title: Shewanella algicola sp. nov., a marine bacterium isolated from brown algae.
abstract: A Gram-stain-negative, aerobic, rod-shaped bacterium motile by means of a single polar flagella, strain ST-6T, was isolated from a brown alga (Sargassum thunbergii) collected in Jeju, Republic of Korea. Strain ST-6T was psychrotolerant, growing at 4-30 °C (optimum 20 °C). Phylogenetic analysis based on 16S rRNA and gyrB gene sequences revealed that strain ST-6T belonged to a distinct lineage in the genus Shewanella. Strain ST-6T was related most closely to Shewanella basaltis J83T, S. gaetbuli TF-27T, S. arctica IT12T, S. vesiculosa M7T and S. aestuarii SC18T, showing 96-97 % and 85-70 % 16S rRNA and gyrB gene sequences similarities, respectively. DNA-DNA relatedness values between strain ST-6T and the type strains of two species of the genus Shewanella were <22.6 %. The major cellular fatty acids (>5 %) were summed feature 3 (comprising C16:1ω7c and/ or iso-C15:0 2-OH), C16:0, iso-C13:0 and C17:1ω8c. The DNA G+C content of strain ST-6Twas 42.4 mol%, and the predominant isoprenoid quinones were menaquinone MK-7 and ubiquinones Q-7 and Q-8. On the basis of its phenotypic properties and phylogenetic distinctiveness, strain ST-6T is considered to represent a novel species of the genus Shewanella, for which the name Shewanella algicola sp. nov. is proposed. The type strain is ST-6T (= KCTC 23253T = JCM 31091T).
authors.affiliation: Department of Biology, Jeju National University, Jeju 690-756, Republic of Korea.|Jeju Biological Resource Co., Ltd, CTC Business Incubator Jeju Tourism College, Jeju 690-756, Republic of Korea.
authors.forename: Ji-Young
authors.initials: JY
authors.lastname: Kim
authors.affiliation: Department of Biology, Jeju National University, Jeju 690-756, Republic of Korea.
authors.forename: Han-Su
authors.initials: HS
authors.lastname: Yoo
authors.affiliation: Research Institute for Basic Science, Jeju National University, Jeju 690-756, Republic of Korea.
authors.forename: Dong-Heon
authors.initials: DH
authors.lastname: Lee
authors.affiliation: Department of Biology, Jeju National University, Jeju 690-756, Republic of Korea.|Department of Aquatic Life Medicine, Jeju National University, Jeju 690-756, Republic of Korea.
authors.forename: So-Hyun
authors.initials: SH
authors.lastname: Park
authors.affiliation: Jeju Biological Resource Co., Ltd, CTC Business Incubator Jeju Tourism College, Jeju 690-756, Republic of Korea.
authors.forename: Young-Ju
authors.initials: YJ
authors.lastname: Kim
authors.affiliation: Department of Biology, Jeju National University, Jeju 690-756, Republic of Korea.
authors.forename: Duck-Chul
authors.initials: DC
authors.lastname: Oh
mesh_terms: D015373:Bacterial Typing Techniques; D001482:Base Composition; D004269:DNA, Bacterial / Q000235:genetics; D005227:Fatty Acids / Q000737:chemistry; D005798:Genes, Bacterial; D009693:Nucleic Acid Hybridization; D000459:Phaeophyceae / Q000382:microbiology*; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D056910:Republic of Korea; D017422:Sequence Analysis, DNA; D020592:Shewanella / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D014451:Ubiquinone / Q000737:chemistry; D024482:Vitamin K 2 / Q000031:analogs & derivatives / Q000737:chemistry
chemical_list: D004269:DNA, Bacterial; D005227:Fatty Acids; D012336:RNA, Ribosomal, 16S; D024482:Vitamin K 2; D014451:Ubiquinone; C062629:menaquinone 7; C030778:ubiquinone 8; C030777:ubiquinone 7