Isolation and selection of novel basidiomycetes for decolorization of recalcitrant dyes
Language English Country United States Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
- MeSH
- Coloring Agents metabolism MeSH
- Basidiomycota classification enzymology isolation & purification metabolism MeSH
- Biodegradation, Environmental MeSH
- Wood microbiology MeSH
- Fungal Proteins metabolism MeSH
- Phylogeny MeSH
- Laccase metabolism MeSH
- Peroxidases metabolism MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Coloring Agents MeSH
- Fungal Proteins MeSH
- Laccase MeSH
- lignin peroxidase MeSH Browser
- Peroxidases MeSH
Thirty wood-rotting basidiomycetes, most of them causing white rot in wood, were isolated from fruiting bodies growing on decaying wood from the Sierra de Ayllón (Spain). The fungi were identified on the basis of their morphological characteristics and compared for their ability to decolorize Reactive Black 5 and Reactive Blue 38 (as model of azo and phthalocyanine type dyes, respectively) at 75 and 150 mg/L. Only eighteen fungal strains were able to grow on agar plates in the presence of the dyes and only three species (Calocera cornea, Lopharia spadicea, Polyporus alveolaris) decolorized efficiently both dyes at both concentrations. The ligninolytic activities, involved in decolorization dyes (laccases, lignin peroxidases, Mn-oxidizing peroxidases), were followed in glucose basal medium in the presence of enzyme inducers. The results indicate a high variability of the ligninolytic system within white-rot basidiomycetes. These fungal species and their enzymes can represent new alternatives for the study of new biological systems to degrade aromatic compounds causing environmental problems.
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