Citrobacter rodentium

(aka Citrobacter species 9)

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

Overview

  • Citrobacter rodentium, (aka Citrobacter species 9), is a Gram-negative, non-spore-forming, facultatively anaerobic, non-motile, rod-shaped bacterium. It has been detected in at least 2 gut microbiome compilation studies or metastudies. Citrobacter rodentium is probably a rare gut coloniser. (Friederiksen2005Bergey; Schauer1995)



  • This organism has been recovered from rodents. The risk classification (www.baua.de) for this organism is 2, i.e., risk of individual infection, but low risk of spread (notes: opportunistic in immunocompromised patients). Could be a possible pathogen in humans, but unknown at this stage. A possible gut commensal.
    • GENERAL CHARACTERISTICS (Friederiksen2005Bergey); (Schauer1995);
    Character Response
  • Substrates hydrolysed or digested:
  • aesculin; urea;
  • H+
  • Acid from carbohydrates usually produced:
  • L-arabinose; glucose; mannose; rhamnose; sorbose; xylose; cellubiose; lactose; maltose; mucate; trehalose; adonitol; inositol; mannitol; salicin;
  • ⥅
  • Substrates assimilated or utilised:
  • N-acetylglucosamine; L-arabinose; cellubiose; fructose; galactose; gluconate; glucosamine; glucose; lactose; maltose; maltotriose; mannitol; mannose; rhamnose; ribose; sorbitol; trehalose; xylose; alanine; D-alanine; aspartate; proline; serine; fumarate; DL-glycerate; 3-hydroxybenzoate; L-malate; malonate; mucate; saccharate; succinate; L-tartrate; meso-tartrate; methyl-β-galactoside; putrescine; D-glucuronate; D-galacturonate; D-malate; tricarballylate;
  • ±
  • Strain-dependent substrate utilisation:
  • fucose; glutamate; acetate; DL-lactate; propionate; glutamine; gentisate;
  • Active enzymes:
  • β-galactosidase; ornithine decarboxylase; urease;
    • SPECIAL FEATURES (Friederiksen2005Bergey); (Schauer1995);
    Character Response
  • ✗
  • Metabolites not produced:
  • H₂S; indole;
  • ✓
  • Methyl red test:
  • active
  • ✗
  • VP test:
  • not active
  • ✓
  • ONPG test:
  • active
  • ✗
  • KCN growth:
  • ✓
  • NO3➔NO2:
  • reduced

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Proteobacteria Class:  Gammaproteobacteria Order:  Enterobacterales Family:  Enterobacteriaceae Genus:  Citrobacter Alt. name:  Citrobacter species 9 Gram stain:  neg O2 Relation.:  facultatively anaerobic Spore:  No spore Motility:  Sessile Morphology:  Rod
    Health:  Unknown
    Source:  rodents
    		Aesculin:  + Urea:  + Gelatin:  neg DNA:  neg
    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    L-Arabinose:  + Glucose:  + Mannose:  + Rhamnose:  + Sorbose:  + Xylose:  + Cellubiose:  + Lactose:  + Maltose:  + Melibiose:  neg Sucrose:  neg Trehalose:  + Adonitol:  + D-Arabitol:  neg Dulcitol:  neg Erythritol:  neg Glycerol:  neg Inositol:  + Mannitol:  + Me-α-D-Glc:  neg Salicin:  +
    SUBSTRATE ASSIMILATION & UTILISATION
    Monosaccharide util/assim Oligosaccharide util/assim Other carboh. util/assim Amino acid util/assim Organic acid util/assim
    L-Arabinose:  + Fructose:  + Fucose:  d(neg) Galactose:  + Glucose:  + D-Lyxose:  neg Mannose:  + Rhamnose:  + Ribose:  + Sorbose:  neg Xylose:  + Cellubiose:  + Gentiobiose:  neg Lactose:  + Maltose:  + Maltotriose:  + Melezitose:  neg Melibiose:  neg Raffinose:  neg Sucrose:  neg D-Turanose:  neg Trehalose:  + N_Acetyl_glucosamine:  + Adonitol:  neg D-Arabitol:  neg L-Arabitol:  neg Dulcitol:  neg Erythritol:  neg Aesculin:  neg Ethanolamine:  neg Gluconate:  + Glucosamine:  + Glycerol:  neg Inositol:  neg Mannitol:  + Me-α-D-Glc:  neg Sorbitol:  + Xylitol:  neg Ala:  + D-Ala:  + 4-Aminobutyrate:  neg 5-Aminovalerate:  neg Asp:  + Betaine:  neg Glu:  d Histamine:  neg His:  neg Pro:  + Ser:  + Trigonelline:  neg Tryptamine:  neg Trp:  neg Tyr:  neg Acetate:  d Aconitate:  neg Benzoate:  neg Caprate:  neg Caprylate:  neg Citrate:  neg Fumarate:  + Glutarate:  neg DL-Glycerate:  + 3-Hydroxybutyrate:  neg 3-Hydroxybenzoate:  + 4-Hydroxybenzoate:  neg Itaconate:  neg 2-Ketogluconate:  neg 5-Ketogluconate:  neg DL-Lactate:  d L-Malate:  + Malonate:  + Mucate:  + Phenylacetate:  neg Phenylpropionate:  neg Propionate:  d Quinate:  neg Saccharate:  + Succinate:  + D-Tartrate:  neg L-Tartrate:  +
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Urease:  + β-Galactosidase:  + ArgDH:  neg ArgDC:  neg LysDC:  neg OrnDC:  + Phe deaminase:  neg Lipase:  neg
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		H2S:  neg Indole:  neg

    References

    SPECIFIC REFERENCES FOR CITROBACTER RODENTIUM
  • Friederiksen2005Bergey - Bergey's manual of systematic bacteriology. Vol. 2, The Gammaproteobacteria Part B. Family Enterobacteriaceae, Genus X. Citrobacter
  • Schauer1995 - Genetic and biochemical characterization of Citrobacter rodentium sp. nov.
  • ...............................
    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR CITROBACTER RODENTIUM
  • Byrd2020 - Stability and dynamics of the human gut microbiome and its association with systemic immune traits.
  • Zeller2014 - Potential of fecal microbiota for early-stage detection of colorectal cancer
  • ...............................
    • Added: May 15, 2022