Objective: Toxin produced by phytopathogenic fungi is one of the important microbial herbicides. We found a new compound with herbicidal activity.
Methods: Five different ultraviolet absorption components were isolated from the filtrate of Botrytis cinerea isolate 7-3 culture.
Results: Of the five components, one showed strong inhibitory to Digitaria sanguinalis. The pure fraction with high herbicidal activity was obtained by HPLC purification. Its structure was identified as 10-syn-dihydrobotrydial by Ultraviolet and Visible Spectroscopy, Infrared Spectrum, Nuclear Magnetic Resonance Spectroscopy analysis.
Conclusion: The findings are important for future preparation and application of the herbicide.