Streptococcus merionis

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

Overview

  • Streptococcus merionis is a Gram-positive, non-spore-forming, facultatively anaerobic, non-motile, coccus bacterium. It has been detected in at least 1 gut microbiome compilation study or metastudy. Streptococcus merionis is probably a rare gut coloniser. (Tappe2009)



  • This organism has been recovered from the oropharynge of a Mongolian jird. Pathogenicity status unknown, or very unlikely to be pathogenic. A possible gut commensal.
    • GENERAL CHARACTERISTICS (Tappe2009);
    Character Response
  • Substrates hydrolysed or digested:
  • aesculin; hippurate;
  • 🧂
  • Salt tolerance:
  • doesn't tolerate 6.5% salt;
  • 🌡
  • Temperature tolerance:
  • doesn't grow at 10℃; grows weakly at 45℃; Grows optimally at 37℃.
  • H+
  • Acid from carbohydrates usually produced:
  • glucose; inulin; starch; lactose; maltose; pullulan; raffinose; trehalose;
  • Active enzymes:
  • Ala-Phe-Pro arylamidase; arginine dihydrolase; β-galactosidase; β-glucosidase; β-glucuronidase; Leu arylamidase; β-mannosidase;
    • SPECIAL FEATURES (Tappe2009);
    Character Response
  • ✓
  • Metabolites produced:
  • lactate;
  • ✗
  • Metabolites not produced:
  • indole;
  • ✗
  • Haemolysis:
  • absent
  • ✗
  • Nitrate:
  • not reduced

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Firmicutes Class:  Bacilli Order:  Lactobacillales Family:  Streptococcaceae Genus:  Streptococcus Gram stain:  + O2 Relation.:  facultatively anaerobic Spore:  No spore Motility:  Sessile Morphology:  Coccus
    Health:  Unknown
    Source:  the oropharynge of a Mongolian jird
    Opt. T:  37℃
    Low T(℃):  10(neg)
    High T(℃):  45(w)
    NaCl >6%:  6.5(neg)
    		Aesculin:  + Urea:  neg Gelatin:  neg Hippurate:  +
    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    L-Arabinose:  neg Glucose:  + Rhamnose:  neg Ribose:  neg Lactose:  + Maltose:  + Melibiose:  neg Trehalose:  + Amygdalin:  neg Glycogen:  neg Inulin:  + Starch:  + Inositol:  neg Mannitol:  neg Sorbitol:  neg
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Oxidase:  neg Catalase:  neg Urease:  neg α-Galactosidase:  neg β-Galactosidase:  + β-Glucosidase:  + β-Glucuronidase:  + β-Mannosidase:  + ArgDH:  + AlaPheProAA:  + LeuAA:  + PyrrolidAA:  neg AlkalineP:  neg
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		Lactate:  + Indole:  neg

    References

    SPECIFIC REFERENCES FOR STREPTOCOCCUS MERIONIS
  • Tappe2009 - Streptococcus merionis sp. nov., isolated from Mongolian jirds (Meriones unguiculatus).
  • ...............................
    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR STREPTOCOCCUS MERIONIS
  • Forster2019 - A human gut bacterial genome and culture collection for improved metagenomic analyses.
  • ...............................
    • Added: February 09, 2022