title: Desulfonatronovibrio hydrogenovorans gen. nov., sp. nov., an alkaliphilic, sulfate-reducing bacterium.
abstract: A new alkaliphilic, sulfate-reducing bacterium, strain Z-7935T (T = type strain), was isolated from a soda-depositing lake, Lake Magadi in Kenya. This organism is a motile vibrio which utilizes only hydrogen and formate as electron donors and sulfate, sulfite, and thiosulfate, but not sulfur, as electron acceptors. Thiosulfate is dismutated. Strain Z-7935T is an obligately sodium-dependent alkaliphile which grows in sodium carbonate medium and does not grow at pH 7; the maximum pH for growth is more than pH 10, and the optimum pH is 9.5 to 9.7. The optimum NaCl concentration for growth is 3% (wt/vol). The optimum temperature for growth is 37 degrees C. The G + C content of the DNA is 48.6 mol%. 16S ribosomal DNA sequence analysis revealed that strain Z-7935T represents a new lineage with genus status in the delta subclass of the Proteobacteria. The name Desulfonatronovibrio hydrogenovorans gen. nov., sp. nov. is proposed for this organism; the type strain of D. hydrogenovorans is strain Z-7935 (= DSM 9292).
authors.affiliation: Institute of Microbiology, Russian Academy of Sciences, Moscow, Russia.
authors.forename: T N
authors.initials: TN
authors.lastname: Zhilina
authors.forename: G A
authors.initials: GA
authors.lastname: Zavarzin
authors.forename: F A
authors.initials: FA
authors.lastname: Rainey
authors.forename: E N
authors.initials: EN
authors.lastname: Pikuta
authors.forename: G A
authors.initials: GA
authors.lastname: Osipov
authors.forename: N A
authors.initials: NA
authors.lastname: Kostrikina
mesh_terms: D001431:Bacteriological Techniques; D001482:Base Composition; D002254:Carbonates / Q000378:metabolism; D003470:Culture Media / Q000378:metabolism; D003901:Desulfovibrio / Q000145:classification* / Q000235:genetics / Q000254:growth & development / Q000378:metabolism; D005561:Formates / Q000378:metabolism; D006859:Hydrogen / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D008055:Lipids / Q000032:analysis; D008969:Molecular Sequence Data; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012689:Sequence Homology, Nucleic Acid; D012965:Sodium Chloride / Q000378:metabolism; D013431:Sulfates / Q000378:metabolism; D013447:Sulfites / Q000378:metabolism; D013885:Thiosulfates / Q000378:metabolism
chemical_list: D002254:Carbonates; D003470:Culture Media; D005561:Formates; D008055:Lipids; D012336:RNA, Ribosomal, 16S; D013431:Sulfates; D013447:Sulfites; D013885:Thiosulfates; D012965:Sodium Chloride; C005686:sodium carbonate; D006859:Hydrogen