title: Virgibacillus subterraneus sp. nov., a moderately halophilic Gram-positive bacterium isolated from subsurface saline soil.
abstract: A Gram reaction-positive, moderately halophilic bacterium, designated H57B72(T), was isolated from subsurface saline soil of Qaidam basin in the Qinghai province, China. Cells were rod-shaped, strictly aerobic, spore-forming and motile. The isolate grew optimally at 9 % (w/v) NaCl, pH7.5 and 30°C. The cell-wall peptidoglycan of strain H57B72(T) contained meso-diaminopimelic acid as the diagnostic diamino acid. The predominant isoprenoid quinone was MK-7. The major cellular fatty acids were anteiso-C(15 : 0) (59.97 %) and anteiso-C(17 : 0) (17.14 %). Phosphatidylglycerol, diphosphatidylglycerol and a glycolipid were found to be the predominant polar lipids. The genomic DNA G+C content of strain H57B72(T) was 37.1mol%. 16S rRNA gene sequence analysis showed that strain H57B72(T) was a member of the genus Virgibacillus and was most closely related to Virgibacillus salinus DSM 21756(T) (98.3 % gene sequence similarity). The level of DNA-DNA relatedness between strain H57B72(T) and V. salinus DSM 21756(T) was 8.5 %. Based on the phenotypic, genotypic and phylogenetic data presented, strain H57B72(T) represents a novel species, for which the name Virgibacillus subterraneus sp. nov. is proposed. The type strain is H57B72(T) (=DSM 22441(T) =CGMCC 1.7734(T)).
authors.affiliation: Graduate University of the Chinese Academy of Sciences, Beijing 100049, PR China.|State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China.
authors.forename: Xiaowei
authors.initials: X
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China.
authors.forename: Yanfen
authors.initials: Y
authors.lastname: Xue
authors.affiliation: State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China.
authors.forename: Yanhe
authors.initials: Y
authors.lastname: Ma
mesh_terms: D015373:Bacterial Typing Techniques; D001482:Base Composition; D002681:China; D004269:DNA, Bacterial / Q000235:genetics; D003960:Diaminopimelic Acid / Q000737:chemistry; D005227:Fatty Acids / Q000737:chemistry; D008969:Molecular Sequence Data; D010743:Phospholipids / Q000737:chemistry; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D054712:Salinity; D017422:Sequence Analysis, DNA; D012987:Soil / Q000737:chemistry; D012988:Soil Microbiology; D058679:Virgibacillus / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D024482:Vitamin K 2 / Q000031:analogs & derivatives / Q000737:chemistry
chemical_list: D004269:DNA, Bacterial; D005227:Fatty Acids; D010743:Phospholipids; D012336:RNA, Ribosomal, 16S; D012987:Soil; D024482:Vitamin K 2; D003960:Diaminopimelic Acid; C062629:menaquinone 7