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1 Korea Research Institute of Bioscience and Biotechnology (KRIBB), PO Box 115, Yusong, Taejon, Korea
2 Department of Microbiology, College of Medicine, Chungang University, 221 Heukseok-dong, Seoul, Korea
3 Health Technology Planning and Evaluation Board, 57-1 Noryangjin-dong, Seoul, Korea
Correspondence
Jung-Hoon Yoon
jhyoon{at}kribb.re.kr
A Gram-positive, non-motile, slightly halophilic actinomycete, strain JG-241T, was isolated from jeotgal, a traditional Korean fermented seafood, and its taxonomic position was investigated by using a polyphasic approach. Strain JG-241T grew optimally at 25–30 °C and in the presence of 2–5 % (w/v) NaCl. The physiological and biochemical properties of strain JG-241T were distinguishable from those of recognized Nesterenkonia species. Strain JG-241T had a peptidoglycan type based on L-lys–gly–D-Asp. It contained MK-7, MK-8 and MK-9 as the predominant menaquinones and anteiso-C15 : 0 and anteiso-C17 : 0 as the major fatty acids. The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol and an unidentified glycolipid. The DNA G+C content was 68.0 mol%. Comparative 16S rRNA gene sequence analysis showed that strain JG-241T falls within the radiation of the cluster comprising Nesterenkonia species. Similarity values between the 16S rRNA gene sequence of strain JG-241T and those of the type strains of Nesterenkonia species ranged from 96.7 to 99.7 %. DNA–DNA relatedness data and repetitive extragenic palindromic DNA-PCR genomic fingerprinting patterns showed that strain JG-241T differs genetically from recognized Nesterenkonia species. On the basis of its phenotypic properties and phylogenetic and genetic distinctiveness, strain JG-241T represents a novel species of the genus Nesterenkonia, for which the name Nesterenkonia jeotgali sp. nov. is proposed. The type strain is JG-241T (=KCTC 19053T=JCM 12610T).
The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain JG-241T is AY928901.
Levels of DNA–DNA relatedness between strain JG-241T and the type strains of six recognized Nesterenkonia species are shown in a supplementary table available in IJSEM Online.
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