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UPTAKE OF CADMIUM IONS IN WHITE‐ROT FUNGUS TRAMETES VERSICOLOR : EFFECT OF CD (II) IONS ON THE ACTIVITY OF LACCASE
Author(s) -
JaroszWilkołazka Anna,
Malarczyk Elzbieta,
Pirszel Jacek,
Skowroński Tadeusz,
Leonowicz Andrzej
Publication year - 2002
Publication title -
cell biology international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.932
H-Index - 77
eISSN - 1095-8355
pISSN - 1065-6995
DOI - 10.1006/cbir.2002.0887
Subject(s) - trametes versicolor , cadmium , mycelium , laccase , chemistry , extracellular , strain (injury) , dry weight , ion , nuclear chemistry , aqueous solution , food science , metal ions in aqueous solution , incubation , fungus , biochemistry , microbiology and biotechnology , botany , biology , enzyme , organic chemistry , anatomy
The effects of cadmium Cd (II) ions on the physiology and biological activity of Trametes versicolor , a strain belonging to white‐rotting Basidiomycetes , were examined. Cd (II) ions were added to 10‐day‐old cultures grown on a liquid medium, or at the time of inoculation. Our experiments showed that T. versicolor is a good cadmium biosorbent from aqueous solution, this strain removing almost all the Cd (ll) ions over the first 2h of incubation by what appears to be a rapid, energy‐independent surface binding phenomenon, at the rate of ∼2mg Cd per g mycelial dry weight. An additional slower and energy‐dependent transport mechanism was also present, taking in ∼0.3mg Cd (II) perg dry weight. It is also shown that these Cd (II) ions significantly stimulate the activity of extracellular laccase when added to 10‐day‐old cultures.