1887

Abstract

A novel extremely halophilic archaeon was isolated from Ezzemoul sabkha, Algeria. The strain, designated 5.1, was neutrophilic, motile and Gram-negative. At least 15 % (w/v) NaCl was required for growth. The isolate grew at pH 6.5–9.0, with optimum growth at pH 7.0–7.5. Mg was required for growth. Polar lipids were CC derivatives of phosphatidylglycerol and phosphatidylglycerol phosphate methyl ester, and phosphatidylglycerol sulfate and sulfated diglycosyl diether. The genomic DNA G+C content of strain 5.1 was 61.9 mol% ( ). Phylogenetic analysis based on comparison of 16S rRNA gene sequences revealed that strain 5.1 clustered with species. The results of DNA–DNA hybridization and biochemical tests allowed genotypic and phenotypic differentiation of strain 5.1 from other species. The name sp. nov. (type strain 5.1=CECT 7099=DSM 17463) is proposed.

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2006-07-01
2019-12-07
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