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SporocytophagaRANK: GenusTAXONOMY: Bacteria -> Bacteroidetes/Chlorobi group -> Bacteroidetes -> Cytophagia -> Cytophagales -> Cytophagaceae -> Sporocytophaga OVERVIEW: Flexible rods with rounded ends, 0.3–0.5 × 5–8 µm, occurring singly. Sphaeroplasts and distorted cells occur in older cultures. A resting stage, the microcyst, is formed. Motile by gliding. Stains Gram-negative. Chemo-organotrophs. Strict aerobe. Metabolism is respiratory, with molecular oxygen used as terminal electron acceptor. Cellobiose, cellulose, glucose and, for some strains, mannose are the only known sources of carbon and energy. Agar and chitin are not known to be metabolized. Either ammonium or nitrate ions, or peptone, urea or yeast extract, can serve as sole nitrogen source. Amino acids, peptones, yeast extract or nutrient agar (Difco) cannot serve as sole carbon and energy sources. No organic growth factor requirements are known. Catalase-positive. Temperature optimum: ~30°C. DNA G+C content (mol%): 36 (Bd). Type species: Sporocytophaga myxococcoides |