1887

Abstract

Three Gram-negative, non-motile, non-spore-forming, slightly halophilic rods (strains SW-110, SW-116 and SW-140) were isolated from sea water of a tidal flat of the Yellow Sea in Korea and subjected to a polyphasic taxonomic study. The three isolates did not produce bacteriochlorophyll and were characterized chemotaxonomically by having ubiquinone-10 as the predominant respiratory lipoquinone and C 7 and C 6 as the major fatty acids. The DNA G+C content of the three isolates was between 62·2 and 62·9 mol%. Strains SW-110, SW-116 and SW-140 showed no difference in their 16S rRNA gene sequences, and their mean level of DNA–DNA relatedness was 94·8 %. Phylogenetic analyses based on 16S rRNA gene sequences showed that the three strains form a distinct phylogenetic lineage within the cluster comprising species. Similarities between the 16S rRNA gene sequences of strains SW-110, SW-116 and SW-140 and the type strains of species ranged from 98·4 % (with ) to 97·7 % (with ). Levels of DNA–DNA relatedness between strains SW-110, SW-116 and SW-140 and the type strains of all recognized species were in the range 5·3–12·7 %. On the basis of polyphasic taxonomic data, strains SW-110, SW-116 and SW-140 were classified as a novel species, for which the name sp. nov. is proposed. The type strain is SW-110 (=KCCM 41818=JCM 12189).

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2004-11-01
2020-08-03
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