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Table 1 Experimental and organismal information examined in this study

From: Hydrogen and carbon isotope systematics in hydrogenotrophic methanogenesis under H2-limited and H2-enriched conditions: implications for the origin of methane and its isotopic diagnosis

Culture type T (°C) Head space H2 (Pa) CH4 substrate Organism information
Syntrophic bacteria Methanogen
Thermophilic coculture 55 <6.0 × 101 Butyrate Syntrophothermus lipocalidus (DSMZ 12681) Methanothermobacter thermautotrophicus strain ΔH (JCM10044)
Mesophilic coculturea 25 <1.0 × 101 Butyrate Syntrophomonas sp. Methanobacterium sp. strain MO-MB1
Thermophilic pure culture 60 <2.1 × 105 H2/CO2 Methanothermococcus okinawensis strain IH1 (JCM11175)
Mesophilic pure culture 30 <2.2 × 105 H2/CO2 Methanobacterium sp. strain MO-MB1
  1. aThe mesophilic coculture included a contaminant bacterium, Geosporobacter sp. (Saito et al. 2014)