Growth on all of these sugars is enhanced in the presence of thiosulfate. Uses D-galactose, fructose, and sucrose poorly. Uses D-glucose, maltose, starch, and D-ribose. For heterotrophic growth under anaerobic conditions, complex organic material, such as yeast extract, peptone, or tryptone, is necessary. Growth occurs in the presence of 0.11 to 3.6% NaC1. Growth occurs at temperatures between 35 and 77☌ (optimum temperature, 75☌) and at pH values between 6.0 and 8.0 (optimum pH, 7.2). The rods tend to become large spheres in the stationary phase. The cells occur singly, in pairs, and in chains that are up to 12 cells long, depending on the growth phase. Each rod is surrounded by a sheath-like structure that balloons over the ends. The DNA base composition (G+C content) is about 30 mol%.ġ: Cells are gram-negative rods that have an average length of 3 to 4 µm and a width of about 0.5 µm. C28 to C34- dicarboxylic fatty acids are present. No isopranyl glycerol ether lipids detectable. No serological cross-reaction with Thermotoga maritima RNA polymerase antiserum. Resistant to 10 µg/ml rifampicin 100 µg/ml rifampicin inhibits growth. For heterotrophic growth under anaerobic conditions, complex organic material like yeast extract, peptone or tryptone is necessary. Growth observed between 0.11% and 3.6% NaCl. Growth between 35☌ and 77☌ (optimum: 75☌) and between pH 6.0 and 8.0 (optimum: 7.2). They occur singly, in pairs and in chains up to twelve cells in length, depending upon the growth-phase. The rods are surrounded by a sheath-like structure, ballooning over the ends. Cells are Gram-negative rods with an average length of 3-4 µm and a width of about 0.5 µm.
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