Methanococcus thermolithotrophicus, a novel thermophilic lithotrophic methanogen

  title={Methanococcus thermolithotrophicus, a novel thermophilic lithotrophic methanogen},
  author={Harald Huber and M. Thomm and Helmut K{\"o}nig and Gesa Thies and K. O. Stetter},
  journal={Archives of Microbiology},
An autotrophic thermophilic motile coccoid methanogen was isolated from geothermally heated sea sediments close to Naples, Italy. Growth occurs on H2/CO2 and on formate between 30 and 70°C with an optimum at 65°C. The optimal doubling time is only 55 min. The NaCl-concentration ranges from 1.3% to 8.3% with an optimum around 4%. By its G+C-content of 31.3 mol%, its subunit envelope, and by DNA-RNA hybridization the new isolate is clearly defined to be a member of the genusMethanococcus. We name… CONTINUE READING