Halomonas utahensis

(aka Pseudomonas halophila)

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

Overview

  • Halomonas utahensis, (aka Pseudomonas halophila), is a Gram-negative, non-spore-forming, strictly aerobic, motile, rod-shaped bacterium. It has been detected in at least 1 gut microbiome compilation study or metastudy. The DNA G+C content is 57%. Halomonas utahensis is likely to be transient and not a long-term gut coloniser. (Fendrich1988)



  • This organism has been recovered from salt lakes from the USA. 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. Likely to be transient and not a long-term gut commensal.
    • QUIRKS
  • Borderline cold mesophile, with optimum growth temp of 28C. Unlikely gut coloniser.
    • GENERAL CHARACTERISTICS (Fendrich1988);
    Character Response
  • Substrates hydrolysed or digested:
  • aesculin; casein; gelatin; urea;
  • 🧂
  • Salt tolerance:
  • tolerates 0.1% salt; tolerates 20% salt; Grows optimally with 0.8% salt.
  • 💧
  • Bile tolerance:
  • Resistant to 0.4% bile
  • pH
  • Acidity tolerance:
  • tolerates pH 4.5; tolerates pH 9.6; Grows optimally at pH 7.0.
  • 🌡
  • Temperature tolerance:
  • grows at 4℃; grows at 37℃; Grows optimally at 28℃.
  • ⥅
  • Substrates assimilated or utilised:
  • arabinose; cellubiose; aesculin; ethanol; fructose; glucose; glycerol; lactose; maltose; mannitol; sorbitol; trehalose; xylose; alanine; acetate; caproate; citrate; lactate; nonanoate; propionate; pyruvate; succinate; Casamino acids;
  • Active enzymes:
  • catalase; β-galactosidase; oxidase; phenylalanine deaminase; urease;
    • SPECIAL FEATURES (Fendrich1988);
    Character Response
  • ✗
  • Metabolites not produced:
  • H₂S; indole;
  • ✗
  • Methyl red test:
  • not active
  • KCN growth:
  • growth observed (0.5%)
  • ±
  • Pigments:
  • reddish-brown
    • RESPONSE TO ANTIBIOTICS (Fendrich1988);
    Class Active Resistant
  • Penicillins:
  • ampicillin; penicillin G;
  • Macrolides:
  • erythromycin;
  • Tetracyclines:
  • tetracycline;
  • Quinolines:
  • nalidixic-acid;
  • Heterocycles:
  • chloramphenicol;

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Proteobacteria Class:  Gammaproteobacteria Order:  Oceanospirillales Family:  Halomonadaceae Genus:  Halomonas Alt. name:  Pseudomonas halophila Gram stain:  neg O2 Relation.:  strictly aerobic Spore:  No spore Motility:  Swimming Morphology:  Rod Pigment:  reddish-brown
    Health:  Unknown
    Source:  salt lakes from the USA
    DNA G+C(%):  57
    Opt. T:  28℃
    Low T(℃):  4(+)
    Mid T(℃):  37(+)
    NaCl 0.5-2%:  0.1(+)
    NaCl >6%:  20(+)
    Opt. pH:  7.0
    pH 4.2-5.9:  4.5(+)
    pH >8:  9.6(+)
    Bile reaction(%):  0.4(+)
    		Aesculin:  + Urea:  + Gelatin:  + Starch:  neg Casein:  +
    SUBSTRATE ASSIMILATION & UTILISATION
    Monosaccharide util/assim Oligosaccharide util/assim Other carboh. util/assim Amino acid util/assim Organic acid util/assim
    Arabinose:  + Fructose:  + Glucose:  + Mannose:  neg Xylose:  + Cellubiose:  + Lactose:  + Maltose:  + Trehalose:  + Dulcitol:  neg Aesculin:  + Ethanol:  + Glycerol:  + Inositol:  neg Mannitol:  + Methanol:  neg Propanol:  neg Salicin:  neg Sorbitol:  + Ala:  + Gly:  neg Acetate:  + Benzoate:  neg Butyrate:  neg Caproate:  + Caprylate:  neg Citrate:  + Formate:  neg Lactate:  + Malate:  neg Malonate:  neg Nonanoate:  + Propionate:  + Pyruvate:  + Succinate:  + Valerate:  neg
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Oxidase:  + Catalase:  + Urease:  + β-Galactosidase:  + ArgDH:  neg LysDC:  neg OrnDC:  neg Phe deaminase:  +
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		H2S:  neg Indole:  neg Pigment:  reddish-brown
    ANTIBIOTICS ℞
    Penicillins & Penems (μg/mL) Cephalosporins (μg/mL) Aminoglycosides (μg/mL) Macrolides (μg/mL) Quinolones (μg/mL)
    ampicillin:  S(10; disc)
    penicillin_G:  S(30U)
    erythromycin:  S(15; disc)
    nalidixic-acid:  S(30; disc)
    Tetracyclines (μg/mL) Vancomycin Class (μg/mL) Polypep/ketides (μg/mL) Heterocycles (μg/mL) Other (μg/mL)
    tetracycline:  R(30; disc)
    chloramphenicol:  S(30; disc)

    References

    SPECIFIC REFERENCES FOR HALOMONAS UTAHENSIS
  • Fendrich1988 - Halovibrio variabilis gen. nov. sp. nov., Pseudomonas halophila sp. nov. and a New Halophilic Aerobic Coccoid Eubacterium from Great Salt Lake, Utah, USA.
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    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR HALOMONAS UTAHENSIS
  • Lagier2016 - Culture of previously uncultured members of the human gut microbiota by culturomics.
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    • Added: January 14, 2022