Degradation of 2,4-dichlorophenol and pentachlorophenol by two brown rot fungi |
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Authors: | Kristina Fahr Heinz-Georg Wetzstein Roland Grey Dietmar Schlosser |
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Affiliation: | Friedrich-Schiller-University of Jena, Institute of Microbiology, Germany. |
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Abstract: | Wheat straw cultures of the brown rot fungi Gloeophyllum striatum and G. trabeum degraded 2,4-dichlorophenol and pentachorophenol. Up to 54% and 27% 14CO2, respectively, were liberated from uniformly 14C-labeled substrates within 6 weeks. Under identical conditions Trametes versicolor, a typical white rot species employed as reference, evolved up to 42% and 43% 14CO2 and expressed high activities of laccase, manganese peroxidase, and manganese-independent peroxidase. No such activity could be detected in straw or liquid cultures of Gloeophyllum. Moreover, G. striatum degraded both chlorophenols most efficiently under non-cometabolic conditions, i.e. on a defined mineral medium lacking sources of carbon, nitrogen and phosphate. |
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Keywords: | Brown rot fungus Gloeophyllum Degradation 2,4-Dichlorophenol Pentachlorophenol Ligninolytic enzyme |
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