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Int J Syst Evol Microbiol 58 (2008), 353-356; DOI  10.1099/ijs.0.65389-0
© 2008 International Union of Microbiological Societies

Hahella antarctica sp. nov., isolated from Antarctic seawater

Kiyoung Lee1, Hong Kum Lee2 and Jang-Cheon Cho1

1 Division of Biology and Ocean Sciences, Inha University, Yonghyun-Dong, Incheon 402-751, Republic of Korea
2 Polar BioCenter, Korea Polar Research Institute, KOPRI, Songdo Techno Park, Incheon 406-840, Republic of Korea

Correspondence
Jang-Cheon Cho
chojc{at}inha.ac.kr

A Gram-negative, psychrotolerant, chemoheterotrophic, aerobic, cream-coloured bacterium, designated IMCC3113T, was isolated from coastal seawater from the Antarctic. On the basis of 16S rRNA gene sequence similarity analyses, the strain was most closely related to the type strains of Hahella chejuensis (93.0 %) and Hahella ganghwensis (92.1 %) in the Gammaproteobacteria. Phylogenetic investigations using 16S rRNA gene sequences showed that this Antarctic marine isolate formed a robust monophyletic clade with the two Hahella species but constituted a distinct phyletic line in the clade. The DNA G+C content of strain IMCC3113T was 56.4 mol% and the major respiratory quinone was Q-9. Several phenotypic and physiological characteristics, including the temperature range and NaCl optimum for growth, several enzyme activities and the cellular fatty acid composition, served to differentiate the strain from the two Hahella species. Therefore strain IMCC3113T represents a novel species of the genus Hahella, for which the name Hahella antarctica sp. nov. is proposed. The type strain is IMCC3113T (=KCCM 42675T =NBRC 102683T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain IMCC3113T is EF495227.

Transmission electron micrographs of cells of strain IMCC3113T are available as a supplementary figure with the online version of this paper.






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