title: Victivallis vadensis gen. nov., sp. nov., a sugar-fermenting anaerobe from human faeces.
abstract: A novel strictly anaerobic, cellobiose-degrading bacterium, strain CelloT, was isolated from a human faecal sample by combining enrichments in liquid and soft-agar basal media. A noteworthy characteristic was its inability to grow on normal agar plates and in roll tubes. The cells were coccus shaped and non-motile, with an extracellular slime layer. Growth of strain CelloT occurred between 20 and 40degrees C, with optimal growth at 37 degrees C. The pH range for growth was 5-7.5 with an optimum at 6.5. In pure culture, strain CelloT could only grow on a variety of sugars. Glucose was converted to acetate, ethanol and H2. The doubling time on glucose was 0.5 h. In a syntrophic co-culture with Methanospirillum hungatei strain JF-1T, strain CelloT converted glucose to acetate and H2. The G+C content was 59.2 mol%. 16S rDNA analysis revealed that the closest relatives of strain CelloT were two uncultured bacteria from anaerobic digesters, both with 94% 16S rDNA sequence similarity. The closest cultured representatives belong to genera of the bacterial division 'Verrucomicrobia'. The name Victivallis vadensis gen. nov., sp. nov. is proposed for strain CelloT (=DSM 14823T =ATCC BAA-548T).
authors.affiliation: Wageningen Centre for Food Sciences, PO Box 557, 6700 AN Wageningen, The Netherlands.|Laboratory of Microbiology, Wageningen University, Hesselink van Suchtelenweg 4, 6703 CT Wageningen, The Netherlands.
authors.forename: Erwin G
authors.initials: EG
authors.lastname: Zoetendal
authors.affiliation: Laboratory of Microbiology, Wageningen University, Hesselink van Suchtelenweg 4, 6703 CT Wageningen, The Netherlands.
authors.forename: Caroline M
authors.initials: CM
authors.lastname: Plugge
authors.affiliation: Laboratory of Microbiology, Wageningen University, Hesselink van Suchtelenweg 4, 6703 CT Wageningen, The Netherlands.
authors.forename: Antoon D L
authors.initials: ADL
authors.lastname: Akkermans
authors.affiliation: Wageningen Centre for Food Sciences, PO Box 557, 6700 AN Wageningen, The Netherlands.|Laboratory of Microbiology, Wageningen University, Hesselink van Suchtelenweg 4, 6703 CT Wageningen, The Netherlands.
authors.forename: Willem M
authors.initials: WM
authors.lastname: de Vos
mesh_terms: D001482:Base Composition; D050260:Carbohydrate Metabolism; D002475:Cellobiose / Q000378:metabolism; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000235:genetics; D005243:Feces / Q000382:microbiology; D005285:Fermentation; D016964:Gram-Negative Anaerobic Cocci / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism*; D006801:Humans; D008969:Molecular Sequence Data; D010802:Phylogeny; D012329:RNA, Bacterial / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S; D002475:Cellobiose