@article{mbs:/content/journal/ijsem/10.1099/ijs.0.031401-0, author = "Kim, So-Jeong and Park, Soo-Je and Oh, Yong-Sik and Lee, Sang-Ah and Shin, Kee-Sun and Roh, Dong-Hyun and Rhee, Sung-Keun", title = "Shewanella arctica sp. nov., an iron-reducing bacterium isolated from Arctic marine sediment", journal= "International Journal of Systematic and Evolutionary Microbiology", year = "2012", volume = "62", number = "Pt_5", pages = "1128-1133", doi = "https://doi.org/10.1099/ijs.0.031401-0", url = "https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijs.0.031401-0", publisher = "Microbiology Society", issn = "1466-5034", type = "Journal Article", abstract = "Two strains of dissimilatory iron-reducing bacteria, which could couple lactate oxidation to iron reduction for energy conservation, were isolated from Arctic marine sediment. The strains, IR12T and IR26, were both Gram-staining-negative, catalase- and oxidase-positive and facultative anaerobes. Their cells were rod-shaped and motile by means of a polar flagellum. Both strains grew in the presence of 0.5–3.5 % (w/v) NaCl, with an absolute requirement for Na+. Both were psychrotolerant since they could grow at 4-28 °C but had an optimum growth temperature of 20 °C. Both grew at pH 4.5–9.0 (optimum, pH 7.5). The major fatty acids of strains IR12T and IR26 were summed feature 3 (C16 : 1ω6c and/or C16 : 1ω7c) and C16 : 0. Phylogenetic analyses based on 16S rRNA gene sequences indicated that strains IR12T and IR26 belonged to the class Gammaproteobacteria and were most closely related to Shewanella vesiculosa M7T, Shewanella livingstonensis NF22T and Shewanella frigidimarina ACAM 591T (with 98.5 and 98.8 %, 98.5 and 98.8 %, and 98.5 and 98.8 % sequence similarities, respectively). The genomic DNA G+C contents of strains IR12T and IR26 were 40.0 and 40.3 mol%, respectively. DNA–DNA relatedness data indicated that the two novel strains represented a single species that was distinct from S. vesiculosa M7T, S. livingstonensis NF22T and S. frigidimarina ACAM 591T. Based on the phylogenetic, phenotypic and DNA–DNA relatedness data, the two new strains represent a single novel species of the genus Shewanella , for which the name Shewanella arctica sp. nov. is proposed. The type strain is IR12T ( = KCTC 23109T = JCM 16723T).", }