Aeromonas trota

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

Overview

  • Aeromonas trota 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 trota is probably a rare gut coloniser. (Carnahan1991; Igbinosa2012; MartinCarnahan2005Bergey)



  • This organism has been recovered from human faeces, including pediatric diarrhoea. 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. A possible gut commensal.
    • GENERAL CHARACTERISTICS (Carnahan1991); (Igbinosa2012); (MartinCarnahan2005Bergey);
    Character Response
  • Substrates hydrolysed or digested:
  • gelatin;
  • 🧂
  • Salt tolerance:
  • doesn't tolerate 6.5% salt;
  • H+
  • Acid from carbohydrates usually produced:
  • glucose; mannose; amygdalin; cellubiose; mannitol;
  • ⥅
  • Substrates assimilated or utilised:
  • citrate;
  • Active enzymes:
  • arginine decarboxylase; lycine decarboxylase; oxidase;
    • SPECIAL FEATURES (Carnahan1991); (Igbinosa2012); (MartinCarnahan2005Bergey);
    Character Response
  • ✓
  • Metabolites produced:
  • H₂S; indole;
  • ✗
  • VP test:
  • not active
  • ✓
  • ONPG test:
  • active
  • ±
  • Haemolysis:
  • strain dependent
  • ✓
  • Nitrate:
  • reduced
  • ✓
  • NO3➔NO2:
  • reduced
    • RESPONSE TO ANTIBIOTICS (Carnahan1991); (Igbinosa2012); (MartinCarnahan2005Bergey);
    Class Active Resistant
  • Penicillins:
  • ampicillin; ampicillin-sulbactam; aztreonam; carbenicillin; imipenem; piperacillin; ticarcillin;
  • Cephalosporins:
  • cefotaxime; cefotetan; ceftazidime; cefuroxime;
  • cephalothin;
  • Tetracyclines:
  • tetracycline;
  • Quinolines:
  • ciprofloxacin; ofloxacin;
  • Aminoglycosides:
  • amikacin; gentamicin; tobramycin;
  • Heterocycles:
  • co-trimoxazole; trimethoprim-sulfamethoxazole;
  • Miscellaneous antibiotics:
  • colistin;
  • vibriostatin A 0 129;

  • Janda, J. M., & Abbott, S. L. (1998). Evolving concepts regarding the genus Aeromonas: an expanding Panorama of species, disease presentations, and unanswered questions. Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America, 27(2), 332–344.

    • 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:  human faeces, including pediatric diarrhoea
    NaCl >6%:  6.5(neg)
    		Aesculin:  neg Gelatin:  +
    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    L-Arabinose:  neg Glucose:  + Mannose:  + Rhamnose:  neg Cellubiose:  + Sucrose:  neg Amygdalin:  + Inositol:  neg Mannitol:  d(+) Sorbitol:  neg Gluconate:  neg Salicin:  neg
    SUBSTRATE ASSIMILATION & UTILISATION
    Monosaccharide util/assim Oligosaccharide util/assim Other carboh. util/assim Amino acid util/assim Organic acid util/assim
    Citrate:  +
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Oxidase:  + ArgDC:  + LysDC:  + OrnDC:  neg
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		H2S:  + Indole:  +
    ANTIBIOTICS ℞
    Penicillins & Penems (μg/mL) Cephalosporins (μg/mL) Aminoglycosides (μg/mL) Macrolides (μg/mL) Quinolones (μg/mL)
    ampicillin:  S(MIC50): <0.25, MIC90: -, RNG: (<0.25-2)
    amp-sulb:  Sens
    aztreonam:  S(MIC50): <8, MIC90: -, RNG: (<8)
    carbenicil:  S(MIC50): <16, MIC90: -, RNG: (<16)
    mezlocillin:  Var(MIC50): <16, MIC90: -, RNG: (<16)
    piperacillin:  S(MIC50): <8, MIC90: -, RNG: (<8)
    ticarcillin:  S(MIC50): <16, MIC90: -, RNG: (<16)
    tica-clav:  Var(MIC50): <16, MIC90: -, RNG: (<16)
    imipenem:  S(MIC50): <4, MIC90: -, RNG: (<4)
    cefazolin:  Var(MIC50): 16, MIC90: -, RNG: (<8->32)
    cefotaxime:  Sens
    cefotetan:  S(MIC50): <16, MIC90: -, RNG: (<16)
    cefoxitin:  Var(MIC50): 16, MIC90: -, RNG: (<2-16)
    ceftazidime:  S(MIC50): <8, MIC90: -, RNG: (<8)
    cefuroxime:  S(MIC50): <4, MIC90: -, RNG: (<4)
    cephalothin:  R(MIC50): >32, MIC90: -, RNG: (<2->32)
    amikacin:  S(MIC50): 4, MIC90: -, RNG: (<2-8)
    gentamicin:  S(MIC50): 15, MIC90: -, RNG: (<0.5-25)
    tobramycin:  Sens
    ciprofloxacin:  S(MIC50): <0.5, MIC90: -, RNG: (<0.5)
    ofloxacin:  Sens
    Tetracyclines (μg/mL) Vancomycin Class (μg/mL) Polypep/ketides (μg/mL) Heterocycles (μg/mL) Other (μg/mL)
    tetracycline:  S(MIC50): <1, MIC90: -, RNG: (<1-8)
    SXT:  S(MIC50): <10, MIC90: -, RNG: (<10)
    co-trimoxazole:  Sens
    colistin:  S(4; disc)
    vibriostat_129:  Res

    References

    SPECIFIC REFERENCES FOR AEROMONAS TROTA
  • Carnahan1991 - Aeromonas trota sp. nov., an ampicillin-susceptible species isolated from clinical specimens.
  • Collins1993 - Aeromonas enteropelogenes and Aeromonas ichthiosmia Are Identical to Aeromonas trota and Aeromonas veronii, Respectively, as Revealed by Small-Subunit rRNA Sequence Analysis.
  • Igbinosa2012 - Emerging Aeromonas Species Infections and Their Significance in Public Health.
  • MartinCarnahan2005Bergey - Bergey's manual of systematic bacteriology. Vol. 2, The Gammaproteobacteria Part B. Family Aeromonadaceae, Genus I. Aeromonas
  • ...............................
    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR AEROMONAS TROTA
  • RajilicStojanovic2014 - The first 1000 cultured species of the human gastrointestinal microbiota.
  • ...............................
    • GENERAL REFERENCES FOR AEROMONAS TROTA
  • Igbinosa2012 - Emerging Aeromonas Species Infections and Their Significance in Public Health.
    • Added: April 08, 2021