title: Tindallia magadii gen. nov., sp. nov.: an alkaliphilic anaerobic ammonifier from soda lake deposits.
abstract: Strain Z-7934, an alkaliphilic, obligately anaerobic, fermentative, asporogenous bacterium with Gram-positive cell wall structure, was isolated from soda deposits in Lake Magadi, Kenya. The organism ferments only a few amino acids, preferentially arginine and ornithine, with production of acetate, propionate, and ammonia. It is a true alkaliphile, with pH range for growth ranging from 7.5 to 10.5 (optimum pH 8.5), and growth is dependent on the presence of sodium ions. The G+C content of the genomic DNA is 37.6 mol%. 16S rDNA sequence analysis of strain Z-7934 shows that it belongs phylogenetically to cluster XI of the low G+C Gram-positive bacteria. On the basis of its distinct phylogenetic position and unique physiological properties, we propose a new genus and new species, Tindallia magadii, for this strain. The type strain is Z-7934(T) (=DSM 10318).
authors.affiliation: Institute of Microbiology RAS, Prospect 60-let Octiabria, 7/2, 117811 Moscow, Russia.
authors.forename: V V
authors.initials: VV
authors.lastname: Kevbrin
authors.forename: T N
authors.initials: TN
authors.lastname: Zhilina
authors.forename: F A
authors.initials: FA
authors.lastname: Rainey
authors.forename: G A
authors.initials: GA
authors.lastname: Zavarzin
mesh_terms: D000468:Alkalies / Q000378:metabolism*; D000641:Ammonia / Q000378:metabolism*; D001421:Bacteria, Anaerobic / Q000145:classification* / Q000166:cytology / Q000235:genetics; D002455:Cell Division / Q000502:physiology; D004275:DNA, Ribosomal / Q000235:genetics; D005618:Fresh Water / Q000382:microbiology*; D008853:Microscopy; D008854:Microscopy, Electron; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D010802:Phylogeny; D012329:RNA, Bacterial / Q000032:analysis / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D014871:Water Microbiology
chemical_list: D000468:Alkalies; D004275:DNA, Ribosomal; D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S; D000641:Ammonia