Abstract
A biosolubilizing activity of Trametes hirsuta and T. maxima basidiomycetes towards brown coal during liquid-phase cultivation has been studied. The degrading capacity of the studied fungi was demonstrated to be ensured by the activity of ligninolytic enzymes of Mn-peroxidase and lignin-peroxidase. A growth-stimulating capacity of the biopreparations (BPs) based on the culture liquids of the studied strains grown in a complete or limited medium was assessed. The obtained BPs were shown to inhibit wheat shoots and roots at the germination stage, but the later stages of plant development are either not suppressed or even stimulated by the BPs. After the basidiomycets were cultivated in the presence of brown coal, the obtained BPs stimulated the root growth at the germination stage and either did not influence the plant growth (BP derived from the T. hirsuta culture liquid) or stimulated it (BP derived from T. maxima culture liquid) at the later stages of the plant development. A pronounced detoxifying ability of the BPs in respect of an atrazine herbicide was observed. This activity was presumably related to the occurrence of laccases in the studied BPs.
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