 | |||||||||||||||||||||||||
SelenomonasRANK: GenusTAXONOMY: Bacteria -> Terrabacteria group -> Firmicutes -> Negativicutes -> Selenomonadales -> Veillonellaceae -> Selenomonas OVERVIEW: Curved to helical rods, usually 0.9–1.1 × 3.0–6.0 µm. The ends are usually tapered and rounded to give short kidney- to crescent-shaped or vibrioid cells. Long cells and chains of cells are often helical. Capsules are not formed. Resting stages are not known. Gram-stain-negative. Motile with active tumbling; flagella (up to 16) are arranged linearly as a tuft near the center of the concave side in the area of cell fission. Strictly anaerobic. Optimum temperature 35–40°C; maximum 45°C; minimum 20–30°C. Chemoorganotrophic, having a fermentative type of metabolism. Carbohydrates and lactate can serve as fermentable substrates. Fermentation of glucose chiefly yields acetate, propionate, CO2, and/or lactate. Small amounts of H2 and succinate may be produced. Catalase negative.DNA G+C content (mol%): 40–61.Type species: Selenomonas sputigena This genus contains microbial species that can reside in the human gastrointestinal tract. [PMC 4262072]
| |||||||||||||||||||||||||