Tags: Archaea.
Methanobrevibacter filiformis is a species of methanogen archaeon. It was first isolated from the hindgut of the termite Reticulitermes flavipes. It is rod-shaped and possesses polar fibers. Its morphology gram-positive staining reaction resistance to cell lysis by chemical agents and narrow range of utilisable substracts are typical of species belonging to the family Methanobacteriaceae.