Haloterrigena daqingensis sp. nov., an extremely haloalkaliphilic archaeon isolated from a saline-alkaline soil
文献类型： 外文期刊
作者： Wang, Shuang 1 ; Yang, Qian 1 ; Liu, Zhi-Hua 1 ; Sun, Lei 2 ; Wei, Dan 2 ; Zhang, Jun-Zheng 1 ; Song, Jin-Zhu 1 ; Yuan, H 1 ;
作者机构： 1.Harbin Inst Technol, Dept Life Sci & Engn, Harbin 150001, Peoples R China
2.Heilongjiang Acad Agr Sci, Soil Fertilizer & Environm Energy Inst, Harbin 150086, Peoples R China
3.Heilongjiang Acad Sci, Nat & Ecol Inst, Harbin 150040, Peoples R China
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 ）
ISSN： 1466-5026
年卷期： 2010 年 60 卷
页码：
收录情况： SCI
摘要： A haloalkaliphilic archaeon, strain JX313(T), was isolated from a saline-alkaline soil from Daqing, Heilongjiang Province, China. Its morphological; physiological and biochemical features and 16S rRNA gene sequence were determined. Colonies of the strain were orange-red and cells were non-motile cocci and Gram-stain-variable. The strain required at least 1.7 M NaCl for growth, with optimal growth occurring in 2.0-2.5 M NaCl. Growth was observed at 20-50 degrees C and pH 8.0-10.5, with optimal growth at 35 degrees C and pH 10.0. The G+C content of its genomic DNA was 59.3 mol%. Phylogenetic analysis of 16S rRNA gene sequences showed that strain JX313(T) is associated with the genera Haloterrigena and Natrinema and is most closely related to Haloterrigena sauna XH-65(T) (96.20% sequence similarity) and Haloterrigena hispanica FP1(T) (96.2%). DNA DNA hybridization experiments revealed that the relatedness of strain JX313(T) to type strains of related species of the genus Haloterrigena or Natrinema was less than 50%. Furthermore, the cellular polar lipids of strain JX313(T), identified as phosphatidylglycerol, phosphatidylglycerol phosphate methyl ester and mannose-2,6-disulfate (1 -> 2)-glucose glycerol diether (S-2-DGD), were consistent with the polar lipid characteristics of the genus Haloterrigena. Therefore, phylogenetic analysis, phenotypic assessment and chemotaxonomic data showed that JX313(T) represents a novel species within the genus Haloterrigena, for which the name Haloterrigena daqingensis sp. nov. is proposed. The type strain is JX313(T) (=CGMCC 1.8909(T) =NBRC 105739(T)).
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