<Emphasis Type="Italic">Halomonas sediminis</Emphasis> sp. nov., a new halophilic bacterium isolated from salt-lake sediment in China |
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Authors: | Heng-Yu Huang Yi-Guang Chen Yong-Xia Wang Ji-Hui Liu Shu-Kun Tang Qian Peng Meng-Liang Wen Hong Yu Xiao-Long Cui |
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Institution: | (1) Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, 650091 Kunming, Yunnan, People’s Republic of China;(2) College of Bio-resources and Environmental Science, Jishou University, 416000 Jishou, Hunan, People’s Republic of China |
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Abstract: | A novel Gram-negative, slightly halophilic, catalase- and oxidase-positive, obligately aerobic bacterium, strain YIM-C248T, was isolated from a sediment sample collected from a salt-lake in the Qaidam Basin in Qinghai, north-west China. Cells were
non-sporulating short rods, occurring singly or as doublets, motile with peritrichous flagella. Growth occurred with 1–15%
(w/v) NaCl optimum 2–4% (w/v) NaCl], at pH 6.0–10.0 (optimum pH 7.5) and at 4–35°C (optimum 25–30°C). The major cellular
fatty acids were C18:1
ω7c, C12:0 3-OH, cyclo C19:0
ω8c, C16:0 and C16:1. The predominant respiratory quinone was Q-9 and the genomic DNA G + C content was 58.6 mol%. Phylogenetic analysis based
on 16S rRNA gene sequences indicated that strain YIM-C248T should be assigned to the genus Halomonas. The sequence similarities between the isolate and the type strains of members of the genus Halomonas were in the range of 92.5–97.5%. The combination of phylogenetic analysis, DNA–DNA hybridization data, phenotypic characteristics
and chemotaxonomic differences supported the view that strain YIM-C248T represents a new species of the genus Halomonas, for which the name Halomonas sediminis sp. nov. is proposed, with YIM-C248T (=CCTCC AA 207031 = KCTC 22167) as the type strain.
The GenBank/EMBL/DBBJ accession number for the 16S rRNA gene sequence of strain YIM-C248T is EU135707. |
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Keywords: | Salt lake Halophilic Halomonas sediminis sp nov |
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