Abstract:
:A novel Gram-negative, non-sporulating, moderately halophilic, facultatively alkaliphilic, catalase- and oxidase-positive, obligately aerobic bacterium, strain YIM-Y25(T), was isolated from a subterranean brine sample collected from a salt mine in Yunnan, south-west China. Cells were spirilla, motile by monopolar flagella, with meso-diaminopimelic acid in the cell-wall peptidoglycan. Growth occurred with 1-15 % (w/v) NaCl (optimum 5 %), at pH 6.0-10.0 (optimum pH 8.0) and at 15-50 degrees C (optimum 35-40 degrees C). Ubiquinone Q-8 was the predominant respiratory quinone. Polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, phosphatidylmonomethylamine and an unidentified phospholipid. The major cellular fatty acids were C(18 : 1)omega7c, iso-C(16 : 0), C(16 : 0) and C(16 : 1). The genomic DNA G+C content was 58.5 mol%. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain YIM-Y25(T) was most closely related to the type strain of the sole recognized species of the genus Saccharospirillum, Saccharospirillum impatiens EL-105(T) (sequence similarity 97.0 %), and these two strains formed a robust lineage in the phylogenetic tree. The level of DNA-DNA relatedness between them was 12.6 %. The combination of phylogenetic analysis, phenotypic differences, chemotaxonomic properties and DNA-DNA hybridization data supported the view that this strain represents a novel species of the genus Saccharospirillum, for which the name Saccharospirillum salsuginis sp. nov. is proposed, with YIM-Y25(T) (=CCTCC AA 207033(T) =KCTC 22169(T)) as the type strain.
journal_name
Int J Syst Evol Microbiolauthors
Chen YG,Cui XL,Li QY,Wang YX,Tang SK,Liu ZX,Wen ML,Peng Q,Xu LHdoi
10.1099/ijs.0.003616-0subject
Has Abstractpub_date
2009-06-01 00:00:00pages
1382-6issue
Pt 6eissn
1466-5026issn
1466-5034pii
59/6/1382journal_volume
59pub_type
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