Veillonella magna

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

Overview

  • Veillonella magna is a Gram-negative, non-spore-forming, microaerophilic, non-motile, coccus bacterium. It has been detected in at least 1 gut microbiome compilation study or metastudy. Veillonella magna is probably a rare gut coloniser. (Kraatz2008)



  • This organism has been recovered from a pig mucosal jejunum, Germany. Pathogenicity status unknown, or very unlikely to be pathogenic. A possible gut commensal.
    • QUIRKS
  • Putrescine is required for growth.
    • GENERAL CHARACTERISTICS (Kraatz2008);
    Character Response
  • Substrates hydrolysed or digested:
  • mucin;
  • pH
  • Acidity tolerance:
  • tolerates pH 5.5; tolerates pH 9.5;
  • 🌡
  • Temperature tolerance:
  • grows at 21℃; grows at 45℃; Grows optimally at 37-40℃.
  • ⥅
  • Substrates assimilated or utilised:
  • lactate; putrescine; mucin;
  • Active enzymes:
  • alkaline phosphatase; acid phosphatase; arginine dihydrolase; His arylamidase; naphthol-ASBI-P;
    • SPECIAL FEATURES (Kraatz2008);
    Character Response
  • ✓
  • Metabolites produced:
  • acetate; propionate; H₂S;
  • ✗
  • Haemolysis:
  • absent
  • ✓
  • Nitrate:
  • reduced

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Firmicutes Class:  Negativicutes Order:  Veillonellales Family:  Veillonellaceae Genus:  Veillonella Gram stain:  neg O2 Relation.:  microaerophilic Spore:  No spore Motility:  Sessile Morphology:  Coccus
    Health:  Unknown
    Source:  a pig mucosal jejunum, Germany
    Opt. T:  37-40℃
    Lower T(℃):  21(+)
    High T(℃):  45(+)
    pH 4.2-5.9:  5.5(+)
    pH >8:  9.5(+)
    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    Fructose:  neg
    SUBSTRATE ASSIMILATION & UTILISATION
    Monosaccharide util/assim Oligosaccharide util/assim Other carboh. util/assim Amino acid util/assim Organic acid util/assim
    Lactate:  +
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Oxidase:  neg Catalase:  neg Ac-β-glcamnd:  neg α-Fucosidase:  neg α-Galactosidase:  neg β-Galactosidase:  neg α-Glucosidase:  neg β-Glucosidase:  neg β-Glucuronidase:  neg α-Mannosidase:  neg ArgDH:  + Chymotrypsin:  neg Trypsin:  neg CystineAA:  neg HisAA:  + LeuAA:  w AlkalineP:  + AcidP:  + Esterase(C4):  w EstLip(C8):  neg Lipase(C14):  neg
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		Acetate:  + Propionate:  + H2S:  +

    References

    SPECIFIC REFERENCES FOR VEILLONELLA MAGNA
  • Kraatz2008 - Veillonella magna sp. nov., isolated from the jejunal mucosa of a healthy pig, and emended description of Veillonella ratti.
  • ...............................
    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR VEILLONELLA MAGNA
  • De2020 - Metagenomic analysis of gut microbiome and resistome of diarrheal fecal samples from Kolkata, India, reveals the core and variable microbiota including signatures of microbial dark matter.
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    • Added: January 19, 2022