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Psychrobacter alimentarius sp. nov., isolated from squid jeotgal, a traditional Korean fermented seafood

¹ Korea Research Institute of Bioscience and Biotechnology (KRIBB), PO Box 115, Yusong, Taejon, Korea
² The Center for Traditional Microorganism Resources, Keimyung University, Shindang-Dong, Dalseo-gu, Daegu, Korea

Correspondence
Yong-Ha Park
yhpark{at}kribb.re.kr

Two Gram-negative, non-motile, non-spore-forming, moderately halophilic strains, JG-100^T and JG-102, were isolated from squid jeotgal, a traditional Korean fermented seafood. The two strains grew optimally at 30 °C and in the presence of 2–3 % (v/w) NaCl. Strains JG-100^T and JG-102 were characterized chemotaxonomically; they both had ubiquinone-8 as the predominant respiratory lipoquinone and C_{18 : 1}9c as the major fatty acid. Their DNA G+C content was 44 mol%. Strains JG-100^T and JG-102 showed 1 bp difference in their 16S rRNA gene sequences and a mean DNA–DNA relatedness level of 88 %. Phylogenetic analysis based on 16S rRNA gene sequences showed that strains JG-100^T and JG-102 form a distinct phylogenetic lineage within the cluster comprising Psychrobacter species. The 16S rRNA gene sequences of strains JG-100^T and JG-102 had similarity levels of 95·2–98·4 % to sequences of the type strains of recognized Psychrobacter species. Levels of DNA–DNA relatedness between strains JG-100^T and JG-102 and the type strains of some phylogenetically related Psychrobacter species were 6–24 %. On the basis of phenotypic and phylogenetic data and genomic distinctiveness, strains JG-100^T and JG-102 should be placed in the genus Psychrobacter as a novel species, for which the name Psychrobacter alimentarius sp. nov. (type strain, JG-100^T=KCTC 12186^T=DSM 16065^T) is proposed.

The GenBank/EMBL/DDBJ accession numbers for the 16S rRNA gene sequences of strains JG-100^T and JG-102 are AY513645 and AY513646, respectively.

A table showing the fatty acid composition of strains JG-100^T and JG-102 is available as supplementary material in IJSEM Online.

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