title: Chimaereicella alkaliphila gen. nov., sp. nov., a Gram-negative alkaliphilic bacterium isolated from a nonsaline alkaline groundwater.
abstract: A Gram-negative bacterium designated AC-74(T) was isolated from a highly alkaline groundwater environment (pH 11.4). This organism formed rod-shaped cells, is strictly aerobic, catalase and oxidase positive, tolerates up to 3.0% NaCl, has an optimum growth temperature of 30 degrees C, but no growth occurs at 10 or 40 degrees C, and an optimum pH value of 8.0, but no growth occurs at pH 7.0 or 11.3. The predominant fatty acids are iso-15:0, iso-17:1 omega9c and 16:1 omega7c and or iso-15:2OH. The G+C content of DNA was 43.5mol%. The phylogenetic analyses of the sequences of the 16s RNA genes indicated that strain AC-74(T) belongs to the family "Flexibacteriaceae" and is phylogenetically equidistant ( approximately 94.5%) from the majority of the species of the genus Algoriphagus and from the genus Hongiella. Based on the phylogenetic analyses and distinct phenotypic characteristics, we are of the opinion that strain AC-74(T), represents a new species of the novel genus for which we propose the name Chimaereicella alkaliphila gen. nov., sp. nov.
authors.affiliation: Departamento de Zoologia and Centro de Neurociências de Biologia Celular, Universidade de Coimbra, 3004-517 Coimbra, Portugal.
authors.forename: Igor
authors.initials: I
authors.lastname: Tiago
authors.forename: Vítor
authors.initials: V
authors.lastname: Mendes
authors.forename: Carlos
authors.initials: C
authors.lastname: Pires
authors.forename: Paula V
authors.initials: PV
authors.lastname: Morais
authors.forename: António
authors.initials: A
authors.lastname: Veríssimo
mesh_terms: D001482:Base Composition; D002374:Catalase / Q000378:metabolism; D041964:Cytophagaceae / Q000737:chemistry / Q000145:classification* / Q000502:physiology; D005227:Fatty Acids; D006863:Hydrogen-Ion Concentration; D008969:Molecular Sequence Data; D010088:Oxidoreductases / Q000378:metabolism; D012329:RNA, Bacterial / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D013045:Species Specificity; D013696:Temperature; D014871:Water Microbiology
chemical_list: D005227:Fatty Acids; D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S; D010088:Oxidoreductases; D002374:Catalase