The cellulolytic and endoglucanase activity of Fusarium oxysporum strains isolated from soil and plants in the media with plant waste as carbon source has been studied. It was established that the majority of studied strains were able to hydrolyze the filter paper, husk of sunflower seeds, wheat straw and corn stalks. Cellulolytic activity depended on the strain of microscopic fungi, type of substrate and duration of cultivation. The maximum cellulase activity 1 U/ml and the concentration of reducing sugars -0.875 mg/ml were found in soil strain F. oxysporum 420 in the medium with corn stalks. Endoglucanase activity of plant pathogenic strains was higher than that of soil ones.
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