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Shewanella marina sp. nov., isolated from seawater

¹ Department of Biology, Sunchon National University, Suncheon 540-742, Republic of Korea
² Division of Food Science and Aqualife Medicine, Chonnam National University, Yeosu 550-749, Republic of Korea

Correspondence
Chi Nam Seong
scnu{at}scnu.ac.kr

A motile, rod-shaped, pale-brown-pigmented bacterium, designated strain C4^T, was isolated from seawater collected from the South Sea (Republic of Korea). Cells were Gram-negative, facultatively anaerobic, and catalase- and oxidase-positive. The major fatty acids were summed feature 3 (C_{16 : 1}7c and/or iso-C_{15 : 0} 2-OH; 19.4 %), C_{16 : 0} (16.3 %), C_{17 : 1}8c (9.5 %) and iso-C_{15 : 0} (7.7 %). The DNA G+C content was 40.8 mol%. A phylogenetic tree based on 16S rRNA gene sequences showed that strain C4^T formed a lineage within the genus Shewanella (92.7–96.1 % sequence similarity to representative strains of the genus Shewanella) and was part of a distinct branch with the clade comprising Shewanella haliotis DW01^T and Shewanella algae ATCC 51192^T. Phenotypic characteristics enabled strain C4^T to be distinguished from S. haliotis and S. algae. On the basis of the data presented in this study, strain C4^T represents a novel species, for which the name Shewanella marina sp. nov. is proposed. The type strain is C4^T (=KCTC 22185^T=JCM 15074^T).

A scanning electron micrograph and GN2 MicroPlate (Biolog) data for strain C4^T are available as supplementary material with the online version of this paper.

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