title: Spongiibacter marinus gen. nov., sp. nov., a halophilic marine bacterium isolated from the boreal sponge Haliclona sp. 1.
abstract: Strain HAL40b(T) was isolated from the marine sponge Haliclona sp. 1 collected at the Sula Ridge off the Norwegian coast and characterized by physiological, biochemical and phylogenetic analyses. The isolate was a small rod with a polar flagellum. It was aerobic, Gram-negative and oxidase- and catalase-positive. Optimal growth was observed at 20-30 degrees C, pH 7-9 and in 3 % NaCl. Substrate utilization tests were positive for arabinose, Tween 40 and Tween 80. Enzyme tests were positive for alkaline phosphatase, esterase lipase (C8), leucine arylamidase, acid phosphatase, naphthol-AS-BI-phosphohydrolase and N-acetyl-beta-glucosaminidase. The predominant cellular fatty acid was C(17 : 1) omega8, followed by C(17 : 0) and C(18 : 1) omega7. Analysis by matrix-assisted laser desorption/ionization time-of-flight MS was used to characterize the strain, producing a characteristic low-molecular-mass protein pattern that could be used as a fingerprint for identification of members of this species. The DNA G+C content was 69.1 mol%. Phylogenetic analysis supported by 16S rRNA gene sequence comparison classified the strain as a member of the class Gammaproteobacteria. Strain HAL40b(T) was only distantly related to other marine bacteria including Neptunomonas naphthovorans and Marinobacter daepoensis (type strain sequence similarity >90 %). Based on its phenotypic, physiological and phylogenetic characteristics, it is proposed that the strain should be placed into a new genus as a representative of a novel species, Spongiibacter marinus gen. nov., sp. nov.; the type strain of Spongiibacter marinus is HAL40b(T) (=DSM 17750(T) =CCUG 54896(T)).
authors.affiliation: Berlin University of Technology, Environmental Microbiology Group, Franklinstrasse 29, Sekr. FR 1-2, D-10587 Berlin, Germany. i.graeber@web.de
authors.forename: Ingeborg
authors.initials: I
authors.lastname: Graeber
authors.forename: Ines
authors.initials: I
authors.lastname: Kaesler
authors.forename: Martin S
authors.initials: MS
authors.lastname: Borchert
authors.forename: Ralf
authors.initials: R
authors.lastname: Dieckmann
authors.forename: Thomas
authors.initials: T
authors.lastname: Pape
authors.forename: Rudi
authors.initials: R
authors.lastname: Lurz
authors.forename: Preben
authors.initials: P
authors.lastname: Nielsen
authors.forename: Hans
authors.initials: H
authors.lastname: von Döhren
authors.forename: Walter
authors.initials: W
authors.lastname: Michaelis
authors.forename: Ulrich
authors.initials: U
authors.lastname: Szewzyk
mesh_terms: D000818:Animals; D015373:Bacterial Typing Techniques; D001482:Base Composition; D004269:DNA, Bacterial / Q000032:analysis; D004275:DNA, Ribosomal / Q000032:analysis; D005227:Fatty Acids / Q000032:analysis; D020563:Gammaproteobacteria / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification / Q000502:physiology; D020459:Genes, rRNA; D047129:Haliclona / Q000382:microbiology*; D008969:Molecular Sequence Data; D009664:Norway; D010641:Phenotype; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012623:Seawater / Q000382:microbiology*; D017422:Sequence Analysis, DNA; D012965:Sodium Chloride; D013045:Species Specificity; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D005227:Fatty Acids; D012336:RNA, Ribosomal, 16S; D012965:Sodium Chloride