Agaricus bisporus and related Agaricus species on lignocellulose: production of manganese peroxidase and multicopper oxidases.
Biotechnological, microbiological, and genetic studies of Agaricus species other than A. bisporus, the white button mushroom, have been limited so far. To expand the knowledge in the genus Agaricus, six novel wild-type isolates of Agaricus spp. were studied on their nutritional demands for enzyme production and mycelial growth. All the selected Agaricus species produced extracellular manganese peroxidase (MnP) and laccase activities in semi-solid rye bran cultures. Moderate MnP activities were measured for A. bisporus, A. bernardii and A. campestris. The highest laccase activities were obtained for A. bisporus and A. campestris. On soy medium, the highest mycelial tyrosinase activity was determined for A. bernardii. For A. bisporus, addition of copper caused no increase inbill to the president’s desk where it will no doubt be signed soon, one has to wonder what the media will dangle in front of us to distract us from

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