Meiothermus silvanus

(aka Thermus silvanus)

Bacteria
General | Carbohydrate O/F | Substrate utilisation | Enzymes | Metabolites | Antibiotics

Overview

  • Meiothermus silvanus, (aka Thermus silvanus), is a Gram-negative, non-spore-forming, aerobic, non-motile, rod-shaped bacterium. It has been detected in at least 2 gut microbiome compilation studies or metastudies. The DNA G+C content is 63.6%. Meiothermus silvanus is likely to be transient and not a long-term gut coloniser. (Nobre1996; Tenreiro1995)



  • This organism has been recovered from hot springs, Portugal. The risk classification (www.baua.de) for this organism is 1, i.e., low risk of infection and spread. Pathogenicity status unknown, or very unlikely to be pathogenic. Likely to be transient and not a long-term gut commensal.
    • QUIRKS
  • A high minimum growth temperature (40C) suggests this is an unlikely gut coloniser.
    • GENERAL CHARACTERISTICS (Nobre1996); (Tenreiro1995);
    Character Response
  • Substrates hydrolysed or digested:
  • casein; gelatin; starch;
  • pH
  • Acidity tolerance:
  • doesn't tolerate pH 5; doesn't tolerate pH 10; Grows optimally at pH 8.0-8.5.
  • 🌡
  • Temperature tolerance:
  • grows at 40℃; grows at 65℃; Grows optimally at 55℃.
  • ⥅
  • Substrates assimilated or utilised:
  • fructose; galactose; glucose; glycerol; lactose; maltose; mannitol; mannose; melibiose; sorbitol; xylose; glutamate; proline; serine; pyruvate; glutamine; L-asparagine;
  • Active enzymes:
  • β-galactosidase; oxidase;
    • SPECIAL FEATURES
    Character Response
  • ✓
  • NO3➔NO2:
  • reduced
  • ±
  • Pigments:
  • orange-red

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Deinococcus-Thermus Class:  Deinococci Order:  Thermales Family:  Thermaceae Genus:  Meiothermus Alt. name:  Thermus silvanus Gram stain:  neg O2 Relation.:  aerobic Spore:  No spore Motility:  Sessile Morphology:  Rod Pigment:  orange-red
    Health:  Unknown
    Source:  hot springs, Portugal
    DNA G+C(%):  63.6
    Opt. T:  55℃
    Mid T(℃):  40(+)
    High T(℃):  65(+)
    Opt. pH:  8.0-8.5
    pH 4.2-5.9:  5(neg)
    pH >8:  10(neg)
    		Gelatin:  + Starch:  + Casein:  +
    SUBSTRATE ASSIMILATION & UTILISATION
    Monosaccharide util/assim Oligosaccharide util/assim Other carboh. util/assim Amino acid util/assim Organic acid util/assim
    L-Arabinose:  neg Fructose:  + Galactose:  + Glucose:  + Mannose:  + Rhamnose:  neg Xylose:  + Cellubiose:  neg Lactose:  + Maltose:  + Melibiose:  + Raffinose:  neg Sucrose:  neg Trehalose:  neg Erythritol:  neg Glycerol:  + Inositol:  neg Mannitol:  + Salicin:  neg Sorbitol:  + Glu:  + Pro:  + Ser:  + Acetate:  neg Citrate:  neg Pyruvate:  + Succinate:  neg
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Oxidase:  + Catalase:  neg α-Galactosidase:  neg β-Galactosidase:  +
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		Pigment:  orange-red

    References

    SPECIFIC REFERENCES FOR MEIOTHERMUS SILVANUS
  • Cassir2015 - Clostridium butyricum Strains and Dysbiosis Linked to Necrotizing Enterocolitis in Preterm Neonates
  • Nobre1996 - Transfer of Thermus ruber (Loginova et al. 1984), Thermus silvanus (Tenreiro et al. 1995), and Thermus chliarophilus (Tenreiro et al. 1995) to Meiothermus gen. nov. as Meiothermus ruber comb. nov., Meiothermus silvanus comb. nov., and Meiothermus chliarophilus comb. nov., Respectively, and Emendation of the Genus Thermus
  • Tenreiro1995 - Thermus silvanus sp. nov. and Thermus chliarophilus sp. nov., two new species related to thermus ruber but with lower growth temperatures
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    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR MEIOTHERMUS SILVANUS
  • Cassir2015 - Clostridium butyricum Strains and Dysbiosis Linked to Necrotizing Enterocolitis in Preterm Neonates
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    • Added: September 17, 2022