title: Marinococcus luteus sp. nov., a halotolerant bacterium isolated from a salt lake, and emended description of the genus Marinococcus.
abstract: A Gram-positive, aerobic, motile, coccoid, orange-pigmented bacterium, designated strain YIM 91094(T), was isolated from a salt lake sample collected from Barkol Lake in Xinjiang Province, north-west China. The strain was able to grow at pH 6.0-8.0 (optimal growth at pH 7.0), at 10-37 degrees C (optimal growth at 28 degrees C) and in the presence of 0-25 % (w/v) NaCl [optimal growth in the presence of 10-15 % (w/v) NaCl]. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain YIM 91094(T) was affiliated with the genus Marinococcus and exhibited levels of sequence similarity of 99.2 % to Marinococcus halotolerans YIM 70157(T) and 99.7 % to Marinococcus halophilus DSM 20408(T). However, it showed moderately low levels of DNA-DNA relatedness with the above type strains (56.0 and 57.5 %, respectively). The peptidoglycan type of strain YIM 91094(T) was A1gamma, with meso-diaminopimelic acid as the diagnostic diamino acid. MK-7 was the predominant menaquinone and anteiso-C(15 : 0) (49.9 % of the total) and anteiso-C(17 : 0) (29.6 %) were the major cellular fatty acids. The DNA G+C content was 48.7 mol%. Strain YIM 91094(T) possessed chemotaxonomic markers that were consistent with its classification in the genus Marinococcus. On the basis of the data presented, strain YIM 91094(T) is considered to represent a novel species of the genus Marinococcus, for which the name Marinococcus luteus sp. nov. is proposed. The type strain is YIM 91094(T) (=KCTC 13214(T)=CCTCC AA 208014(T)). An emended description of the genus Marinococcus is provided.
authors.affiliation: Xinjiang Institute of Microbiology, Xinjiang Academy of Agricultural Science, Urumqi, Xinjiang 830091, People's Republic of China.
authors.forename: Yun
authors.initials: Y
authors.lastname: Wang
authors.forename: Lan-Lan
authors.initials: LL
authors.lastname: Cao
authors.forename: Shu-Kun
authors.initials: SK
authors.lastname: Tang
authors.forename: Kai
authors.initials: K
authors.lastname: Lou
authors.forename: Pei-Hong
authors.initials: PH
authors.lastname: Mao
authors.forename: Xiang
authors.initials: X
authors.lastname: Jin
authors.forename: Cheng-Lin
authors.initials: CL
authors.lastname: Jiang
authors.forename: Li-Hua
authors.initials: LH
authors.lastname: Xu
authors.forename: Wen-Jun
authors.initials: WJ
authors.lastname: Li
mesh_terms: D001406:Bacillaceae / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification* / Q000502:physiology; D004269:DNA, Bacterial / Q000235:genetics; D004275:DNA, Ribosomal / Q000235:genetics; D008969:Molecular Sequence Data; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D055049:Salt Tolerance; D012965:Sodium Chloride / Q000378:metabolism; D014871:Water Microbiology
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D012336:RNA, Ribosomal, 16S; D012965:Sodium Chloride