Original Papers

Archives of Microbiology

, Volume 132, Issue 1, pp 47-50

First online:

Methanococcus thermolithotrophicus, a novel thermophilic lithotrophic methanogen

  • Harald HuberAffiliated withLehrstuhl für Mikrobiologie, Universität Regensburg
  • , Michael ThommAffiliated withLehrstuhl für Mikrobiologie, Universität Regensburg
  • , Helmut KönigAffiliated withLehrstuhl für Mikrobiologie, Universität Regensburg
  • , Gesa ThiesAffiliated withLehrstuhl für Zoologie, Universität Regensburg
  • , Karl O. StetterAffiliated withLehrstuhl für Mikrobiologie, Universität Regensburg

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

Abstract

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 itMethanococcus thermolithotrophicus.

Key words

Methanogens Archaebacteria Autotrophic Thermophilic