In the present work the ability of three Trichoderma mould strains to lytic enzymes biosynthesis, effective in degradation of pathogenic microorganisms cell walls, was examined. These enzymes play a very important role in the mycoparasitism process. In shaking cultures two different media types were used, in regard not only in case of mineral components, but also different kind of carbon source, which was simultaneously an inductor for the synthesis of hydrolases. The differentiation in biosynthesis of enzymes was confirmed. The highest capability to produce chitinases and β-1,3-glucanases characterized the Trichoderma hamatum C1 strain (1,17 nKat·ml^-1, 27 nKat·ml^-1, respectively). The mould strains, active in biosynthesis of chitinase and laminarinase, could be useful as microbiological vaccines in plant protection against pathogenic moulds.

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