Використання сульфід- та тіосульфат-іонів пурпуровими несірковими бактеріями Rhodopseudomonas yavorovii
The usage of sulfide and thiosulfate ions by purple non-sulfur bacteria Rhodopseudomonas yavorovii

Summary/Abstract: The article covers the patterns of oxidation of sulfide and thiosulfate ions by bacteria Rhodopseudomonas yavorovii Ya-2016 under different cultivation conditions. In the environments with 1.4–5.6 мМ Na2S2O3, R. yavorovii Ya-2016 bacteria accumulated biomass of 1.4–1.6 g/l, which was higher than biomass (1.2-0.6 g/l) accumulated by the bacteria with the same concentrations of Na2S × 9H2O. The efficiency of oxidation of 1.4, 2.8, 5.6 мМ sulfide - and thiosulfateions as donors of electrons by the bacteria equaled 97.4, 42.6, 18.7 and 68.8, 28.0, 3.7%, relatively. As a result bacteri’ oxidation of 1.4 мМ hydrogen sulfide and sodium thiosulphate in the environment caused accumulation of 0.13– 1.30 мМ sulfate-ions, and the element sulfur became an intermediate metabolite in the environment with Na2S × 9H2O. R. yavorovii Ya-2016 bacteria are capable of using sulfate-ions as a single source of sulfate at increase in photptrophs. In the environment with 2.5 мМ sulfate-ions concentration the bacteria biomass was 1.4 g/l, the bacteria assimilated 17.7% of sulfates. Because purple non-sulfur bacteria R. yavorovii Ya-2016 are capable of using sulfide-ions as donors of electrons of anoxygenic photosynthesis and using sulfate-ions as a single source of sulfate, they could be successfully used in the technologies of remediating the environment from compounds of sulfur.

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