title: Shewanella dokdonensis sp. nov., isolated from seawater.
abstract: A novel bacterial strain, designated UDC329(T), was isolated from a sample of seawater collected at Dong-do, on the coast of Dokdo Island, in the East Sea of the Republic of Korea. The Gram-staining-negative, motile, facultatively anaerobic, non-spore-forming rods of the strain developed into dark orange-yellow colonies. The strain grew optimally between 25 and 30 °C, with 1% (w/v) NaCl and at pH 7. It grew in the absence of NaCl, but not with NaCl at >7% (w/v). The predominant menaquinone was MK-7, the predominant ubiquinones were Q-7 and Q-8, and the major fatty acids were iso-C(15:0) (33.52%) and C(17:1)ω8c (11.73%). The genomic DNA G+C content of strain UDC329(T) was 50.2 mol%. In phylogenetic analyses based on 16S rRNA and gyrB gene sequences, strain UDC329(T) was grouped with members of the genus Shewanella and appeared most closely related to Shewanella fodinae JC15(T) (97.9% 16S rRNA gene sequence similarity), Shewanella indica KJW27(T) (95.0%), Shewanella algae ATCC 51192(T) (94.8%), Shewanella haliotis DW01(T) (94.5%) and Shewanella chilikensis JC5(T) (93.9%). The level of DNA-DNA relatedness between strain UDC329(T) and S. fodinae JC15(T) was, however, only 27.4%. On the basis of phenotypic, genotypic and DNA-DNA relatedness data, strain UDC329(T) represents a novel species in the genus Shewanella, for which the name Shewanella dokdonensis sp. nov. is proposed. The type strain is UDC329(T) (=KCTC 22898(T)=DSM 23626(T)).
authors: School of Life Sciences, Research Institute for Ulleungdo and Dokdo Islands, Kyungpook National University, Daegu 702-701, Republic of Korea.
authors: Hye-Ri
authors: HR
authors: Sung
authors: Korea Research Institute of Bioscience and Biotechnology (KRIBB), PO Box 115, Yusong, Daejeon 306-809, Republic of Korea.
authors: Jung-Hoon
authors: JH
authors: Yoon
authors: School of Life Sciences, Research Institute for Ulleungdo and Dokdo Islands, Kyungpook National University, Daegu 702-701, Republic of Korea.
authors: Sa-Youl
authors: SY
authors: Ghim
mesh_terms: D000332:Aerobiosis; D000693:Anaerobiosis; D015373:Bacterial Typing Techniques; D001482:Base Composition; D016000:Cluster Analysis; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D006863:Hydrogen-Ion Concentration; D008124:Locomotion; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D010802:Phylogeny; D010860:Pigments, Biological / Q000378:metabolism; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D056910:Republic of Korea; D012623:Seawater / Q000382:microbiology*; D017422:Sequence Analysis, DNA; D020592:Shewanella / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification* / Q000502:physiology; D012965:Sodium Chloride / Q000378:metabolism; D013696:Temperature; D014451:Ubiquinone / Q000032:analysis; D024482:Vitamin K 2 / Q000032:analysis
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D010860:Pigments, Biological; D012336:RNA, Ribosomal, 16S; D024482:Vitamin K 2; D014451:Ubiquinone; D012965:Sodium Chloride