title: Salinicoccus kekensis sp. nov., a novel alkaliphile and moderate halophile isolated from Keke Salt Lake in Qinghai, China.
abstract: A novel alkaliphilic and moderate halophilic bacterium, designated strain K164(T), was isolated from Keke Salt Lake in Qinghai, China. The strain grew with 2.0-20.0% (w/v) NaCl, at 4-50 degrees C and pH 6.5-11.5, with an optimum of 8% (w/v) NaCl, 37degrees C and pH 10, respectively. The predominant respiratory quinone was menaquinone 6 (MK-6) and the major polar lipid was phosphatidylethanolamine. The major cellular fatty acids were anteiso-C(15:0) and iso-C(15:0). The genomic DNA G+C content was 50.16 mol. Phylogenetic analysis based on the full-length 16S rRNA gene sequence revealed that strain K164(T) was a member of the genus Salinicoccus. Strain K164(T) showed the highest similarity (98.4%) with Salinicoccus alkaliphilus AS 1.2691(T) and below 97% similarity with other recognized members of the genus in 16S rRNA gene sequence. Level of DNA-DNA relatedness between strain K164(T) and Salinicoccus alkaliphilus AS 1.2691(T) was 20.1%. On the basis of its phenotypic characteristics and the level of DNA-DNA hybridization, strain K164(T) is considered to represent a novel species of the genus Salinicoccus, for which the name Salinicoccus kekensis sp. nov. is proposed. The type strain is K164(T) (=CGMCC 1.10337(T) = DSM 23173(T)).
authors.affiliation: State Key Laboratory of Agrobiotechnology, China Agricultural University, Beijing 100193, People's Republic of China.
authors.forename: Miao
authors.initials: M
authors.lastname: Gao
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.forename: San-feng
authors.initials: SF
authors.lastname: Chen
authors.forename: Yu-guang
authors.initials: YG
authors.lastname: Zhou
authors.forename: Hong-can
authors.initials: HC
authors.lastname: Liu
mesh_terms: D015373:Bacterial Typing Techniques; D001482:Base Composition; D002681:China; D004275:DNA, Ribosomal / Q000032:analysis / Q000235:genetics; D020459:Genes, rRNA; D019015:Geologic Sediments / Q000382:microbiology*; D006095:Gram-Positive Cocci; D006863:Hydrogen-Ion Concentration; D010802:Phylogeny; D016133:Polymerase Chain Reaction; D012336:RNA, Ribosomal, 16S / Q000032:analysis / Q000235:genetics; D054712:Salinity; D017422:Sequence Analysis, DNA; D040141:Staphylococcaceae / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification* / Q000502:physiology; D014871:Water Microbiology
chemical_list: D004275:DNA, Ribosomal; D012336:RNA, Ribosomal, 16S