SCREENING OF ANTAGONISTIC FUNGI FROM Trichoderma spp. FOR BIOLOGICAL CONTROL OF IMPORTANT PLANT PATHOGENS

摘要

The fungi from genus Trichoderma are well known as biocontrol agents, used worldwide against different plant pathogenic fungi. Trichoderma spp. are free-living fungi that are common in soil and root ecosystems. Seven local isolates from Trichoderma spp. were investigated for their ability to suppress growth of various plant pathogenic fungi and the ability to produce substances with antifungal activity. Fungal hydrolytic enzyme activities, produced by Trichoderma isolates, such as proteolytic and cellulolytic activities, were compared as well. Among all isolates, Trichoderma spp. Tr5 and Tr6 showed a wide range of inhibitory effects against the plant pathogens, good antibiotic and enzyme activity and were selected for further investigation for large scale biocontrol application.