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首页> 外文期刊>Biosystems Diversity >Reduction of sulfur and oxidized forms of nitrogen by bacteria of Desulfuromonas sp., isolated from Yavorivske Lake, under the influence of ferrum citrate
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Reduction of sulfur and oxidized forms of nitrogen by bacteria of Desulfuromonas sp., isolated from Yavorivske Lake, under the influence of ferrum citrate

机译：通过脱硫菌的细菌减少脱硫的氮和氧化形式的氮。，来自盐酸盐的影响

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摘要

Technogenic reservoirs mainly contain several possible electron acceptors of anaerobic respiration, many of which are dangerous to the environment. The succession of their reduction (and thus detoxification) by sulfur reducing bacteria is not yet sufficiently studied. We investigated the influence of ferrum (III) citrate, present in the cultivation medium, on the reduction of sulfur, nitrate and nitrite ions by sulfur reducing bacteria Desulfuromonas acetoxidans IMV B-7384, Desulfuromonas sp. Yavor-5 and Desulfuromonas sp. Yavor-7, isolated from Yavorivske Lake. It was established that ferrum (III) citrate inhibits the biomass accumulation and hydrogen sulfide production by bacteria of Desulfuromonas sp. after simultaneous addition to the medium of 3.47 mM S0 and 1.74–10.41 mM ferrum (III) citrate, as compared with growth and hydrogen sulfide production by bacteria in the medium with only sulfur. In the medium with the same initial content (3.47 mM) S0 and ferrum (III) citrate bacteria produced ferrum (II) ions at concentrations 3.5–3.9 times higher than that of hydrogen sulfide. Ferrum (III) citrate inhibits the biomass accumulation, the nitrate or nitrite ions reduction and the ammonium ions production by bacteria of Desulfuromonas sp. after simultaneous addition to the medium of 3.47 mM NaNO3 or NaNO2 and 1.74–10.41 mM ferrum (III) citrate. In the medium with the same initial content (3.47 mM) NaNO3 and ferrum (III) citrate, bacteria produced ammonium ions at concentrations in 1.1 times higher than that of ferrum (II) ions. In the medium with the same initial content (3.47 mM) NaNO2 and ferrum (III) citrate, bacteria reduced 1.5–1.6 times more ferrum (III) than nitrite ions with production of ferrum (II) ions at concentrations 1.7 times higher than that of ammonium ions. The process of nitrate reduction carried out by bacteria of Desulfuromonas genus was less sensitive to the negative influence of ferrum (III) citrate, compared to the process of nitrite ions reduction. When the reduction of nitrate ions by bacteria in the presence of 1.74–10.41 mM ferrum (III) citrate decreased by 1.4–2.2 times, then the reduction of nitrite ions decreased by 1.8–3.2 times compared to their reduction in media with only NaNO3 or NaNO2, respectively. Although the reduction of ferrum (III) by cells in media with 3.47 mM S0, NaNO3 or NaNO2 and 1.74–10.41 mM ferrum (III) citrate decreased by 1.6–2.7, 1.6–2.7 and 1.1–2.2 times, respectively, compared to the reduction in medium with only ferrum (III) citrate, the investigated strains of bacteria were resistant to high concentrations of trivalent ferrum compounds and can therefore can be used in technologies of complex purification of environments polluted by heavy metal and nitrogen compounds.
机译：介绍储层主要含有几种可能的厌氧呼吸的电子受体，其中许多对环境有危险。硫磺还原细菌的减少（和因此排毒）的继承尚未充分研究。我们调查了柠檬酸盐（III）柠檬酸盐的影响，在培养基中，通过硫磺，硝酸盐和亚硝酸盐离子的还原通过硫氧化物IMV B-7384，Desulfuromonas Sp减少。 Yavor-5和Desurfuromonas sp。 yover-7，与yavorivske湖隔离。建立了铁酸盐（III）柠檬酸盐抑制了脱硫菌的细菌的生物质积累和硫化氢产生。与仅硫的细菌的细菌相比，柠檬酸盐（III）柠檬酸盐的培养基同时除了3.47mm S0和1.74-10.41mm柠檬酸盐之后。在具有相同初始含量（3.47mm）的介质中，柠檬酸柠檬酸盐细菌产生的浓度为浓度的铁霉素（II）离子比硫化氢高出3.5-3.9倍。铁酸盐抑制生物质积聚，硝酸盐或亚硝酸盐离子和铵离子的脱硫菌的产生。在同时加入3.47mm纳米3或纳米2和1.74-10.41mm铁酸盐（III）柠檬酸盐后。在具有相同初始含量（3.47mm）纳米3和铁柠檬（III）柠檬酸盐的培养基中，细菌在浓度下产生的铵离子在比铁霉（II）离子高的1.1倍以上。在具有相同初始含量（3.47mm）纳米2和铁柠檬（III）的培养基中，细菌比亚硝酸盐离子降低1.5-1.6倍，浓度为浓度的铁霉素（II）离子1.7倍高1.7倍铵离子。与亚硝酸盐离子的过程相比，通过脱硫呋喃基Gacteria的硝酸盐的硝酸盐的过程对铁霉素（III）柠檬酸盐的负影响敏感。当柠檬酸盐存在1.74-10.41mm的细菌的硝酸根离子减少1.4-2.2倍时，亚硝酸盐离子的减少与仅纳米3的培养基还原相比减少1.8-3.2倍。纳米2分别。虽然培养基中的细胞减少了3.47mm S0，纳米3或纳米2和1.74-10.41mm铁酸盐的细胞分别减少1.6-2.7，1.6-2.7和1.1-2.2倍。只有柠檬酸盐（III）柠檬酸盐的培养基，对细菌的调查菌株耐高浓度的三价铁霉素化合物，因此可以用于复合物纯化的重金属和氮化合物污染的环境的技术。

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