THE PRODUCTION OF SOLUBLE ANTIFUNGAL METABOLITES BY THE BIOCONTROL FUNGUS TRICHODERMA-HARZIANUM IN CONNECTION WITH THE FORMATION OF CONIDIOSPORES

The formation of spores and the correlated production of soluble metab olites, mainly the trichorzianines out of the pentaibolclass, were tes ted with four strains of the fungus Trichoderma harzianum exerted agai nst Phanerochaete chrysosporium in an agar diffusion test. The antifun gal metabolites could only be detected after conidiogenesis took place . We concluded that the trichorzianines are responsible for the main b iocontrol effect on wood by soluble metabolites and that they are prod uced during conidiogenesis.