title: Shewanella irciniae sp. nov., a novel member of the family Shewanellaceae, isolated from the marine sponge Ircinia dendroides in the Bay of Villefranche, Mediterranean Sea.
abstract: Strain UST040317-058(T), comprising non-pigmented, rod-shaped, facultatively anaerobic, Gram-negative cells that are motile by means of single polar flagella, was isolated from the surface of a marine sponge (Ircinia dendroides) collected from the Mediterranean Sea. Comparative 16S rRNA gene sequence-based phylogenetic analysis placed the strain in a separate cluster with the recognized bacterium Shewanella algae IAM 14159(T), with which it showed a sequence similarity of 95.0 %. The sequence similarity between strain UST040317-058(T) and its other (six) closest relatives ranged from 91.6 to 93.8 %. Strain UST040317-058(T) showed oxidase, catalase and gelatinase activities. The typical respiratory quinones for shewanellas, menaquinone MK-7 and ubiquinones Q-7 and Q-8, were also detected. The predominant fatty acids in strain UST040317-058(T) were i15 : 0, 16 : 0, 17 : 1omega8c and summed feature 3 (comprising i15 : 0 2-OH and/or 16 : 1omega7c), altogether representing 56.9 % of the total. The DNA G+C content was 39.9 mol%. The strain could be differentiated from other Shewanella species by its inability to reduce nitrate or produce H(2)S and by 10-22 additional phenotypic characteristics. On the basis of the phylogenetic and phenotypic data presented in this study, strain UST040317-058(T) represents a novel species in the genus Shewanella, for which the name Shewanella irciniae sp. nov. is proposed. The type strain is UST040317-058(T) (=JCM 13528(T)=NRRL B-41466(T)).
authors.affiliation: Coastal Marine Laboratory/Department of Biology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, People's Republic of China.
authors.forename: On On
authors.initials: OO
authors.lastname: Lee
authors.affiliation: Division of Environmental Science and Engineering, The National University of Singapore, Singapore.
authors.forename: Stanley C K
authors.initials: SCK
authors.lastname: Lau
authors.affiliation: Coastal Marine Laboratory/Department of Biology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, People's Republic of China.
authors.forename: Mandy M Y
authors.initials: MMY
authors.lastname: Tsoi
authors.affiliation: Coastal Marine Laboratory/Department of Biology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, People's Republic of China.
authors.forename: Xiancui
authors.initials: X
authors.lastname: Li
authors.affiliation: Coastal Marine Laboratory/Department of Biology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, People's Republic of China.
authors.forename: Ioulia
authors.initials: I
authors.lastname: Plakhotnikova
authors.affiliation: Coastal Marine Laboratory/Department of Biology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, People's Republic of China.
authors.forename: Sergey
authors.initials: S
authors.lastname: Dobretsov
authors.affiliation: Coastal Marine Laboratory/Department of Biology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, People's Republic of China.
authors.forename: Madeline C S
authors.initials: MCS
authors.lastname: Wu
authors.affiliation: Department of Biology, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong SAR, People's Republic of China.
authors.forename: Po-Keung
authors.initials: PK
authors.lastname: Wong
authors.affiliation: Microbial Ecology and Biogeochemistry Group, Laboratoire d'Océanographie de Villefranche-sur-Mer, Villefranche-sur-Mer, France.
authors.forename: Markus
authors.initials: M
authors.lastname: Weinbauer
authors.affiliation: Coastal Marine Laboratory/Department of Biology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, People's Republic of China.
authors.forename: Pei-Yuan
authors.initials: PY
authors.lastname: Qian
mesh_terms: D000818:Animals; D015373:Bacterial Typing Techniques; D004269:DNA, Bacterial / Q000032:analysis; D004275:DNA, Ribosomal / Q000032:analysis; D020459:Genes, rRNA; D008522:Mediterranean Sea; D008969:Molecular Sequence Data; D010641:Phenotype; D010802:Phylogeny; D011161:Porifera / Q000382:microbiology*; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D020592:Shewanella / Q000737:chemistry / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D012336:RNA, Ribosomal, 16S