PMID: 9531629Jun 6, 1998Paper

Methanobrevibacter filiformis sp. nov., A filamentous methanogen from termite hindguts

Archives of Microbiology
J R LeadbetterJ A Breznak

Abstract

A morphologically distinct, filamentous methanogen was isolated from hindguts of the subterranean termite, Reticulitermes flavipes (Kollar) (Rhinotermitidae), wherein it was part of the microbiota colonizing the hindgut wall. Individual filaments of strain RFM-3 were 0.23-0.28 micron in diameter and usually > 50 micron in length and aggregated into flocs that were often >/= 0.1 mm in diameter. Optimal growth of strain RFM-3 was obtained at pH 7.0-7.2 and 30 degrees C with a yeast-extract-supplemented, dithiothreitol-reduced medium in which cells produced stoichiometric amounts of methane from H2 + CO2. The morphology and gram-positive staining reaction of strain RFM-3, as well as its resistance to cell lysis by various chemical agents and its restriction to H2 + CO2 as an energy source, suggested that it was a member of the Methanobacteriaceae. The nucleotide sequence of the SSU-rRNA-encoding gene of strain RFM-3 confirmed this affiliation and also supported its recognition as a new species of Methanobrevibacter, for which the epithet filiformis is herewith proposed. Although M. filiformis was one of the dominant methanogens in R. flavipes collected from Woods Hole (Mass., USA), cells of similar morphology were not consistently...Continue Reading

Citations

Jan 5, 2005·Applied Microbiology and Biotechnology·Marianne LangeBirgitte Kiaer Ahring
Aug 1, 2013·Applied Microbiology and Biotechnology·Helmut KönigJürgen Fröhlich
Nov 15, 2000·FEMS Microbiology Reviews·A BruneH Cypionka
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