1887

Abstract

Strain EJ-46, a novel pleomorphic, aerobic, extremely halophilic member of the was isolated from sediment of the saline Lake Ejinor, in Inner Mongolia, China. This organism was neutrophilic and required at least 15 % (2·5 M) NaCl for growth. MgCl was not required. The isolate was able to grow at pH 6·0–9·0. Optimum growth occurred in media containing 20 % (3·4 M) NaCl at pH 7·0–7·5. Polar lipid analysis revealed the presence of phosphatidylglycerol and phosphatidylglycerol phosphate methyl ester, derived from both CC and CC glycerol diethers. Four glycolipids were detected, one of which may be novel. The DNA G+C content was 60·3 mol%. 16S rRNA gene analysis revealed that strain EJ-46 was a member of the phylogenetic group defined by the family , and the highest 16S rRNA gene similarity values of 94·9 and 94·8 % were obtained with the haloalkaliphilic species of the genus , and , respectively. Based on the phenotypic, genotypic and phylogenetic analyses, it is proposed that the novel isolate should be classified as representing a new genus and species, for which the name gen. nov., sp. nov. is proposed. The type strain is EJ-46 (=CGMCC 1.4248=CECT 7098).

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2006-04-01
2024-03-28
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