Roseburia Stanton and Savage 1983
General information
Description and emendation
Slightly curved rod-shaped cells (0.5 by 2.5 to 5 µm) occur singly and in pairs. Actively motile at 37°C in anaerobic broth by means of 20 to 35 flagella which are inserted along the concave side and occasionally along one end of the cell. The flagella appear as a single, subterminal fascicle when cells are examined by phase-contrast microscopy. Gram-negative, as determined by the staining reaction and by electron microscopy of ultrathin cell sections. Cells do not form spores. Optimum growth in VTY broth (final cell density, 5 × 108 cells per ml; population doubling time, 2h) at 37°C. Grows at 30°C but not at 22°C or 45°C. Cultured in VTY broth (medium containing volatile fatty acids, yeast extract, Trypticase peptone, inorganic salts, hemin, and glucose) under anaerobic conditions (95% N2 - 5% CO2 atmosphere). No growth occurs aerobically. Subsurface colonies in VTY medium supplemented with 0.7% Noble agar are 1 mm in diameter, brownish white, lens shaped, and occasionally surrounded by gas pockets which split the agar medium. Surface colonies are white, mucoid, granular in appearance, 1.5 to 3 mm in diameter, and circular with smooth edges. Butyrate is the major or sole acid product of glucose fermentation. Acetate is utilized during glucose fermentation. The products of growing cells (in micromoles per 100 µmol of glucose and 100 μmol of acetate utilized) are as follows: butyrate, 154; ethanol, 12; CO2, 240; H2, amount undetermined. Chemoorganotrophic, catalase negative, obligate anaerobe. The DNA G+C content of type species is 42.3 mol% (Tm). Isolated from mouse cecal mucosa.
Subdivision(s)
MID | Name | Rank | Taxon ID |
---|---|---|---|
MSG095296 | 'Roseburia bacterium' | Species | |
MSG071134 | 'Roseburia difficilis' | Species | |
MSG071130 | 'Roseburia lenta' | Species | |
MSG050822 | 'Roseburia muris' | Species | |
MSG071133 | 'Roseburia rectibacter' | Species | |
MSG071131 | 'Roseburia wangyibonis' | Species | |
MSG071132 | 'Roseburia xiaozhanis' | Species | |
M021702011042001 | Roseburia cecicola | Species | 842 |
M021702011042002 | Roseburia faecis | Species | 301302 |
M021702011042003 | Roseburia hominis | Species | 301301 |
M021702011042004 | Roseburia intestinalis | Species | 166486 |
M021702011042005 | Roseburia inulinivorans | Species | 360807 |