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Int J Syst Evol Microbiol 56 (2006), 1055-1058; DOI  10.1099/ijs.0.64171-0
© 2006 International Union of Microbiological Societies

Psychroserpens mesophilus sp. nov., a mesophilic marine bacterium belonging to the family Flavobacteriaceae isolated from a young biofilm

Kae Kyoung Kwon1, Soon Jae Lee1, Jae Hyun Park1,2, Tae-Young Ahn2 and Hong Kum Lee3

1 Marine Biotechnology Research Center, Korea Ocean Research and Development Institute (KORDI), Ansan PO Box 29, 425-600, Republic of Korea
2 Department of Microbiology, Dankook University, Cheonan 330-714, Republic of Korea
3 Polar BioCenter, Korea Polar Research Institute, Korea Ocean Research and Development Institute (KORDI), Ansan PO Box 29, 425-600, Republic of Korea

Correspondence
Hong Kum Lee
hklee{at}kopri.re.kr

A number of marine bacteria isolated from young biofilms were characterized as belonging to the family Flavobacteriaceae. The taxonomic characterization of strain KOPRI 13649T, which was isolated from an acrylic surface at the seashore at Gangneung, Korea, is reported here. The nearly complete 16S rRNA gene sequence of strain KOPRI 13649T was determined and was found to have a high level of similarity with that of Psychroserpens burtonensis (95.0–95.6 %). In addition, phylogenetic analysis and comparison with closely related strains confirmed that the strain represented a novel member of the genus Psychroserpens. The major respiratory quinone of strain KOPRI 13649T was MK-6 and the DNA G+C content was 29.8 mol%. The dominant fatty acid methyl esters were i-15 : 0, a-15 : 0, i-16 : 0, i-15 : 1{omega}10, 16 : 1{omega}7 and 15 : 0. Growth was observed at 10–34 °C (optimum 30 °C), at pH 6–9 (optimum 6.5–8.0) and with 0.5–4 % NaCl (optimum 1 %). On the basis of the polyphasic taxonomic evidence presented, strain KOPRI 13649T (=KCCM 42261T=JCM 13413T) should be classified as the type strain of a novel species in the genus Psychroserpens, for which the name Psychroserpens mesophilus sp. nov. is proposed.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain KOPRI 13649T is DQ001321.

A table detailing the cellular fatty acid content of strain KOPRI 13649T and closely related members of the Flavobacteriaceae is available as supplementary material in IJSEM Online.






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