%0 Journal Article %A Takai, Ken %A Abe, Mariko %A Miyazaki, Masayuki %A Koide, Osamu %A Nunoura, Takuro %A Imachi, Hiroyuki %A Inagaki, Fumio %A Kobayashi, Tohru %T Sunxiuqinia faeciviva sp. nov., a facultatively anaerobic organoheterotroph of the Bacteroidetes isolated from deep subseafloor sediment %D 2013 %J International Journal of Systematic and Evolutionary Microbiology, %V 63 %N Pt_5 %P 1602-1609 %@ 1466-5034 %R https://doi.org/10.1099/ijs.0.044065-0 %I Microbiology Society, %X A facultatively anaerobic organoheterotroph, designated JAM-BA0302T, was isolated from a deep subseafloor sediment at a depth of 247.1 m below the seafloor off the Shimokita Peninsula of Japan in the north-western Pacific Ocean (Site C9001 , water depth 1180 m). Cells of strain JAM-BA0302T showed gliding motility and were thin, long rods with peritrichous fimbriae-like structures. Growth occurred at 4–37 °C (optimum 30 °C; doubling time 8 h), at pH 5.4–8.3 (optimum pH 7.5) and with 5–60 g NaCl l−1 (optimum 20–25 g l−1). The isolate utilized proteinaceous substrates such as yeast extract, tryptone, casein and Casamino acids with O2 respiration or fermentation. Strain JAM-BA0302T was a piezotolerant bacterium that could grow at pressures as high as 25 MPa under aerobic conditions and 10 MPa under anaerobic conditions. The G+C content of the genomic DNA was 43.2 mol%. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain JAM-BA0302T was most closely related to yet-undescribed strains recently isolated from various marine sedimentary environments (>99.6 % 16S rRNA gene sequence similarity) and was moderately related to Sunxiuqinia elliptica DQHS-4T, isolated from a sea cucumber farm sediment (95.5 % 16S rRNA gene sequence similarity) within the Bacteroidetes . The phylogenetic analysis suggested that the isolate should belong to the genus Sunxiuqinia . However, low DNA–DNA relatedness (<11 %) and many physiological and molecular properties differentiated the isolate from those previously described. We propose here a novel species of the genus Sunxiuqinia , with the name Sunxiuqinia faeciviva sp. nov. The type strain is JAM-BA0302T ( = JCM 15547T  = NCIMB 14481T). %U https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijs.0.044065-0