title: Porphyrobacter dokdonensis sp. nov., isolated from sea water.
abstract: A Gram-negative, non-motile, non-spore-forming, slightly halophilic bacterial strain, DSW-74T, was isolated from sea water off the island of Dokdo, Korea, and its taxonomic position was investigated by a polyphasic study. Strain DSW-74T grew optimally at 37 degrees C and in the presence of 2 % (w/v) NaCl. It contained Q-10 as the predominant ubiquinone and C17 : 1omega6c and C18 : 1omega7c as the major fatty acids. Its DNA G+C content was 65.8 mol%. Phylogenetic analyses based on 16S rRNA gene sequences revealed that strain DSW-74T was most closely related to Porphyrobacter species. Similarity values between the 16S rRNA gene sequence of strain DSW-74T and those of the type strains of recognized Porphyrobacter species and of Erythromicrobium ramosum were in the range 97.4-98.7 %. Strain DSW-74T exhibited 16S rRNA gene sequence similarity values of <97.5 % to recognized Erythrobacter species and the other species used in the phylogenetic analysis. DNA-DNA relatedness levels and differential phenotypic properties made it possible to categorize strain DSW-74T as representing a novel Porphyrobacter species. On the basis of the taxonomic data presented, it is proposed that DSW-74T (=KCTC 12395T=DSM 17193T) should be classified in the genus Porphyrobacter as the type strain of a novel species, Porphyrobacter dokdonensis sp. nov.
authors.affiliation: Korea Research Institute of Bioscience and Biotechnology (KRIBB), PO Box 115, Yusong, Taejon, Korea.
authors.forename: Jung-Hoon
authors.initials: JH
authors.lastname: Yoon
authors.affiliation: Korea Research Institute of Bioscience and Biotechnology (KRIBB), PO Box 115, Yusong, Taejon, Korea.
authors.forename: So-Jung
authors.initials: SJ
authors.lastname: Kang
authors.affiliation: Korea Research Institute of Bioscience and Biotechnology (KRIBB), PO Box 115, Yusong, Taejon, Korea.
authors.forename: Mi-Hwa
authors.initials: MH
authors.lastname: Lee
authors.affiliation: Korea Research Institute of Bioscience and Biotechnology (KRIBB), PO Box 115, Yusong, Taejon, Korea.
authors.forename: Hyun Woo
authors.initials: HW
authors.lastname: Oh
authors.affiliation: Korea Research Institute of Bioscience and Biotechnology (KRIBB), PO Box 115, Yusong, Taejon, Korea.
authors.forename: Tae-Kwang
authors.initials: TK
authors.lastname: Oh
mesh_terms: D020561:Alphaproteobacteria / Q000145:classification* / Q000166:cytology / Q000302:isolation & purification* / Q000502:physiology; D015373:Bacterial Typing Techniques; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D005227:Fatty Acids / Q000032:analysis / Q000302:isolation & purification; D020459:Genes, rRNA; D006131:Growth Inhibitors / Q000494:pharmacology; D008969:Molecular Sequence Data; D009068:Movement; D009693:Nucleic Acid Hybridization; D010802:Phylogeny; D011809:Quinones / Q000032:analysis / Q000302:isolation & purification; D012329:RNA, Bacterial / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012623:Seawater / Q000382:microbiology*; D012965:Sodium Chloride / Q000494:pharmacology; D013171:Spores, Bacterial; D013696:Temperature; D014871:Water Microbiology
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D005227:Fatty Acids; D006131:Growth Inhibitors; D011809:Quinones; D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S; D012965:Sodium Chloride