Prospects for the Use of Xylotrophic Fungi Pleurotus ostreatus Florida and Schizophyllum commune for Mycoremediation of Soils Contaminated with Oil Hydrocarbons and Surfactants
| Autor: | E. V. Dubrovskaya, Vyacheslav S. Grinev, Olga Turkovskaya |
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| Rok vydání: | 2021 |
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| Zdroj: | Biotekhnologiya. 37:108-116 |
| ISSN: | 2500-2341 0234-2758 |
| Popis: | A model system for the successful mycoremediation of soil contaminated with real oil pollution has been developed on the basis of Pleurotus ostreatus Florida grown on a natural substrate (husk, straw). It was shown that under these conditions, mycoremediation was observed during 2 weeks at 24° C with oil contamination of up to 22 g/kg and inoculum/soil ratio of 1:10. The solid-phase P. ostreatus inoculums grown on straw induced the production of highly active ligninolytic enzymes, laccases and hybrid peroxidases. This allows us to recommend this inoculum for the development of technologies for mycoremediation of soils contaminated with mixtures of pollutants with a high content of aromatic fractions. Based on the solid-phase inoculum of Schizophyllum commune grown on a natural substrate (pine sawdust), a semi-submerged model system was developed, which can be repeatedly used for the degradation of surfactants in the soil. In this case, sawdust can be considered not only as a source of carbon and energy for the fungus, but also as a kind of natural carrier for its immobilization. This model system based on S. commune grown on a natural substrate can also be recommended for the development of ecological biotechnologies on its basis. Key words: mycoremediation, basidiomycetes, oil, surfactants, ligninolytic enzymes This work was carried out and funded within the framework of theme No. 121031700141-7 (IBPPM RAS) with partial support of the Russian Science Foundation (project no. 16-14-00081 "Fungi for Environmentally Significant Biotechnologies") (degradation of surfactants) and of the Russian Foundation for Basic Research (project no. 18-29-05062 "Development of Scientific Foundations of a New Integrated Biotechnology for Oil Spill Response in the Arid Climate Zone") (mycoremediation of oil-contaminated soil). |
| Databáze: | OpenAIRE |
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