Microbacterium luteolum

(aka Aureobacterium luteolum)

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

Overview

  • Microbacterium luteolum, (aka Aureobacterium luteolum), is a Gram-positive, non-spore-forming, strictly aerobic, non-motile, rod-shaped bacterium. It has been detected in at least 1 gut microbiome compilation study or metastudy. The DNA G+C content is 66-72%. Microbacterium luteolum is unlikely to be a gut coloniser. (Takeuchi1998; Suzuki2012Bergey; Yokota1993a)



  • This organism has been recovered from human faeces, and soil, and clinical sources. The risk classification (www.baua.de) for this organism is 1, i.e., low risk of infection and spread. Could be a possible pathogen in humans, but unknown at this stage. Likely to be transient and not a long-term gut commensal.
    • QUIRKS
  • Obligate aerobe, no spore formation and doesn't grow at 37C, so probably a gut non-coloniser.
    • GENERAL CHARACTERISTICS (Takeuchi1998); (Suzuki2012Bergey); (Yokota1993a);
    Character Response
  • Substrates hydrolysed or digested:
  • aesculin; urea;
  • 🧂
  • Salt tolerance:
  • doesn't tolerate 2% salt;
  • 🌡
  • Temperature tolerance:
  • doesn't grow at 37℃; Grows optimally at 28℃.
  • ⥅
  • Substrates assimilated or utilised:
  • hippurate; acetate; fumarate; lactate; malate; propionate; succinate;
  • Active enzymes:
  • catalase; esterase C4; esterase lipase C8; β-galactosidase; α-glucosidase; β-glucosidase; Leu arylamidase; α-mannosidase;
    • SPECIAL FEATURES (Takeuchi1998); (Suzuki2012Bergey); (Yokota1993a);
    Character Response
  • ✗
  • Metabolites not produced:
  • H₂S; indole;
  • ✓
  • Methyl red test:
  • active
  • ✗
  • VP test:
  • not active
  • ✓
  • Nitrate:
  • reduced
  • Pigments:
  • yellow

  • Hoyles, L., Clear, J. A., & McCartney, A. L. (2013). Use of denaturing gradient gel electrophoresis to detect Actinobacteria associated with the human faecal microbiota. Anaerobe, 22, 90–96.

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Actinobacteria Class:  Actinomycetia Order:  Micrococcales Family:  Microbacteriaceae Genus:  Microbacterium Alt. name:  Aureobacterium luteolum Gram stain:  + O2 Relation.:  strictly aerobic Spore:  No spore Motility:  Sessile Morphology:  Rod Pigment:  yellow
    Health:  Unknown
    Source:  human faeces, and soil, and clinical sources
    DNA G+C(%):  66-72
    Opt. T:  28℃
    Mid T(℃):  37(neg)
    NaCl 0.5-2%:  2(neg)
    		Aesculin:  + Urea:  + Gelatin:  neg Starch:  neg Tween:  neg
    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    Glucose:  neg Ribose:  neg Xylose:  neg Lactose:  neg Maltose:  neg Glycogen:  neg Mannitol:  neg
    SUBSTRATE ASSIMILATION & UTILISATION
    Monosaccharide util/assim Oligosaccharide util/assim Other carboh. util/assim Amino acid util/assim Organic acid util/assim
    Arabinose:  neg Fructose:  neg Glucose:  neg Mannose:  neg Rhamnose:  neg Sorbose:  neg Lactose:  neg Sucrose:  neg Adonitol:  neg Dulcitol:  neg Erythritol:  neg Ethanol:  neg Inositol:  neg Inulin:  neg Methanol:  neg Salicin:  neg Sorbitol:  neg Hippurate:  + Acetate:  + Citrate:  neg Formate:  neg Fumarate:  + Lactate:  + Malate:  + Propionate:  + Succinate:  +
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Oxidase:  neg Catalase:  + Ac-β-glcamnd:  neg α-Fucosidase:  neg α-Galactosidase:  neg β-Galactosidase:  + α-Glucosidase:  + β-Glucosidase:  + β-Glucuronidase:  neg α-Mannosidase:  + ArgDH:  neg LeuAA:  + PyrrolidAA:  neg AlkalineP:  neg AcidP:  neg Esterase(C4):  + EstLip(C8):  + Lipase(C14):  neg
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		H2S:  neg Indole:  neg Pigment:  yellow

    References

    SPECIFIC REFERENCES FOR MICROBACTERIUM LUTEOLUM
  • Takeuchi1998 - Union of the genera Microbacterium Orla-Jensen and Aureobacterium Collins et al. in a redefined genus Microbacterium.
  • Suzuki2012Bergey - Bergey's manual of systematic bacteriology. Vol. 5, The Actinobacteria. Part A & B. Microbacteriaceae, Genus I. Microbacteria
  • Yokota1993a - Proposal of six new species in the genus Aureobacterium and transfer of Flavobacterium esteraromaticum Omelianski to the genus Aureobacterium as Aureobacterium esteraromaticum comb. nov.
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    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR MICROBACTERIUM LUTEOLUM
  • RajilicStojanovic2014 - The first 1000 cultured species of the human gastrointestinal microbiota.
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    • Added: April 08, 2021