title: Psychrobacter fulvigenes sp. nov., isolated from a marine crustacean from the Sea of Japan.
abstract: Two novel Psychrobacter-like bacteria, strains KC 40(T) and KC 65, were isolated from a marine crustacean specimen collected from the Sea of Japan, and were characterized by using a polyphasic approach. Strains were selected on the basis of their ability to produce black-brown diffusible pigments on commonly used organic media, which appears to be a unique characteristic of recognized members of the genus Psychrobacter. Phylogenetic analyses based on both 16S rRNA and gyrB gene sequences showed that the novel isolates formed a separate cluster within the genus Psychrobacter. Strains KC 40(T) and KC 65 shared highest levels of 16S rRNA gene sequence similarity with Psychrobacter urativorans DSM 14009(T) (98.0 %), Psychrobacter pulmonis CCUG 46240(T) (97.9 %), Psychrobacter cibarius JG-219(T) (97.9 %), Psychrobacter faecalis Iso-46(T) (97.8 %), Psychrobacter aquimaris SW-210(T) (97.6 %), Psychrobacter namhaensis SW-242(T) (97.6 %) and Psychrobacter nivimaris 88/2-7(T) (97.6 %). DNA-DNA hybridization experiments revealed 84 % DNA-DNA relatedness between strains KC 40(T) and KC 65 but much lower levels of relatedness (7-35 %) between the novel strains and the type strains of recognized Psychrobacter species, confirming their assignment to a single novel species of the genus Psychrobacter. The two novel strains could be distinguished from recognized species of the genus Psychrobacter based on a combination of physiological and biochemical characteristics. On the basis of phenotypic and molecular properties, strains KC 40(T) and KC 65 are considered to represent a novel species of the genus Psychrobacter, for which the name Psychrobacter fulvigenes sp. nov. is proposed. The type strain is KC 40(T) (=KMM 3954(T)=NRIC 0746(T)=JCM 15525(T)).
authors.affiliation: Pacific Institute of Bioorganic Chemistry, Far-Eastern Branch, Russian Academy of Sciences, Prospect 100 Let Vladivostoku 159, 690022 Vladivostok, Russia. lro@piboc.dvo.ru
authors.forename: Lyudmila A
authors.initials: LA
authors.lastname: Romanenko
authors.forename: Naoto
authors.initials: N
authors.lastname: Tanaka
authors.forename: Galina M
authors.initials: GM
authors.lastname: Frolova
authors.forename: Valery V
authors.initials: VV
authors.lastname: Mikhailov
mesh_terms: D000818:Animals; D015373:Bacterial Typing Techniques; D001482:Base Composition; D003445:Crustacea / Q000382:microbiology*; D027081:DNA Gyrase / Q000235:genetics; D004269:DNA, Bacterial / Q000032:analysis; D004275:DNA, Ribosomal / Q000032:analysis; D007564:Japan; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D009792:Oceans and Seas; D010641:Phenotype; D010802:Phylogeny; D016133:Polymerase Chain Reaction / Q000379:methods; D044096:Psychrobacter / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification* / Q000502:physiology; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012623:Seawater; D017422:Sequence Analysis, DNA; D013045:Species Specificity
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D012336:RNA, Ribosomal, 16S; D027081:DNA Gyrase