Bifidobacterium merycicum

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

Overview

  • Bifidobacterium merycicum is a Gram-positive, non-spore-forming, strictly anaerobic, non-motile, pleiomorph rod-shaped bacterium. It has been detected in at least 1 gut microbiome compilation study or metastudy. The DNA G+C content is 59%. Bifidobacterium merycicum is probably a rare gut coloniser. (Biavati1991)



  • This organism has been recovered from rumen. 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. A possible gut commensal.
    • GENERAL CHARACTERISTICS (Biavati1991);
    Character Response
  • pH
  • Acidity tolerance:
  • doesn't tolerate pH 4.5; doesn't tolerate pH 8.0; Grows optimally at pH 6.5-6.9.
  • 🌡
  • Temperature tolerance:
  • doesn't grow at 25℃; doesn't grow at 45℃; Grows optimally at 38-42℃.
  • H+
  • Acid from carbohydrates usually produced:
  • arabinose; galactose; glucose; ribose; xylose; dextrin; starch; lactose; maltose; melibiose; raffinose; sucrose;
  • ±
  • Strain-dependent acid from carbs:
  • cellubiose;
    • SPECIAL FEATURES (Biavati1991);
    Character Response
  • ✓
  • Metabolites produced:
  • acetate; lactate;
  • ✗
  • Metabolites not produced:
  • propionate; butyrate; indole;
  • ✗
  • Nitrate:
  • not reduced

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Actinobacteria Class:  Actinobacteria Order:  Bifidobacteriales Family:  Bifidobacteriaceae Genus:  Bifidobacterium Gram stain:  + O2 Relation.:  strictly anaerobic Spore:  No spore Motility:  Sessile Morphology:  Pleiomorph rod
    Health:  Unknown
    Source:  rumen
    DNA G+C(%):  59
    Opt. T:  38-42℃
    Lower T(℃):  25(neg)
    High T(℃):  45(neg)
    Opt. pH:  6.5-6.9
    pH 4.2-5.9:  4.5(neg)
    pH 6.0-8.0:  8.0(neg)
    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    Arabinose:  + Fructose:  w Galactose:  + Glucose:  + Mannose:  neg Rhamnose:  neg Ribose:  + Xylose:  + Cellubiose:  d Lactose:  + Maltose:  + Melezitose:  neg Melibiose:  + Sucrose:  + Trehalose:  neg Dextrin:  + Inulin:  neg Starch:  + Glycerol:  neg Mannitol:  neg Sorbitol:  neg Gluconate:  neg Salicin:  neg
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Catalase:  neg
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		Acetate:  + Propionate:  neg Butyrate:  neg Lactate:  + Indole:  neg

    References

    SPECIFIC REFERENCES FOR BIFIDOBACTERIUM MERYCICUM
  • Biavati1991 - Bifidobacterium ruminantium sp. nov. and Bifidobacterium merycicum sp. nov. from the Rumens of Cattle.
  • ...............................
    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR BIFIDOBACTERIUM MERYCICUM
  • Byrd2020 - Stability and dynamics of the human gut microbiome and its association with systemic immune traits.
  • ...............................
    • Added: May 15, 2022