Biodegradation of polycyclic aromatic hydrocarbons (PAHs) by white rot-fungus Pseudotrametes gibbosa isolated from the boreal forest in Northeast China

摘要

This study compared laccase production and the degradation of polycyclic aromatic hydrocarbons (PAHs) by?aboriginal?white rot-fungus?Pseudotrametes gibbosa(found in the northeast forest area of China) and?Pleurotus ostreatus?(which has been studied both domestically in China and overseas). The results showed that the laccase activity of?P. gibbosa?was 2841.3 U/l, which was 6 times more than that of?P. ostreatus?under the same culture conditions. The degradation of Anthracene and pyrene induced by?P. gibbosa?were 43.43 and 24.26%, while the removal efficiencies induced by?P. ostreatus?were only 30.12 and 18.76%. The results also showed a positive correlation between the PAHs degradation and laccase activity, and?Pseudotrametes gibbosa?had significant potential due to its higher laccase production and more potent degradation of PAHs. This study provides technical support for?pollution?amelioration using?aboriginal?white-rot fungus.