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Natronococcus jeotgali sp. nov., a halophilic archaeon isolated from shrimp jeotgal, a traditional fermented seafood from Korea

¹ University of Science & Technology, 52 Eoeun-dong, Daejeon 305-333, Korea
² Biological Resource Center, KRIBB, Daejeon 305-806, Korea
³ Environmental Biotechnology National Core Research Center, Gyeongsang National University, Jinju 660-701, Korea

Correspondence
Jin-Woo Bae
baejw{at}kribb.re.kr

A novel halophilic archaeon (strain B1^T) belonging to the genus Natronococcus was isolated from shrimp jeotgal, a traditional fermented food from Korea. Colonies of this strain were orange–red and cells were non-motile cocci that stained Gram-variable. Strain B1^T grew in 7.5–30.0 % (w/v) NaCl and at 21–50 °C and pH 7.0–9.5, with optimal growth occurring in 23–25 % (w/v) NaCl and at 37–45 °C and pH 7.5. Strain B1^T was most closely related to the type strain of Natronococcus occultus, with which it shared 97.91 % 16S rRNA gene sequence similarity. Within the phylogenetic tree, this novel strain shared a branching point with N. occultus and occupied a phylogenetic position that was distinct from the main Natronococcus branch. The degree of DNA–DNA hybridization with the type strain of N. occultus, the most closely related species phylogenetically, was 16.4 %. On the basis of these results, it is concluded that strain B1^T represents a novel species of the genus Natronococcus, for which the name Natronococcus jeotgali is proposed. The type strain is B1^T (=KCTC 4018^T=DSM 18795^T=JCM 14583^T=CECT 7216^T).

This article has been cited by other articles:

				S. W. Roh, Y.-D. Nam, H.-W. Chang, K.-H. Kim, Y. Sung, M.-S. Kim, H.-M. Oh, and J.-W. Bae Haloterrigena jeotgali sp. nov., an extremely halophilic archaeon from salt-fermented food Int J Syst Evol Microbiol, September 1, 2009; 59(9): 2359 - 2363. [Abstract] [Full Text] [PDF]