%0 Journal Article %A Zhang, Jinwei %A Burgess, J. Grant %T Shewanella electrodiphila sp. nov., a psychrotolerant bacterium isolated from Mid-Atlantic Ridge deep-sea sediments %D 2015 %J International Journal of Systematic and Evolutionary Microbiology, %V 65 %N Pt_9 %P 2882-2889 %@ 1466-5034 %R https://doi.org/10.1099/ijs.0.000345 %I Microbiology Society, %X Strains MAR441T and MAR445 were isolated from Mid-Atlantic Ridge sediments from a depth of 2734 m, and were found to belong to the genus Shewanella. The strains were rod-shaped, pigmented, non-motile and capable of anaerobic growth either by fermentation of carbohydrates or by anaerobic respiration. The strains utilized a variety of electron acceptors, including nitrate and ferric compounds, and could utilize peptone when grown anaerobically in a two-chambered microbial fuel cell, which used carbon cloth electrodes and delivered a stable power output of ∼150–200 mW m− 2. The major fatty acids were typical of the genus Shewanella, with major components C13 : 0, iso-C13 : 0, iso-C15 : 0, C16 : 0, C16 : 1ω7c, C18 : 1ω7c and C20 : 5ω3 fatty acids. The DNA G+C content of strains MAR441T and MAR445 was 42.4 mol%. 16S rRNA gene sequence analysis indicated that strains MAR441T and MAR445 were most closely related to Shewanella olleyana (sequence similarities 97.9  % to the type strain). DNA–DNA hybridization demonstrated only 15.6–37.2  % relatedness between strain MAR441T and the type strains of related species of the genus Shewanella. Phenotypic characteristics confirmed that these isolates constituted a novel species of the genus Shewanella, for which the name Shewanella electrodiphila sp. nov. is proposed; the type strain is MAR441T ( = ATCC BAA-2408T = DSM 24955T). %U https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijs.0.000345