Pragia fontium

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

Overview

  • Pragia fontium is a Gram-negative, non-spore-forming, facultatively anaerobic, motile, rod-shaped bacterium. The DNA G+C content is 46-47%. Pragia fontium is probably a rare gut coloniser. (Aldova1988; Schindler2005Bergey)



  • This organism has been recovered from human faeces (CCUG), and aquatic sources. 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 (Aldova1988); (Schindler2005Bergey);
    Character Response
  • Substrates hydrolysed or digested:
  • aesculin;
  • 🌡
  • Temperature tolerance:
  • grows at 4℃; grows at 37℃; doesn't grow at 42℃; Grows optimally at 22–37℃.
  • H+
  • Acid from carbohydrates usually produced:
  • galactose; glucose;
  • ±
  • Strain-dependent acid from carbs:
  • xylose; salicin;
  • ⥅
  • Substrates assimilated or utilised:
  • gluconate; citrate;
  • Active enzymes:
  • catalase;
    • SPECIAL FEATURES (Aldova1988); (Schindler2005Bergey);
    Character Response
  • ✓
  • Metabolites produced:
  • H₂S;
  • ✗
  • Metabolites not produced:
  • indole;
  • ±
  • Methyl red test:
  • active for most strains
  • ✗
  • VP test:
  • not active
  • KCN growth:
  • inhibited
  • ✗
  • Haemolysis:
  • absent
  • ✓
  • Nitrate:
  • reduced
  • ✓
  • NO3➔NO2:
  • reduced

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Proteobacteria Class:  Gammaproteobacteria Order:  Enterobacterales Family:  Budviciaceae Genus:  Pragia Gram stain:  neg O2 Relation.:  facultatively anaerobic Spore:  No spore Motility:  Swimming Morphology:  Rod
    Health:  Unknown
    Source:  human faeces (CCUG), and aquatic sources
    DNA G+C(%):  46-47
    Opt. T:  22–37℃
    Low T(℃):  4(+)
    Mid T(℃):  37(+)
    High T(℃):  42(neg)
    		Aesculin:  d(+) Urea:  neg Gelatin:  neg DNA:  neg Tyrosine:  neg
    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    L-Arabinose:  neg Galactose:  + Glucose:  + Mannose:  neg Rhamnose:  neg Sorbose:  neg Xylose:  d Cellubiose:  neg Lactose:  neg Maltose:  neg Melezitose:  neg Trehalose:  neg Inulin:  neg Starch:  neg Adonitol:  neg Dulcitol:  neg Erythritol:  neg Glycerol:  w Inositol:  w Mannitol:  neg Sorbitol:  neg Salicin:  d
    SUBSTRATE ASSIMILATION & UTILISATION
    Monosaccharide util/assim Oligosaccharide util/assim Other carboh. util/assim Amino acid util/assim Organic acid util/assim
    Gluconate:  + Acetate:  neg Citrate:  + Malonate:  neg
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Oxidase:  neg Catalase:  + Urease:  neg β-Galactosidase:  neg ArgDC:  neg LysDC:  neg OrnDC:  neg Phe deaminase:  neg DNAse:  neg Lipase:  neg
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		H2S:  + Indole:  neg

    References

    SPECIFIC REFERENCES FOR PRAGIA FONTIUM
  • Aldova1988 - Pragia fontium gen. nov., sp. nov. of the Family Enterobacteriaceae, Isolated from Water.
  • Schindler2005Bergey - Bergey's manual of systematic bacteriology. Vol. 2, The Gammaproteobacteria Part B. Family Enterobacteriaceae, Genus XXVIII. Pragia
  • ...............................
    • GENERAL REFERENCES FOR PRAGIA FONTIUM
  • CCUG - Culture Collection University of Gothenburg - Entire Collection
    • Added: July 12, 2021