title: Oceanobacillus iheyensis gen. nov., sp. nov., a deep-sea extremely halotolerant and alkaliphilic species isolated from a depth of 1050 m on the Iheya Ridge.
abstract: An extremely halotolerant and alkaliphilic bacterium was isolated previously from deep-sea sediment collected at a depth of 1050 m on the Iheya Ridge. The strain, designated HTE831 (JCM 11309, DSM 14371), was Gram-positive, strictly aerobic, rod-shaped, motile by peritrichous flagella, and spore-forming. Strain HTE831 grew at salinities of 0-21% (w/v) NaCl at pH 7.5 and 0-18% at pH 9.5. The optimum concentration of NaCl for growth was 3% at both pH 7.5 and 9.5. The G+C content of its DNA was 35.8%. Low level (12-30%) of DNA-DNA relatedness between strain HTE831 and the species of these genera was found, indicating that HTE831 could not be classified as a member of a new species belonging to known genera. Based on phylogenetic analysis using 16S rDNA sequencing, chemotaxonomy, and the physiology of strain HTE831, it is proposed that this organism is a member of a new species in a new genus, for which the name Oceanobacillus iheyensis is proposed.
authors.affiliation: Microbial Genome Research Group, DEEPSTAR, Japan Marine Science and Technology Center, 2-15 Natsushima, 237-0061, Yokosuka, Japan.
authors.forename: J
authors.initials: J
authors.lastname: Lu
authors.forename: Y
authors.initials: Y
authors.lastname: Nogi
authors.forename: H
authors.initials: H
authors.lastname: Takami
mesh_terms: D001482:Base Composition; D003470:Culture Media; D016680:Genome, Bacterial; D016946:Gram-Negative Aerobic Rods and Cocci / Q000145:classification* / Q000235:genetics; D006217:Halobacterium; D006863:Hydrogen-Ion Concentration; D007564:Japan; D008969:Molecular Sequence Data; D010802:Phylogeny; D012329:RNA, Bacterial / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012623:Seawater / Q000382:microbiology*; D012965:Sodium Chloride; D013045:Species Specificity; D013170:Spores; D013696:Temperature; D014871:Water Microbiology
chemical_list: D003470:Culture Media; D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S; D012965:Sodium Chloride