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Registration Number

0225U000106, (0120U101771) , R & D reports

Title

Adaptations of microorganisms that transform sulfur compounds in nature to the influence of chemical contaminants as stress factors.

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Адаптації мікроорганізмів, які перетворюють сполуки сульфуру у природі, до впливу хімічних забруднень як стресових чинників.

Head

Hnatush Svitlana Oleksijivna, Кандидат біологічних наук

Registration Date

05-01-2025

Organization

Ivan Franko National University of Lviv

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Investigation of structural and physiological adaptations that ensure the resistance of microorganisms of the sulfur cycle of technogenically modified ecosystems to the action of stress factors of a chemical nature, and establish the participation of bacteria in the transformation of toxic compounds with evaluating the possibility of their application for the development of biotechnologies of complex environment purification with simultaneous hydrogen production or current generation.

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 The regularities of sulfate, nitrate, and nitrite ions reduction by strains Desulfovibrio sp. isolated from Yavorivske Lake under the influence of Cr(VI) were established. In the medium with SO42-, NO3- or NO2- and Cr(VI) bacteria reduced NO3- or NO2- 2.2−2.4 times more than SO42- and 1.1−1.2 times more than Cr(VI). Under the influence of Mg, Zn and Ni compounds the efficiency of SO42-, NO3- or NO2- reduction by bacteria decreased on 16.2–54.8 %. Soil contamination with a fluorosynthetic foaming agent led to increase in the quantity of nitrogen fixing bacteria, actinobacteria, yeasts and mold fungi 1.2–2.6 times and to decrease in the quantity of ammonifiers and cellulose degrading microorganisms 1.7–5.0 times compared to the control. From this soil the strain Achromobacter sp. AF-02, capable of phosphate mobilization and destruction of organofluorine compounds, was isolated and identified based on the results of the nucleotide sequence of the 16S rRNA gene analysis. Based on the obtained data the biotechnological scheme for complex environment remediation was developed with the participation of bacteria strains Desulfovibrio sp. and Achromobacter sp. adapted to chemical pollution, capable of transforming sulfur, nitrogen, chromium, phosphorus and fluorine compounds with high efficiency. The implementation of this scheme makes it possible to clean up polluted ecotopes and thereby improve the ecological state of the environment.

Product Description

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Halushka Andrii A.
Zvir Halyna I.
Komplikevych Solomiia Ya.
Maslovska Olha D.
Moroz Oksana M.
Peretiatko Taras B.
Yavorska Halyna V.