Halogranum rubrum gen. nov., sp. nov., a halophilic archaeon isolated from a marine solar saltern

Heng Lin Cui*, Xia Gao, Fang Fang Sun, Ying Dong, Xue Wei Xu, Yu Guang Zhou, Hong Can Liu, Aharon Oren, Pei Jin Zhou

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


Two extremely halophilic archaea, strains RO2-11T and HO2-1, were isolated from two Chinese marine solar salterns, Rudong solar saltern and Haimen solar saltern, respectively. Cells of the two strains were polymorphic and Gram-stain-negative; colonies were red-pigmented. The two strains grew at NaCl concentrations of 2.6-4.3 M (optimum 3.9 M) and required at least 0.1 M Mg2+ for growth. They were able to grow over a pH range of 6.0-8.0 and a temperature range of 20-50 °C, with optimal pH of 7.5 and optimal temperature of 37 °C. The major polar lipids of strain RO2-11T and strain HO2-1 were phosphatidylglycerol, phosphatidylglycerol phosphate methyl ester and three glycolipids, two of them chromatographically identical to S-DGD-1 and DGD-1, the third unidentified. The 16S rRNA gene sequence similarity of strain RO2-11T and strain HO2-1 was 99.3% and highest sequence similarity with the closest relative (Haloferax larsenii) was 91.4 %. Based on the data obtained, the two isolates could not be classified in any recognized genus of the family Halobacteriaceae. Strain RO2-11T and strain HO2-1 are thus considered to represent a novel species of a new genus within the family Halobacteriaceae, for which the name Halogranum rubrum gen. nov., sp. nov. is proposed. The type strain is RO2-11T (=CGMCC 1.7738T =JCM 15772T).

Original languageAmerican English
Pages (from-to)1366-1371
Number of pages6
JournalInternational Journal of Systematic and Evolutionary Microbiology
Issue number6
StatePublished - Jun 2010


Dive into the research topics of 'Halogranum rubrum gen. nov., sp. nov., a halophilic archaeon isolated from a marine solar saltern'. Together they form a unique fingerprint.

Cite this