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Int J Syst Evol Microbiol 57 (2007), 1069-1072; DOI  10.1099/ijs.0.64921-0
© 2007 International Union of Microbiological Societies

Halorubrum arcis sp. nov., an extremely halophilic archaeon isolated from a saline lake on the Qinghai–Tibet Plateau, China

Xue-Wei Xu1, Yue-Hong Wu1, Hui-bin Zhang2 and Min Wu1

1 College of Life Sciences, Zhejiang University, Hangzhou 310058, People's Republic of China
2 Altun Mountain National Nature Reserve Administrative, Kuerle 841000, People's Republic of China

Correspondence
Min Wu
wumin{at}zju.edu.cn

A Gram-negative, aerobic, neutrophilic and extremely halophilic archaeon (strain AJ201T), isolated from Ayakekum salt lake on the Qinghai–Tibet Plateau, was investigated by a polyphasic approach. The DNA G+C content of strain AJ201T was 65.7 mol%. The major polar lipid profile and phylogenetic analysis based on 16S rRNA gene sequences supported the allocation of the strain to the genus Halorubrum. The results of DNA–DNA hybridizations and physiological and biochemical tests allowed genotypic and phenotypic differentiation of strain AJ201T from closely related species. Therefore, strain AJ201T represents a novel species of the genus Halorubrum, for which the name Halorubrum arcis sp. nov. is proposed. The type strain is strain AJ201T (=CGMCC 1.5343T=JCM 13916T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain AJ201T is DQ355793.

Results of one-dimensional TLC of polar lipids of Hrr. saccharovorum CGMCC 1.2147T and strain AJ201T are available as supplementary material in IJSEM Online.




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