Abstract
A.ce'to.fil.a.men'tum. L. n. acetum vinegar; L. neut. n. filamentum a spun thread; N.L. neut. n. Acetofilamentum an acetate-producing, filamentous, threadlike bacterium.
Bacteroidetes / Bacteroidia / Bacteroidales / Bacteroidaceae / Acetofilamentum
Straight rods. Single cells are 0.18–0.3 μm × 2–8 μm. Filaments of more than 100 μm in length may be formed. Gram-stain-negative. Nonsporeforming. Nonmotile. Temperature range, 25–40°C; optimum, 35–38°C. pH range, 6.5–9.0; optimum, 7.3–8.0. Yeast extract is required. Chemo-organotrophic. Anaerobic, having a strictly fermentative type of metabolism. Hexoses are fermented by glycolysis to acetate and H2 (in a molar ratio of 1:2) and CO2 . Isolated from sewage sludge fermenters.
DNA G+C content (mol%): ~47 (T m).
Type species: Acetofilamentum rigidum Dietrich, Weiss, Fiedler and Winter 1989, 93VP (Effective publication: Dietrich, Weiss, Fiedler and Winter 1988b, 273.).
