrasti] by 22.8 and 54.8%, resp.