1. Description of Halegenticoccus soli gen. nov., sp. nov., a halophilic archaeon isolated from a soil sample of Ebi lake.
- Author
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Liu, Bing-Bing, Narsing Rao, Manik Prabhu, Yin, Xiao-Qing, Li, Xin, Salam, Nimaichand, Zhang, Yao, Alkhalifah, Dalal Hussien M., Hozzein, Wael N., and Li, Wen-Jun
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MOUNTAIN soils ,SOIL sampling ,LAKES ,GLYCOLIPIDS ,RIBOSOMAL RNA ,NUCLEIC acid hybridization ,LIPIDS - Abstract
Two extreme halophilic archaeal strains, SYSUA9-0
T and SYSUA9-1, were isolated from Ebi lake of Xinjiang, China. The colonies were Gram-negative, coccoid, and non-motile. Strains were aerobic and grew at 25–50 °C (optimum at 37 °C), in the presence of 10–35% (w/v) NaCl (optimum at 20–22%), and pH 6.0–8.0 (optimum at 7.0). The 16S rRNA gene sequence result revealed that the two strains were closely related to Haloprofundus marisrubri SB9T (92.7% similarity). The DNA–DNA hybridization value (97% ± 1%) suggested that SYSUA9-0T and SYSUA9-1 were similar; however, their sequence similarities with other archaeal members suggested that they were novel candidates. The genomic G + C content of SYSUA9-0T was 66.9%. The average nucleotide identity value between SYSU A9-0T and Haloprofundus marisrubri SB9T was 69.1%, which was far below the cutoff value (95–96%) proposed to define the species boundary. The polar lipids were phosphatidylglycerol (PG), phosphatidylglycerolphosphate methylester (PGP-Me), sulfated mannosyl glucosyl diether, mannosyl glucosyldiether, and four unidentified glycolipids. Phenotypic, chemotaxonomic and comparative genome analysis suggested that SYSU A9-0T and SYSU A9-1 represent a novel species of a new genus within the family Haloferacaceae, for which the name Halegenticoccus soli gen. nov., sp. nov., is proposed. The type strain is SYAUA9-0T (= KCTC4241T = CGMCC 1.15765T ). [ABSTRACT FROM AUTHOR]- Published
- 2019
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