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Int J Syst Evol Microbiol 55 (2005), 2539-2542; DOI  10.1099/ijs.0.63761-0
© 2005 International Union of Microbiological Societies

Haloterrigena saccharevitans sp. nov., an extremely halophilic archaeon from Xin-Jiang, China

Xue-Wei Xu1,2, Shuang-Jiang Liu2, Dilbar Tohty3, Aharon Oren4, Min Wu1 and Pei-Jin Zhou2

1 College of Life Sciences, Zhejiang University, Hangzhou 310027, P. R. China
2 Institute of Microbiology, Chinese Academy of Sciences, ZhongGuanCun, Haidian, Beijing 100080, P. R. China
3 Department of Biology, Xinjiang Normal University, Urumqi 830054, P. R. China
4 Institute of Life Sciences and the Moshe Shilo Minerva Center for Marine Biogeochemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel

Correspondence
Pei-Jin Zhou
zhou{at}sun.im.ac.cn

A novel extremely halophilic strain, isolated from Aibi salt lake, Xin-Jiang, China, was subjected to polyphasic taxonomic characterization. This strain, designated AB14T, is neutrophilic, motile and requires at least 10 % (w/v) NaCl for growth. Strain AB14T grows at 24–58 °C, with optimal growth at 42–45 °C. Mg2+ is not required, but growth is observed in MgCl2 concentrations as high as 1·0 M. Strain AB14T possesses the diphytanyl (C20C20) and phytanyl-sesterterpanyl diether (C20C25) derivatives of phosphatidylglycerol, phosphatidylglycerol phosphate methyl ester and mannose-2,6 disulfate 1->2 glucose-glycerol diether. The genomic DNA G+C content is 66·6 mol%. The 16S rRNA gene sequence similarity values of strain AB14T with its nearest phylogenetic neighbours (Haloterrigena thermotolerans and Haloterrigena turkmenica) are 98·6 and 96·0 %, respectively. DNA–DNA hybridization revealed 54 % relatedness between strain AB14T and Haloterrigena thermotolerans JCM 11050T and 21 % between strain AB14T and Haloterrigena turkmenica JCM 9101T. It is therefore proposed that strain AB14T represents a novel species, for which the name Haloterrigena saccharevitans sp. nov. is proposed. The type strain is AB14T (=AS 1.3730T=JCM 12889T).

Abbreviations: PG, phosphatidylglycerol; PGP-Me, phosphatidylglycerol phosphate methyl ester; S2-DGD, mannose-2,6 disulfate 1->2 glucose-glycerol diether

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain AB14T is AY820137.

A thin-layer chromatogram of lipids from strain AB14T and Haloterrigena thermotolerans JCM 11050T is available as supplementary material in IJSEM Online.






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