Bdellovibrio bacteriovorus

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

Overview

  • Bdellovibrio bacteriovorus is a Gram-negative, non-spore-forming, aerobic, motile, vibrio bacterium. The DNA G+C content is 50.4%. Bdellovibrio bacteriovorus is a common gut coloniser.



  • This organism has been recovered from freshwater, terrestrial, sewage, soil and the gut. Pathogenicity status unknown, or very unlikely to be pathogenic. A possible gut commensal. Robust growth can have positive consequences for gut health.
    • QUIRKS
  • Pathogen of Gram negative bacteria. Proposed as a probiotic. Detected in the mucosa of most healthy patients, with the highest bacterial count in the duodenum where oxygen is higher than the bowel. UC patients showed an almost complete absence of this bacterium.
    • GENERAL CHARACTERISTICS
    Character Response
  • Substrates hydrolysed or digested:
  • gelatin;
  • 🌡
  • Temperature tolerance:
  • grows at 35℃; Grows optimally at 28-30℃.
  • Active enzymes:
  • catalase; chymotrypsin; oxidase; trypsin;
    • SPECIAL FEATURES
    Character Response
  • ✗
  • NO3➔NO2:
  • not reduced
    • RESPONSE TO ANTIBIOTICS
    Class Active Resistant
  • Penicillins:
  • ampicillin; carbenicillin; penicillin;
  • Quinolines:
  • nalidixic-acid;
  • Aminoglycosides:
  • gentamicin; kanamycin;
  • Heterocycles:
  • metronidazole;
  • Vancomycins:
  • vancomycin;
  • Miscellaneous antibiotics:
  • colistin; polymyxin B;

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Bdellovibrionota Class:  Bdellovibrionia Order:  Bdellovibrionales Family:  Pseudobdellovibrionaceae Genus:  Bdellovibrio Gram stain:  neg O2 Relation.:  aerobic Spore:  No spore Motility:  Swimming Morphology:  Vibrio
    Health:   Positive
    Source:  freshwater, terrestrial, sewage, soil and the gut
    DNA G+C(%):  50.4
    Opt. T:  28-30℃
    Mid T(℃):  35(+)
    		Gelatin:  +
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Oxidase:  + Catalase:  + Chymotrypsin:  d(+) Trypsin:  + CystineAA:  neg ValAA:  neg Esterase(C4):  neg
    ANTIBIOTICS ℞
    Penicillins & Penems (μg/mL) Cephalosporins (μg/mL) Aminoglycosides (μg/mL) Macrolides (μg/mL) Quinolones (μg/mL)
    ampicillin:  S(2; disc)
    carbenicil:  S(100; disc)
    penicillin:  S(10U)
    gentamicin:  S(10; disc)
    kanamycin:  S(30; disc)
    nalidixic-acid:  R(5; disc)
    Tetracyclines (μg/mL) Vancomycin Class (μg/mL) Polypep/ketides (μg/mL) Heterocycles (μg/mL) Other (μg/mL)
    vancomycin:  R(30; disc)
    metronidazole:  R(80; disc)
    colistin:  R(10; disc)
    polymyxin_B:  R(300U)

    References

    SPECIFIC REFERENCES FOR BDELLOVIBRIO BACTERIOVORUS
  • Stolp 1963 - Bdellovibrio bacteriovorus gen. et sp. n., a predatory, ectoparasitic, and bacteriolytic microorganism.
  • Iebba2013 - Higher prevalence and abundance of Bdellovibrio bacteriovorus in the human gut of healthy subjects.
  • Bonfiglio2020 - Insight into the Possible Use of the Predator Bdellovibrio bacteriovorus as a Probiotic.
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    • Added: May 09, 2023