Comparative study of single cultures and a consortium of white rot fungi for polychlorinated biphenyls treatment

BENITEZ, SILVANA FLORENCIA; SADAÑOSKI, MARCELA ALEJANDRA; JUAN ERNESTO VELAZQUEZ; ZAPATA, PEDRO DARÍO; FONSECA, MARÍA ISABEL

JOURNAL OF APPLIED MICROBIOLOGY

WILEY-BLACKWELL PUBLISHING, INC

Lugar: Londres; Año: 2021

1364-5072

Aims: To evaluate the mycoremediation of polychlorinated biphenyls (PCBs) by either single cultures or binary consortia of Pleurotus pulmonarius LBM 105 and Trametes sanguinea LBM 023. Methods and Results: PCBs tolerance, removal capacity, toxicity reduction and ligninolytic enzyme expression were assessed when growing single culture and binary consortium of fungus in 217 mg l−1 of a technical mixture of Aroclor 1242, 1254 and 1260 in transformer oil. A decrease in tolerance and variation in ligninolytic enzyme secretion were observed to fungal dual culture in PCBs solid media. P. pulmonarius LBM 105 mono27 culture was able to remove up to 95.4 % of PCBs, while binary consortium and T. sanguinea LBM 023 could biodegrade about 55 % after 24 d. Significant detoxification levels were detected in all treatments by biosorption mechanism.Conclusions: P. pulmonarius LBM 105 in single culture had the best performance regarding PCBs biodegradation and toxicity reduction. Ligninolytic enzyme secretion changed in co-culture