title: Algoriphagus trabzonensis sp. nov., isolated from freshwater, and emended description of Algoriphagus alkaliphilus.
abstract: A Gram-staining-negative, non-motile, catalase- and oxidase-positive strain, designated MS7(T), was isolated from freshwater of a river near Trabzon, Turkey. Its taxonomy was investigated using a polyphasic approach. The strain grew optimally at 28 °C and pH 7.5 and in the presence of 2.0% NaCl. 16S rRNA gene sequence analysis revealed that the strain belonged to the genus Algoriphagus; strain MS7(T) showed highest sequence similarity to the type strains of Algoriphagus alkaliphilus (97.3%), Algoriphagus terrigena (96.8%), Algoriphagus jejuensis (96.2%), Algoriphagus boritolerans (96.1%) and Algoriphagus aquatilis (95.8%). The major fatty acids of strain MS7(T) were iso-C15 : 0 (30.14%) and summed future 9 (10-methyl C16 : 0 and/or iso-C17 : 1ω9c 18.75%). Polar lipid analysis revealed phosphatidylethanolamine, a variety of unidentified lipids, an unidentified aminophospholipid, an unidentified phospholipid and an unidentified aminolipid. The major isoprenoid quinone was MK-7.The DNA G+C content of MS7(T) was 41.6 mol%, a value consistent with that of members of the genus Algoriphagus. The level of DNA-DNA relatedness between strain MS7(T) and A. alkaliphilus LMG 22694(T) was 41%, which is clearly below the 70% threshold accepted for species delineation. Thus, our results support the placement of strain MS7(T) within a separate and previously unrecognized species. On the basis of these data, the strain is considered to represent a novel species of the genus Algoriphagus, for which the name Algoriphagus trabzonensis sp. nov. is proposed. The type strain is MS7(T) ( = NCCB 100372(T) = LMG 26290(T)). An emended description of A. alkaliphilus is also provided.
authors.affiliation: Faculty of Sciences Department of Molecular Biology and Genetic, Karadeniz Technical University, 61080 Trabzon, Turkey.
authors.forename: Kadriye
authors.initials: K
authors.lastname: Inan
authors.affiliation: Karadeniz Technical University Faculty of Sciences Department of Biology, , 61080 Trabzon, Turkey.
authors.forename: Murat
authors.initials: M
authors.lastname: Kacagan
authors.affiliation: Karadeniz Technical University Faculty of Sciences Department of Biology, , 61080 Trabzon, Turkey.
authors.forename: Aysegul
authors.initials: A
authors.lastname: Ozer
authors.affiliation: Karadeniz Technical University Faculty of Sciences Department of Biology, , 61080 Trabzon, Turkey.
authors.forename: Ali
authors.initials: A
authors.lastname: Osman Belduz
authors.affiliation: Karadeniz Technical University Faculty of Sciences Department of Biology, , 61080 Trabzon, Turkey.
authors.forename: Sabriye
authors.initials: S
authors.lastname: Canakci
mesh_terms: D015373:Bacterial Typing Techniques; D041963:Bacteroidetes / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D001482:Base Composition; D004269:DNA, Bacterial / Q000235:genetics; D005227:Fatty Acids / Q000737:chemistry; D005618:Fresh Water / Q000382:microbiology*; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D010743:Phospholipids / Q000737:chemistry; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D014421:Turkey; D024482:Vitamin K 2 / Q000031:analogs & derivatives / Q000737:chemistry
chemical_list: D004269:DNA, Bacterial; D005227:Fatty Acids; D010743:Phospholipids; D012336:RNA, Ribosomal, 16S; D024482:Vitamin K 2; C062629:menaquinone 7