title: Psychrobacter nivimaris sp. nov., a heterotrophic bacterium attached to organic particles isolated from the South Atlantic (Antarctica).
abstract: An aggregate-attached bacterium, strain 88/2-7, was isolated from samples of the Southern Ocean and investigated in a polyphasic approach. The novel marine isolate is an aerobic, Gram-negative, oxidase- and catalase-positive, non-motile short rod and grows in form of cream-colored colonies. Growth was observed at 5-35 degrees C. The bacterium tolerated concentrations of 0-13% (w/v) NaCl and utilized a relatively restricted spectrum of carbon sources. The analysis of the fatty acids revealed 18:1 cis 9 (18:1omega9c) as main fatty acid. The G+C content of the DNA was approximately 42 mol%. The sequence of the 16S rDNA assigned strain 88/2-7 to the gamma-subclass of Proteobacteria with a similarity of 99.65% to Psychrobacter proteolyticus (DSM 13887T). A DNA-DNA-hybridization study showed only 26.8% renaturation to the respective strain. Based on the morphological, physiological and molecular properties of the new isolate, the name Psychrobacter nivimaris sp. nov. (type strain 88/2-7T) is proposed.
authors.affiliation: Abt. Marine Mikrobiologie, Universität Bremen, Zentrum für Umweltforschung und Umwelttechnologie (UFT), Bremen, Germany. aheu@biotec.uni-bremen.de
authors.forename: Anja
authors.initials: A
authors.lastname: Heuchert
authors.forename: Frank Oliver
authors.initials: FO
authors.lastname: Glöckner
authors.forename: Rudolf
authors.initials: R
authors.lastname: Amann
authors.forename: Ulrich
authors.initials: U
authors.lastname: Fischer
mesh_terms: D000864:Antarctic Regions; D001422:Bacterial Adhesion; D015373:Bacterial Typing Techniques; D001482:Base Composition; D004275:DNA, Ribosomal; D008969:Molecular Sequence Data; D044007:Moraxellaceae / Q000145:classification* / Q000235:genetics / Q000502:physiology; D009693:Nucleic Acid Hybridization; D009930:Organic Chemicals; D010316:Particle Size; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S; D012623:Seawater / Q000382:microbiology*; D017422:Sequence Analysis, DNA
chemical_list: D004275:DNA, Ribosomal; D009930:Organic Chemicals; D012336:RNA, Ribosomal, 16S