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Int J Syst Evol Microbiol 58 (2008), 2415-2419; DOI  10.1099/ijs.0.65614-0
© 2008 International Union of Microbiological Societies

Sphingopyxis marina sp. nov. and Sphingopyxis litoris sp. nov., isolated from seawater

Bong-Soo Kim1, Young Woon Lim2 and Jongsik Chun1

1 School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul 151-742, Republic of Korea
2 Division of Non-vascular Plants (Fungi/Algae), National Institute of Biological Resource, Incheon 404-708, Republic of Korea

Correspondence
Jongsik Chun
jchun{at}snu.ac.kr

Two yellow-pigmented, Gram-negative, aerobic bacterial strains, designated FR1087T and FR1093T, were isolated from surface seawater off Jeju Island, Republic of Korea. Both strains required sea salts for growth. Phylogenetic analysis based on 16S rRNA gene sequences indicated that the two isolates belong to the genus Sphingopyxis, showing the highest level of sequence similarity with respect to Sphingopyxis flavimaris SW-151T (97.9 %). The two isolates shared 98.5 % sequence similarity. DNA–DNA hybridization between the isolates and the type strain of Sphingopyxis flavimaris clearly suggested that strains FR1087T and FR1093T represent two separate novel species in the genus Sphingopyxis. Several phenotypic characteristics served to differentiate these two isolates from recognized members of the genus Sphingopyxis. The data from the polyphasic study presented here indicated that strains FR1087T and FR1093T should be classified as representing novel species in the genus Sphingopyxis, for which the names Sphingopyxis marina sp. nov. and Sphingopyxis litoris sp. nov., respectively, are proposed. The type strain of Sphingopyxis marina sp. nov. is FR1087T (=IMSNU 14132T=KCTC 12763T=JCM 14161T) and the type strain of Sphingopyxis litoris sp. nov. is FR1093T (=IMSNU 14133T=KCTC 12764T=JCM 14162T).

The GenBank/EMBL/DDBJ accession numbers for the 16S rRNA gene sequences of strains FR1087T and FR1093T are DQ781320 and DQ781321, respectively.






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