首页> 美国卫生研究院文献>Springer Open Choice >Desulfuribacillus alkaliarsenatis gen. nov. sp. nov. a deep-lineage obligately anaerobic dissimilatory sulfur and arsenate-reducing haloalkaliphilic representative of the order Bacillales from soda lakes
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Desulfuribacillus alkaliarsenatis gen. nov. sp. nov. a deep-lineage obligately anaerobic dissimilatory sulfur and arsenate-reducing haloalkaliphilic representative of the order Bacillales from soda lakes

机译:碱度脱硫杆菌。十一月sp。十一月是苏打湖中芽孢杆菌的一种深层谱系专为厌氧异化硫和砷的还原卤化碱的嗜盐代表

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摘要

An anaerobic enrichment culture inoculated with a sample of sediments from soda lakes of the Kulunda Steppe with elemental sulfur as electron acceptor and formate as electron donor at pH 10 and moderate salinity inoculated with sediments from soda lakes in Kulunda Steppe (Altai, Russia) resulted in the domination of a Gram-positive, spore-forming bacterium strain AHT28. The isolate is an obligate anaerobe capable of respiratory growth using elemental sulfur, thiosulfate (incomplete reduction) and arsenate as electron acceptor with H2, formate, pyruvate and lactate as electron donor. Growth was possible within a pH range from 9 to 10.5 (optimum at pH 10) and a salt concentration at pH 10 from 0.2 to 2 M total Na+ (optimum at 0.6 M). According to the phylogenetic analysis, strain AHT28 represents a deep independent lineage within the order Bacillales with a maximum of 90 % 16S rRNA gene similarity to its closest cultured representatives. On the basis of its distinct phenotype and phylogeny, the novel haloalkaliphilic anaerobe is suggested as a new genus and species, Desulfuribacillus alkaliarsenatis (type strain AHT28T = DSM24608T = UNIQEM U855T).Electronic supplementary materialThe online version of this article (doi:10.1007/s00792-012-0459-7) contains supplementary material, which is available to authorized users.
机译:在pH为10的条件下,用库仑达草原苏打湖中的元素硫作为电子受体和甲酸盐作为电子供体接种了厌氧富集培养物,并用中等盐度接种了库伦达草原(俄罗斯阿尔泰)的苏打湖中的盐分。革兰氏阳性,孢子形成细菌菌株AHT28的优势。该分离物是专性厌氧菌,能够使用元素硫,硫代硫酸盐(不完全还原)和砷酸盐作为电子受体,并以H2,甲酸,丙酮酸和乳酸作为电子供体,进行呼吸生长。在9至10.5的pH范围内生长是可能的(最适pH值为10),而在pH 10的盐浓度为0.2〜2 M总Na + (最适0.6 M)。根据系统发育分析,菌株AHT28代表了芽孢杆菌内的一个深层独立谱系,与其最接近的培养代表最大90%的16S rRNA基因相似性。根据其独特的表型和系统发育,建议将新的嗜盐厌氧厌氧菌作为一种新属和新种-碱解硫杆菌(类型菌株AHT28 T = DSM24608 T == UNIQEM U855 T )。电子补充材料本文的在线版本(doi:10.1007 / s00792-012-0459-7)包含补充材料,授权用户可以使用。

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