Some Characteristics of Two Morphotypes of Methanothrix soehngenii from Mesophilic Anaerobic Digesters

概要

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Six strains of acetotrophic methanogens, identified as Methanothrix soehngenii, were highly purlfied from mesophilic anaerobic digesters and their properties were investigated in comparison with a type strain M. soehngenii Opfikon. All strains were filamentons, exclusively acetotrophic, electrophoretically identical and had the same values for guanine plus cytosine content. However, two of them, one of which originated from an up-flow anaerobic sludge blanket (UASB), were remarkably filamentous and a number of filaments aggregated to form a cotton-like floc. In contrast with these strains, the others formed shorter filaments which were dispersed homogeneously. These indicate that two types of Methanothrix exist in anaerobic digesters.
公益社団法人日本生物工学会の論文
1990-10-25