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Korea Research Institute of Bioscience and Biotechnology (KRIBB), PO Box 115, Yusong, Taejon, Korea
Correspondence
Jung-Hoon Yoon
jhyoon{at}kribb.re.kr
A Gram-negative, motile, yellow-pigmented, slightly halophilic bacterial strain, SW-151T, was isolated from sea water of the Yellow Sea in Korea, and subjected to a polyphasic taxonomic study. The isolate grew optimally at 30 °C and in the presence of 23 % NaCl. Strain SW-151T was characterized chemotaxonomically as having Q-10 as the predominant respiratory lipoquinone and C18 : 1
7c, C16 : 1
7c and/or iso-C15 : 0 2-OH and C17 : 1
6c as the major fatty acids. Sphingoglycolipid, diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine were the major polar lipids. The DNA G+C content was 58 mol%. 16S rRNA gene sequence analysis showed that strain SW-151T joins the evolutionary radiation enclosed by the genus Sphingopyxis. Similarities between the 16S rRNA gene sequences of strain SW-151T and the type strains of Sphingopyxis species ranged from 92·3 to 94·3 %, which is low enough to categorize strain SW-151T as a species distinct from previously described Sphingopyxis species. On the basis of phenotypic properties and phylogenetic distinctiveness, strain SW-151T (=KCTC 12232T=DSM 16223T) should be classified as a novel Sphingopyxis species, for which the name Sphingopyxis flavimaris sp. nov. is proposed.
The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain SW-151T is AY554010
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