期刊
ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY
卷 99, 期 3, 页码 663-670出版社
SPRINGER
DOI: 10.1007/s10482-010-9542-1
关键词
Halomonas aidingensis sp nov.; Moderate halophile; Salt lake; Gram-negative
类别
资金
- Xiamen University
Two Gram-negative moderately halophilic bacterial strains, designated Ad-1(T) and C-12, were isolated from Aiding salt lake of Xinjiang in China. The novel isolates were subjected to a polyphasic taxonomic study. Cells of these strains were cocci or short rods and motile with polar flagella. Colonies produced brown-red pigment. The isolates grew in the range of 0.5-25% (w/v) NaCl, pH 5.5-10.5 and 4-45A degrees C. Analysis of their 16S rRNA gene sequences indicated that strains Ad-1(T) and C-12 belonged to the genus Halomonas showing 92.7-98.4% similarity with the type species. The isoprenoid quinones of the isolates were Q-9 and Q-8. The major cellular fatty acids were C18:1 omega 7c, C16:1 omega 7c/6c, C16:0, C12:0-3OH and C10:0. The DNA G + C contents of strains Ad-1(T) and C-12 were 64.6 and 63.9 mol%, respectively. The DNA relatedness between the two isolates was 89.2%. The similarities of these newly isolated strains with closely related type strains were lower than 35% at the genetic level. Based on phenotypic, chemotaxonomic and genetic characteristics, the representative strain Ad-1(T) is considered to be a novel species of the genus Halomonas, for which the name Halomonas aidingensis sp. nov. is proposed, with Ad-1(T) (= CGMCC 1.10191(T) = NBRC 106173(T)) as the type strain.
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