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Jannaschia pohangensis sp. nov., isolated from seashore sand in Korea

¹ KACC – Korean Agricultural Culture Collection, Microbial Genetics Division, National Institute of Agricultural Biotechnology, Rural Development Administration, Suwon 441-707, Republic of Korea
² Applied Microbiology Division, National Institute of Agricultural Science and Technology, Rural Development Administration, Suwon 441-707, Republic of Korea
³ DSMZ – Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstraße 7b, D-38124 Braunschweig, Germany

Correspondence
Soon-Wo Kwon
swkwon{at}rda.go.kr

A Gram-negative, aerobic bacterium, H1-M8^T, was isolated from seashore sand in Korea and then characterized using a polyphasic approach. Cells were short rods (0.7–1.0x1.5–2.0 µm) and were motile (each cell having at least one flagellum). Colonies were light-brown, non-pigmented, circular and convex with clear margins. Growth of the strain was observed at 5–35 °C, pH 6.0–9.0 and NaCl concentrations up to 8.4 % (w/v). Phylogenetic analysis of the 16S rRNA gene sequence revealed a clear affiliation between the novel strain and members of the genus Jannaschia. The sequence similarities between H1-M8^T and type strains of the genus Jannaschia ranged from 97.0 to 97.8 %. However, DNA–DNA hybridizations between the isolate and type strains of other related species produced low values (21–38 %). The major isoprenoid quinone was Q-10 and the predominant cellular fatty acids were 18 : 17c (68.2 %) and 18 : 0 (10.5 %). The G+C content of the DNA was 63.6 mol%. On the basis of physiological, biochemical and chemotaxonomic traits and data from the comparative 16S rRNA sequence analysis, strain H1-M8^T represents a novel species of the genus Jannaschia, for which the name Jannaschia pohangensis sp. nov. is proposed. The type strain is H1-M8^T (=KACC 11609^T =DSM 19073^T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain H1-M8^T is DQ643999.

A transmission electron micrograph of a cell of strain H1-M8^T and a table showing the cellular fatty acid compositions of strain H1-M8^T and type strains of Jannaschia species are available as supplementary material with the online version of this paper.