RT Journal Article SR Electronic(1) A1 Castillo, A. M. A1 Gutiérrez, M. C. 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 Halovivax ruber sp. nov., an extremely halophilic archaeon isolated from Lake Xilinhot, Inner Mongolia, China JF International Journal of Systematic and Evolutionary Microbiology, VO 57 IS 5 SP 1024 OP 1027 DO https://doi.org/10.1099/ijs.0.64899-0 PB Microbiology Society, SN 1466-5034, AB A Gram-negative, pleomorphic, extremely halophilic archaeon, designated strain XH-70T, was isolated from the saline Lake Xilinhot, in Inner Mongolia, China. It formed small (0.9–1.5 mm), red-pigmented, elevated colonies on agar medium. The strain required at least 2.5 M NaCl and 5 mM Mg2+ for growth. The 16S rRNA gene sequence analysis indicated that strain XH-70T belongs to the family Halobacteriaceae, showing 99.5 % similarity to the type strain of Halovivax asiaticus and 94.7 and 94.6 % similarity, respectively, to the type strains of Natronococcus amylolyticus and Natronococcus occultus. Polar lipid analysis supported the placement of strain XH-70T in the genus Halovivax. DNA–DNA hybridization studies (32 % with Halovivax asiaticus CGMCC 1.4248T), as well as biochemical and physiological characterization, allowed strain XH-70T to be differentiated from Halovivax asiaticus. A novel species, Halovivax ruber sp. nov., is therefore proposed to accommodate this strain. The type strain is XH-70T (=CGMCC 1.6204T=DSM 18193T=JCM 13892T)., UL https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijs.0.64899-0