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Georgenia halophila sp nov., a halophilic actinobacterium isolated from a salt lake

文献类型： 外文期刊

作者： Tang, Shu-Kun 1 ; Wang, Yun 3 ; Lee, Jae-Chan 4 ; Lou, Kai 3 ; Park, Dong-Jin 4 ; Kim, Chang-Jin 4 ; Li, Wen-Jun 1 ;

作者机构： 1.Yunnan Univ, Key Lab Microbial Resources, Minist Educ, Kunming 650091, Peoples R China

2.Yunnan Univ, Lab Conservat & Utilizat Bioresources, Yunnan Inst Microbiol, Kunming 650091, Peoples R China

3.Xinjiang Acad Agr Sci, Xinjiang Inst Microbiol, Xinjiang 830091, Peoples R China

4.KRIBB, Funct Metabolite Res Ctr, Taejon 305806, South Korea

关键词： DNA;lysine: 70-54-2;alanine: 302-72-7;sodium chloride: 7647-14-5;peptidoglycan;glutamine: 6899-04-3;phosphatidylglycerol;phosphatidylinositol;phosphatidylinositol mannoside;fatty acid;diphosphatidylglycerol;menaquinone 8(H-4);Gene Name;Georgenia halophila 16S rRNA gene [Bacteria];salt lake;phenotypic differentiation;chemotaxonomic property

期刊名称：INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY （ 影响因子：2.747； 五年影响因子：2.889 ）

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收录情况： SCI

摘要： A Gram-stain-positive actinobacterium, designated strain YIM 93316(T), was isolated from a salt lake in Xinjiang Province, north-west China, and was subjected to a polyphasic taxonomic study. The isolate grew at 10-45 degrees C, at pH 6-9 and in the presence of 1-15% (w/v) NaCl, but no growth was observed in the absence of NaCl. The cell-wall diamino acid contained alanine, glutamine and lysine with peptidoglycan type A4 alpha. Polar lipids contained diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol, phosphatidylinositol mannosides, an unknown glycolipid and an unknown phospholipid. The predominant menaquinone was MK-8(H-4). The major fatty acids were anteiso-C-15:0 and anteiso-C-15:1. The DNA G+C content of strain YIM 93316(T) was 70.1 mol%. Chemotaxonomic properties supported the affiliation of strain YIM 93316(T) to the genus Georgenia, and this was supported by phylogenetic analysis based on 16S rRNA gene sequences. Levels of 16S rRNA gene sequence similarity between strain YIM 93316(T) and Georgenia thermotolerans TT02-04(T), Georgenia ruanii YIM 004(T) and Georgenia muralis 1A-C-T were 96.6, 96.5 and 96.3%, respectively. Data from fatty acid, physiological and biochemical tests allowed the clear phenotypic differentiation of strain YIM 93316(T) from recognized members of the genus Georgenia. On the basis of evidence from the present polyphasic study, strain YIM 93316(T) is considered to represent a novel species of the genus Georgenia, for which the name Georgenia halophila sp. nov. is proposed. The type strain is YIM 93316(T) (=DSM 21365(T) =CCTCC AB 208144(T)).

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