Proteomic insight on the polychlorinated biphenyl degrading mechanism of Pleurotus pulmonarius LBM 105
| Autor: | María Isabel Fonseca, Cinthya Alicia Marcela Lopez, Adriana Elizabet Alvarenga, Anibal Sebastian Chelaliche, Pedro Darío Zapata |
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| Rok vydání: | 2021 |
| Předmět: |
Proteomics
Environmental Engineering Health Toxicology and Mutagenesis 0208 environmental biotechnology Dehydrogenase 02 engineering and technology 010501 environmental sciences Pleurotus medicine.disease_cause 01 natural sciences chemistry.chemical_compound medicine Environmental Chemistry 0105 earth and related environmental sciences chemistry.chemical_classification Laccase biology Public Health Environmental and Occupational Health Pleurotus pulmonarius General Medicine General Chemistry Metabolism biology.organism_classification Polychlorinated Biphenyls Pollution 020801 environmental engineering Biodegradation Environmental Enzyme chemistry Biochemistry Xenobiotic Function (biology) Oxidative stress |
| Zdroj: | Chemosphere. 265:129093 |
| ISSN: | 0045-6535 |
| Popis: | White-rot fungi are well known bioremediation agents capable of removing recalcitrant xenobiotics. However, the molecular mechanism involved in this process is not well understood. The aim of the present study was to compare the proteomic profiles of Pleurotus pulmonarius LBM 105 in presence and absence of a mixture of polychlorinated biphenyls. Cultures of the fungus were spiked with a mixture of Aroclors and cultivated for 28 days. This strain achieved a peak of PCBs-removal of 65.50 ± 8.09% after 21 days. The ecotoxicological assays showed a toxicity reduction of 46.47%. Based on these findings, a proteomic study was carried out and it was proven that the oxidative metabolism was highly affected. Two proteins that have a function at the transcriptional level and related to the oxidative metabolism, the glyceraldehyde-3-phosphate dehydrogenase and the basal transcription factor 3, presented an increase in their quantity in PCBs presence. Several oxidases and reductases were highly induced, presenting the short chain reductases, aldo/keto reductases, laccases and versatile peroxidases as the enzymes with the most notorious changes. These results indicate a complex response of the fungal metabolism towards these pollutants, which includes a transcriptional response to the oxidative stress and a modification of the intra- and extra-cellular enzymatic profile. |
| Databáze: | OpenAIRE |
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