title: Selenium induces manganese-dependent peroxidase production by the white-rot fungus Bjerkandera adusta (Willdenow) P. Karsten.
abstract: In this study, selenium (Se) induction of the ligninolytic enzyme manganese-dependent peroxidase (MnP) production, and the effects on the oxidative state in the white-rot fungus Bjerkandera adusta (Willdenow) P. Karsten were demonstrated. Low concentration of Se (0.5 mM) caused up to a twofold increase in MnP production (0.81 +/- 0.05 U/ml) when compared to control (0.39 +/- 0.07 U/ml), whereas higher concentrations of Se (200 mM) inhibited (0.03 +/- 0.01 U/ml) MnP production. Addition of high concentration of Se also caused up to a twofold increase in lipid peroxidation levels. These results demonstrate for the first time that Se may induce or reduce MnP production and lipid peroxidation levels which play a significant role in lignin degradation by white-rot fungi.
authors.affiliation: Department of Molecular Biology and Genetics Faculty of Sciences and Letters, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey. catalt@itu.edu.tr
authors.forename: Tunc
authors.initials: T
authors.lastname: Catal
authors.forename: Hong
authors.initials: H
authors.lastname: Liu
authors.forename: Hakan
authors.initials: H
authors.lastname: Bermek
mesh_terms: D001487:Basidiomycota / Q000187:drug effects* / Q000201:enzymology; D018533:Biomass; D015227:Lipid Peroxidation; D008345:Manganese / Q000378:metabolism*; D010544:Peroxidases / Q000096:biosynthesis* / Q000378:metabolism; D012643:Selenium / Q000494:pharmacology*
chemical_list: D008345:Manganese; D010544:Peroxidases; D012643:Selenium