RT Journal Article SR Electronic(1) A1 Gutiérrez, M. C. A1 Castillo, A. M. A1 Kamekura, M. A1 Xue, Y. A1 Ma, Y. A1 Cowan, D. A. A1 Jones, B. E. A1 Grant, W. D. A1 Ventosa, A.YR 2007 T1 Halopiger xanaduensis gen. nov., sp. nov., an extremely halophilic archaeon isolated from saline Lake Shangmatala in Inner Mongolia, China JF International Journal of Systematic and Evolutionary Microbiology, VO 57 IS 7 SP 1402 OP 1407 DO https://doi.org/10.1099/ijs.0.65001-0 PB Microbiology Society, SN 1466-5034, AB Strain SH-6T was isolated from the sediment of Lake Shangmatala, a saline lake in Inner Mongolia (China). Cells were pleomorphic. The organism was neutrophilic and required at least 2.5 M (15 %) NaCl, but not MgCl2, for growth; optimal growth occurred at 4.3 M (25 %) NaCl. The G+C content of its DNA was 63.1 mol%. 16S rRNA gene sequence analysis revealed that strain SH-6T is a member of the family Halobacteriaceae, but there was a low level of similarity with other members of this family. Highest sequence similarity (94.6 %) was obtained with the 16S rRNA genes of the type strains of Natronolimnobius innermongolicus and Natronolimnobius baerhuensis. Polar lipid analyses revealed that strain SH-6T contains phosphatidylglycerol and phosphatidylglyceromethylphosphate, derived from both C20C20 and C20C25 glycerol diethers together with the glycolipid S2-DGD-1. On the basis of the data obtained, the new isolate could not be classified in any recognized genus. Strain SH-6T is thus considered to represent a novel species in a new genus within the family Halobacteriaceae, order Halobacteriales, for which the name Halopiger xanaduensis gen. nov., sp. nov. is proposed. The type strain of Halopiger xanaduensis is SH-6T (=CECT 7173T=CGMCC 1.6379T=JCM 14033T)., UL https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijs.0.65001-0