Aeromonas schubertii

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

Overview

  • Aeromonas schubertii is a Gram-negative, non-spore-forming, facultatively anaerobic, motile, rod-shaped bacterium. It has been detected in at least 1 gut microbiome compilation study or metastudy. Aeromonas schubertii is unlikely to be a gut coloniser. (MartinCarnahan2005Bergey; HickmanBrenner1988)



  • This organism has been recovered from clinical sources (abscess, blood, wound, drainage). The risk classification (www.baua.de) for this organism is 2, i.e., risk of individual infection, but low risk of spread. Can cause opportunistic infections, particularly in immunocompromised people. Likely to be transient and not a long-term gut commensal.
    • QUIRKS
  • Mannitol-negative fermentation. Unlikely gut coloniser.
    • GENERAL CHARACTERISTICS (MartinCarnahan2005Bergey); (HickmanBrenner1988);
    Character Response
  • Substrates hydrolysed or digested:
  • DNA;
  • 🧂
  • Salt tolerance:
  • tolerates 0-1% salt; doesn't tolerate 6% salt;
  • 🌡
  • Temperature tolerance:
  • grows at 36℃;
  • H+
  • Acid from carbohydrates usually produced:
  • galactose; glucose; mannose; maltose; trehalose;
  • ±
  • Strain-dependent substrate utilisation:
  • acetate;
  • Active enzymes:
  • arginine dihydrolase; DNase; β-galactosidase; lipase; lycine decarboxylase; oxidase;
  • ±
  • Strain-dependent active enzymes:
  • phenylalanine deaminase;
    • SPECIAL FEATURES (MartinCarnahan2005Bergey); (HickmanBrenner1988);
    Character Response
  • ✗
  • Metabolites not produced:
  • H₂S; indole;
  • ✓
  • Methyl red test:
  • active
  • VP test:
  • activity is variable
  • ✓
  • ONPG test:
  • active
  • KCN growth:
  • inhibited
  • Haemolysis:
  • beta (weak)
  • ✓
  • NO3➔NO2:
  • reduced
  • ✗
  • Thiosulfate:
  • not reduced
    • RESPONSE TO ANTIBIOTICS (MartinCarnahan2005Bergey); (HickmanBrenner1988);
    Class Active Resistant
  • Penicillins:
  • ampicillin; carbenicillin; penicillin G;
  • Cephalosporins:
  • cephalothin;
  • Tetracyclines:
  • tetracycline;
  • Quinolines:
  • nalidixic-acid;
  • Aminoglycosides:
  • kanamycin;
  • Heterocycles:
  • chloramphenicol;
  • Miscellaneous antibiotics:
  • colistin;

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Proteobacteria Class:  Gammaproteobacteria Order:  Aeromonadales Family:  Aeromonadaceae Genus:  Aeromonas Gram stain:  neg O2 Relation.:  facultatively anaerobic Spore:  No spore Motility:  Swimming Morphology:  Rod
    Health:  Unknown
    Source:  clinical sources (abscess, blood, wound, drainage)
    Mid T(℃):  36(+)
    NaCl 0.5-2%:  0-1(+)
    NaCl >6%:  6(neg)
    		Aesculin:  neg Urea:  neg Gelatin:  w DNA:  + Tyrosine:  w
    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    L-Arabinose:  neg Galactose:  + Glucose:  + Mannose:  + Rhamnose:  neg Xylose:  neg Cellubiose:  neg Lactose:  neg Maltose:  + Melibiose:  neg Sucrose:  neg Trehalose:  + Adonitol:  neg D-Arabitol:  neg Dulcitol:  neg Erythritol:  neg Glycerol:  neg Inositol:  neg Mannitol:  neg Sorbitol:  neg Me-α-D-Glc:  neg Salicin:  neg
    SUBSTRATE ASSIMILATION & UTILISATION
    Monosaccharide util/assim Oligosaccharide util/assim Other carboh. util/assim Amino acid util/assim Organic acid util/assim
    Acetate:  d(w) Citrate:  w Malonate:  neg Mucate:  neg
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Oxidase:  + Urease:  neg β-Galactosidase:  + ArgDH:  + ArgDC:  w LysDC:  + OrnDC:  neg Phe deaminase:  d(w) DNAse:  + Lipase:  +
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		H2S:  neg Indole:  neg
    ANTIBIOTICS ℞
    Penicillins & Penems (μg/mL) Cephalosporins (μg/mL) Aminoglycosides (μg/mL) Macrolides (μg/mL) Quinolones (μg/mL)
    ampicillin:  R(10; disc)
    carbenicil:  R(100; disc)
    penicillin_G:  R(10U)
    cephalothin:  S(30; disc)
    kanamycin:  R(30; disc)
    streptomycin:  Var(MIC50): 10; disc), MIC90: Var(10; disc
    nalidixic-acid:  S(30; disc)
    Tetracyclines (μg/mL) Vancomycin Class (μg/mL) Polypep/ketides (μg/mL) Heterocycles (μg/mL) Other (μg/mL)
    tetracycline:  S(30; disc)
    chloramphenicol:  S(30; disc)
    sulfadiazine:  Var(MIC50): 250; disc), MIC90: Var(250; disc
    colistin:  S(10; disc)

    References

    SPECIFIC REFERENCES FOR AEROMONAS SCHUBERTII
  • MartinCarnahan2005Bergey - Bergey's manual of systematic bacteriology. Vol. 2, The Gammaproteobacteria Part B. Family Aeromonadaceae, Genus I. Aeromonas
  • HickmanBrenner1988 - Aeromonas schubertii, a new mannitol-negative species found in human clinical specimens.
  • ...............................
    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR AEROMONAS SCHUBERTII
  • Lagier2016 - Culture of previously uncultured members of the human gut microbiota by culturomics.
  • ...............................
    • Added: January 14, 2022