Fermentation of methanethiol and dimethylsulfide by a newly isolated methanogenic bacterium |
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| Authors: | Kai Finster Yuichi Tanimoto Friedhelm Bak |
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| Institution: | 1. Department of Ecology and Genetics, University of ?rhus, Ny Munkegade, DK-8000, ?rhus C, Denmark
2. Max Planck-Institut für Terrestrische Mikrobiologie, Karl-von-Frisch Strasse, W-3550, Marburg, Federal Republic of Germany
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| Abstract: | From dilution series in defined mineral medium, a marine iregular coccoid methanogenic bacterium (strain MTP4) was isolated
that was able to grow on methanethiol as sole source of energy. The strain also grew on dimethylsulfide, mono-, di-, and trimethylamine,
methanol and acetate. On formate the organism produced methane without significant growth. Optimal growth on MT, with doubling
times of about 20 h, occurred at 30°C in marine medium. The isolate required p-aminobenzoate and a further not identified
vitamin. Strain MTP4 had a high tolerance to hydrogen sulfide but was very sensitive to mechanical forces or addition of detergents
such as Triton X-100 or sodium dodecylsulfate. Methanethiol was fermented by strain MTP4 according to the following equation:
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