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Int J Syst Evol Microbiol 59 (2009), 2359-2363; DOI  10.1099/ijs.0.008243-0
© 2009 International Union of Microbiological Societies

Haloterrigena jeotgali sp. nov., an extremely halophilic archaeon from salt-fermented food

Seong Woon Roh1,2, Young-Do Nam1,2, Ho-Won Chang2, Kyoung-Ho Kim1, Youlboong Sung2, Min-Soo Kim1,2, Hee-Mock Oh2 and Jin-Woo Bae1,2

1 Department of Life and Nanopharmaceutical Sciences, and Department of Biology, Kyung Hee University, Seoul 130-701, Republic of Korea
2 University of Science & Technology, Biological Resource Center, KRIBB, Daejeon 305-806, Republic of Korea

Correspondence
Jin-Woo Bae
baejw{at}khu.ac.kr

A novel red-pigmented halophilic archaeon, strain A29T, was isolated from shrimp jeotgal, a traditional salt-fermented food from Korea. This strain grows in the ranges 10–30 % (w/v) NaCl, 17–50 °C and pH 6.5–8.5, with optimal growth occurring at 15–20 % NaCl, 37–45 °C and pH 7.0–7.5. The isolate is Gram-negative and non-motile. Phylogenetic analysis, based on 16S rRNA gene sequences, showed that strain A29T is associated with the genus Haloterrigena and closely related to the species Haloterrigena thermotolerans (99.0 % similarity). However, DNA–DNA hybridization experiments revealed that the level of hybridization between strain A29T and related strains of Haloterrigena is less than 70 %. The polar lipid fraction consists of phosphatidylglyerol (PG), phosphatidylglycerol phosphate methyl ester (PGP-Me) and mannose-2,6-disulfate(1-2)-glucose glycerol diether (S2-DGD). The G+C content of genomic DNA of the type strain is 62.3 mol%. On the basis of this polyphasic taxonomic study, strain A29T should be placed in the genus Haloterrigena as a novel species, for which the name Haloterrigena jeotgali sp. nov. is proposed. The type strain of the new species is A29T (=KCTC 4020T=DSM 18794T=JCM 14585T=CECT 7218T).

Abbreviations: S-DGD, mannose-6-sulfate(1-2)-glucose glycerol diether; S2-DGD, mannose-2,6-disulfate(1-2)-glucose glycerol diether

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain A29T is EF077633.

Phylogenetic trees based on 16S rRNA gene sequences generated by the minimum-evolution and maximum-parsimony methods, and a thin-layer chromatogram of the polar lipids of strain A29T and a reference strain (H. thermotolerans PR5T) are available as supplementary figures in IJSEM Online.






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