title: Nitratireductor kimnyeongensis sp. nov., isolated from seaweed.
abstract: An aerobic, Gram-negative, catalase-positive, oxidase-positive bacterium was isolated from a dried seaweed sample collected from Kimnyeong Beach in Jeju, Republic of Korea. The cells of the organism, designated strain KY 101(T), were rods (0.4-0.5x1.2-2.7 mum) and motile by means of flagella. The colonies of the cells were 0.5-1 mm in diameter, smooth, circular, convex and light yellow in colour. The isolate showed growth at 10-40 degrees C, pH 6.1-12.1 and in the presence of 7 % NaCl. The major fatty acid was summed feature C(18 : 1)omega7c/C(18 : 1)omega9c/C(18 : 1)omega12t and the DNA G+C content was 60.4 mol%. 16S rRNA gene sequence studies showed that the organism was phylogenetically related to the family Phyllobacteriaceae, with Nitratireductor aquibiodomus (99.1 % sequence similarity) as the closest neighbour. The level of DNA-DNA relatedness between strain KY 101(T) and N. aquibiodomus DSM 15645(T) was 18.4-23.2 % (duplicate measurements). The combination of phenotypic differences and DNA-DNA hybridization data supports the suggestion that the isolate represents a novel species of the genus Nitratireductor, for which the name Nitratireductor kimnyeongensis sp. nov. is proposed. The type strain is strain KY 101(T) (=KACC 11904(T)=JCM 14851(T)).
authors.affiliation: Department of Science Education, Cheju National University, Jeju 690-756, Republic of Korea.
authors.forename: Hye Soon
authors.initials: HS
authors.lastname: Kang
authors.forename: Hong Lim
authors.initials: HL
authors.lastname: Yang
authors.forename: Soon Dong
authors.initials: SD
authors.lastname: Lee
mesh_terms: D020561:Alphaproteobacteria / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification / Q000502:physiology; D015373:Bacterial Typing Techniques; D001482:Base Composition; D002374:Catalase / Q000378:metabolism; D004269:DNA, Bacterial / Q000032:analysis / Q000235:genetics; D020459:Genes, rRNA; D007723:Korea; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D010088:Oxidoreductases / Q000378:metabolism; D010641:Phenotype; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012624:Seaweed / Q000382:microbiology*; D017422:Sequence Analysis, DNA; D013045:Species Specificity
chemical_list: D004269:DNA, Bacterial; D012336:RNA, Ribosomal, 16S; D010088:Oxidoreductases; D002374:Catalase