Haloferax larsenii
| Haloferax larsenii | |
|---|---|
| Scientific classification | |
| Domain: | Archaea |
| Phylum: | Euryarchaeota |
| Class: | Halobacteria |
| Order: | Halobacteriales |
| Family: | Halobacteriaceae |
| Genus: | Haloferax |
| Species: | H. larsenii |
| Binomial name | |
|
Haloferax larsenii Xue-Wei Xu et al. 2007 |
|
Haloferax larsenii is a gram-negative, aerobic, neutrophilic, extremely halophilic archaeon. It was named in honor of Professor Helge Larsen, who pioneered research on halophiles.
Haloferax larsenii was isolated from a solar saltern in the Zhoushan archipelago, Zhejiang Province, China. The researchers who discovered this species isolated three strains of H. larsenii. When this species was discovered, the genus Haloferax comprised Haloferax volcanii, H. mediterranei, H. denitrificans, H. gibbonsii, H. alexandrinus, H. lucentense, and H. sulfurifontis. Since this time, H. prahovense, H. elongans, and H. mucosum have been discovered, which totals to 11 species in the genus.
Like most species in Haloferax, H. larsenii was isolated from an extremely salty environment consisting of a mixture of mud and brine.
The species has been placed in a phylogeny:
Haloferax larsenii
Cells of H. larsenii are extremely pleomorphic and irregularly shaped with a diameter of 0.8-1.5 µm. Motility of cells has been noted, but flagella have not been observed by electron microscopy. The major polar lipids are the C20C20 derivatives of phosphatidylglycerol, phosphatidylglycerol phosphate methyl ester, diglycosyl glycerol diether, and sulfated diglycosyl diether. The DNA G+C content of DNA of the ZJ206T strain is 62.2±0.8 mol% as determined by thermal denaturation.
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