Eighty-three strains belonging to three species of the genus Trametes FR. (T. versicolor, T. hirsuta and T. ochracea) collected in different localities and on different substrates were screened for laccase production. The production of other lignin-modifying enzymes--manganese peroxidase (MnP) and lignin peroxidase (LiP)--and the decolorization ability were also determined in 21 of them. Production variability was relatively high and no significant correlation was found between the origin of the strains (locality, substrate) and the enzyme production. Dikaryons of all 3 species (but not of all their strains) exhibited LiP activity, which was not detected in the respective monokaryons.

Institute of Microbiology Academy of Sciences of the Czech Republic 142 20 Prague Czechia

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