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1 Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Sevilla, 41012 Sevilla, Spain
2 State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, 100080 Beijing, PR China
3 Institute for Microbial Biotechnology and Metagenomics, University of the Western Cape, Bellville 7535, Cape Town, South Africa
4 Genencor International BV, Archimedesweg 30, 2333 CN Leiden, The Netherlands
5 Department of Infection, Immunity and Inflammation, University of Leicester, Leicester LE1 9HN, UK
Correspondence
M. C. Márquez
cmarquez{at}us.es
A Gram-positive, moderately halophilic bacterium, designated strain EN8dT, was isolated from sediment from Lake Erliannor in the Inner Mongolia Autonomous Region, China. Cells were facultatively anaerobic, rod-shaped and motile and did not display endospore formation. Isolate EN8dT grew in a complex medium supplemented with 0–20 % (w/v) marine salts (optimally at 5–7.5 %, w/v). Phylogenetic analysis based on 16S rRNA gene sequence comparisons showed that strain EN8dT was a member of the family Bacillaceae, belonging to a cluster with Thalassobacillus (96.3 % gene sequence similarity) and Halobacillus (95.0–96.0 %), albeit emerging as an independent lineage from members of these two genera. Strain EN8dT contained cell-wall peptidoglycan based on meso-diaminopimelic acid and possessed MK-7 as the major respiratory isoprenoid quinone. The major fatty acids were anteiso-C15 : 0 and anteiso-C17 : 0. The polar lipid pattern consisted of diphosphatidylglycerol, phosphatidylglycerol and an unidentified glycolipid. The DNA G+C content was 47.5 mol%. Strain EN8dT could be clearly differentiated from its phylogenetic neighbours on the basis of several phenotypic, genotypic and chemotaxonomic features. Therefore strain EN8dT is considered to represent a novel genus and species, for which the name Sediminibacillus halophilus gen. nov., sp. nov. is proposed. The type strain of Sediminibacillus halophilus is EN8dT (=CCM 7364T =CECT 7148T =CGMCC 1.6199T =DSM 18088T).
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