The fungal ability to biotransform xenobiotics had received attention due to their dominance, ubiquity and different pathways that detoxificate aromatic hydrocarbons. The filamentous fungi Aspergillus flavus and Paecilomyces farinosus showed a significant degradation activity on benzo[a]pyrene with and without C16 as cosubstrate. 14CO2, 14C-volatile organic, 14C-extractable, 14C-nonextractable, 14C-biomass and 14C-aqueous fractions were determined with [7, 10]14C-BaP assays, with A. flavus, Cladosporium cladosporioides, Gliocladium viride, P. farinosus and Talaromyces rotundus. However, the activity of A. flavusand P. farinosus were higher. These non-ligninolytic fungi degraded BaP by cometabolism in C16 presence, were adapted to toxicants and dominant in polluted habitats, so they could play an important role in self- bioremediation processes.
Key words: Benzo[a]pyrene biodegradation, cometabolism, mycoremediation,PAHs mixture, polluted sites, soil filamentous fungi.
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