RT Journal Article SR Electronic(1) A1 Liu, Jiwen A1 Ren, Qiaomeng A1 Zhang, Yunhui A1 Li, Yuying A1 Tian, Xiaorong A1 Wu, Yanhong A1 Tian, Jiwei A1 Zhang, Xiao-HuaYR 2019 T1 Alcanivorax profundi sp. nov., isolated from deep seawater of the Mariana Trench JF International Journal of Systematic and Evolutionary Microbiology, VO 69 IS 2 SP 371 OP 376 DO https://doi.org/10.1099/ijsem.0.003145 PB Microbiology Society, SN 1466-5034, AB A Gram-stain-negative, rod-shaped, non-motile, strictly aerobic strain, designated as MTEO17T, was isolated from a 1000 m deep seawater sample of the Mariana Trench. Growth was observed at 10–45 °C (optimum, 37 °C), in the presence of 0.0–12.0 % NaCl (w/v; optimum, 3.0 %) and at pH 6.0–10.0 (optimum, pH 7.0–8.0). Phylogenetic analysis, based on the 16S rRNA gene sequence, revealed that strain MTEO17T belonged to the genus Alcanivorax and showed the highest sequence similarity of 97.9 % to Alcanivorax nanhaiticus MCCC 1A05629T. The estimated average nucleotide identity and DNA–DNA hybridization values between strain MTEO17T and A. nanhaiticus MCCC 1A05629T were 78.98 and 23.80 %, respectively. The significant dominant fatty acids were C16 : 0, summed feature 8 (C18 : 1ω6c and/or C18 : 1ω7c) and summed feature 3 (C16 : 1ω6c and/or C16 : 1ω7c). The polar lipids comprised two phosphatidylethanolamines, one phosphatidylglycerol, one unidentified phospholipid and four unidentified polar lipids. The DNA G+C content of strain MTEO17T was 57.5 %. On the basis of the polyphasic evidence, strain MTEO17T is proposed to represent a novel species of the genus Alcanivorax , for which the name Alcanivorax profundi sp. nov. is proposed. The type strain is MTEO17T (=KCTC 52694T=MCCC 1K03252T)., UL https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijsem.0.003145