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An anamorphic Bjerkandera adusta R59 strain, isolated from soil, was found to decolorize post-indus­trial lignin alkaline fraction, humic acids isolated from two kinds of soil and from brown coal. The drop of methoxyphenolic compound levels in liquid B. adusta cultures containing lignin or humic acids was correlat­ed with decolorization of studied biopolymers, which suggests their partial biodegradation. It was shown that this process was coupled with the induction of secondary metabolism (idiophase), and highest peroxidase activity in culture medium and appearance of aerial mycelium. Decolorization of lignin and humic acids from lessive soil and brown coal depended on glucose presence (cometabolism). Decolorization of humic acid from chernozem was related partially to adsorption by fungal mycelium.
The frequency and species diversity of keratinophilic fungi in 38 nests of nine species of wetland birds were examined. Nine species of geophilic dermatophytes and 13 Chrysosporium species were recorded. Ch. keratinophilum, which together with its teleomorph (Aphanoascus fulvescens) represented 53% of the keratinolytic mycobiota of the nests, was the most frequently observed species. Chrysosporium tropicum, Trichophyton terrestre and Microsporum gypseum populations were less widespread. The distribution of individual populations was not uniform and depended on physical and chemical properties of the nests (humidity, pH).
A total of 45 species of cellulolytic fungi and ten Fusarium species were identified in seven nests of Montagu’s Harrier. Three genera (Chaetomium, Trichoderma, Fusarium) represented 80% of the frequency of cellulolytic fungi. Of them, Chaetomium globosum, Trichoderma viride and T. koningii were some of the most frequent species. A high differentiation of the richness and frequency of species of cellulolytic fungi depending on the nest and its individual layers was observed. Reasons for the differences in the frequency and species composition of the fungi were discussed.
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Enzymatic activity of Phlebiopsis gigantea isolates

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Initial experiment was made in order to test wood-decomposing fungus Phlebiopsis gigantea for enzymatic activity. Laccase, peroxidase, cellulase, phosphatase, dehydrogenase were marked using different methods for P. gigantea isolates growing on Scots pine wood.
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