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Table 1 Phenotypic characteristics of strain TLO in comparison with phylogenetically closely related species

From: Isolation and characterization of a new CO-utilizing strain, Thermoanaerobacter thermohydrosulfuricus subsp. carboxydovorans, isolated from a geothermal spring in Turkey

Feature Strain TLO T. thermohydrosulfuricus T. siderophilus
Source Geothermal spring Extraction juices of beet sugar factory Hydrothermal vent
Gram reaction + V +
Spores + + +
Temperature range (oC) 40–80 40–78 39–78
Optimum temperature (°C) 68–70 65–68 69–71
pH range 4.5–9 5–9 4.8–8.2
Optimum pH 6.3–6.8 6.9–7.5 6.3–6.5
DNA G + C content (mol%) 35.1 37.6 32
Reduction of arsenate + +a +a
Growth substrates
 Ribose + + NR
 Mannitol W Wa V
 Starch + + +
 Pectin + + NR
 Xylan + +
 Carboxymethylcellulose W +
 CO (up to 25% v/v) + a b
  1. Data for reference species were obtained from Klaushofer and Parkkinen (1965) and Slobodkin et al. (1999)
  2. NR not reported, V variable, W weak
  3. aTested in this report; b Data from Gavrilov et al. (2003)