title: Arcobacter pacificussp. nov., isolated from seawater of the South Pacific Gyre.
abstract: A Gram-stain-negative, rod-shaped, slightly curved, non-spore-forming strain, designated SW028T, was isolated from surface seawater (26° 29' S 137° 56' W) of the South Pacific Gyre during the Integrated Ocean Drilling Program Expedition 329. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain SW028Tbelonged to the genusArcobacterand it showed the highest sequence similarity withArcobacter molluscorumLMG 25693T(95.50 %). The dominant fatty acids of strain SW028Twere C18 : 1ω7c, C16 : 1ω7cand C16 : 0. The only respiratory quinone detected was menaquinone-6. The major polar lipids were phosphatidylglycerol, phosphatidylethanolamine and an unidentified phospholipid. The DNA G+C content was 27.1 mol%. The phylogenetic position of the novel strain was further confirmed by analysis of the housekeeping genesrpoB, gyrBandatpA. On the basis of phenotypic, chemotaxonomic and phylogenetic analyses, strain SW028Trepresents a novel species of the genusArcobacter, for which the nameArcobacter pacificusis proposed. The type strain is SW028T( = DSM 25018T= JCM 17857T= LMG 26638T= CGMCC NO.1.11011T).
authors.affiliation: College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China.
authors.forename: Zenghu
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China.
authors.forename: Cong
authors.initials: C
authors.lastname: Yu
authors.affiliation: College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China.
authors.forename: Xiaolei
authors.initials: X
authors.lastname: Wang
authors.affiliation: College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China.
authors.forename: Shaolan
authors.initials: S
authors.lastname: Yu
authors.affiliation: College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China.
authors.forename: Xiao-Hua
authors.initials: XH
authors.lastname: Zhang