Microbacterium testaceum

(aka Brevibacterium testaceum)

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

Overview

  • Microbacterium testaceum, (aka Brevibacterium testaceum), is a Gram-positive, non-spore-forming, strictly aerobic, motile, rod-shaped bacterium. It has been detected in at least 2 gut microbiome compilation studies or metastudies. The DNA G+C content is 65.4-72.7%. Microbacterium testaceum is unlikely to be a gut coloniser. (Takeuchi1998; Collins1983d; Suzuki2012Bergey)



  • This organism has been recovered from human faeces and Chinese paddies. 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
  • Obligate aerobe, no spore formation and doesn't grow at 37C, so probably a gut non-coloniser.
    • GENERAL CHARACTERISTICS (Takeuchi1998); (Collins1983d); (Suzuki2012Bergey);
    Character Response
  • Substrates hydrolysed or digested:
  • arginine; casein; gelatin; starch;
  • pH
  • Acidity tolerance:
  • tolerates pH 6.2; tolerates pH 9.1; Grows optimally at pH 7.0-8.0.
  • 🌡
  • Temperature tolerance:
  • doesn't grow at 37℃; Grows optimally at 20-30℃.
  • H+
  • Acid from carbohydrates usually produced:
  • glucose;
  • Active enzymes:
  • catalase;
    • SPECIAL FEATURES (Takeuchi1998); (Suzuki2012Bergey);
    Character Response
  • ✓
  • Metabolites produced:
  • H₂S;
  • ✗
  • Metabolites not produced:
  • indole;
  • ✗
  • VP test:
  • not active
  • ✗
  • NO3➔NO2:
  • not reduced
  • ±
  • Pigments:
  • reddish-yellow

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Actinobacteria Class:  Actinomycetia Order:  Micrococcales Family:  Microbacteriaceae Genus:  Microbacterium Alt. name:  Brevibacterium testaceum Gram stain:  + O2 Relation.:  strictly aerobic Spore:  No spore Motility:  Swimming Morphology:  Rod Pigment:  reddish-yellow
    Health:  Unknown
    Source:  human faeces and Chinese paddies
    DNA G+C(%):  65.4-72.7
    Opt. T:  20-30℃
    Mid T(℃):  37(neg)
    Opt. pH:  7.0-8.0
    pH 6.0-8.0:  6.2(+)
    pH >8:  9.1(+)
    		Gelatin:  + Starch:  + Casein:  + Arginine:  + Tween:  20(+) 40(+) 60(+) 80(+)
    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    Glucose:  + Xylose:  neg Lactose:  neg Sucrose:  neg Starch:  neg Glycerol:  neg
    SUBSTRATE ASSIMILATION & UTILISATION
    Monosaccharide util/assim Oligosaccharide util/assim Other carboh. util/assim Amino acid util/assim Organic acid util/assim
    Glucose:  neg Gluconate:  neg Glu:  neg Benzoate:  neg Citrate:  neg 3-Hydroxybenzoate:  neg 4-Hydroxybenzoate:  neg 2-Ketogluconate:  neg Succinate:  neg
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Catalase:  +
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		H2S:  + Indole:  neg Pigment:  reddish-yellow

    References

    SPECIFIC REFERENCES FOR MICROBACTERIUM TESTACEUM
  • Takeuchi1998 - Union of the genera Microbacterium Orla-Jensen and Aureobacterium Collins et al. in a redefined genus Microbacterium.
  • Collins1983d - Classification of some coryneform bacteria in a new genus Aureobacterium.
  • Collins1980a - Fatty acid, isoprenoid quinone and polar lipid composition in the classification of Curtobacterium and related taxa.
  • Suzuki2012Bergey - Bergey's manual of systematic bacteriology. Vol. 5, The Actinobacteria. Part A & B. Microbacteriaceae, Genus I. Microbacteria
  • Komagata1964 - New species of Brevibacterium isolated from rice.
  • ...............................
    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR MICROBACTERIUM TESTACEUM
  • Yang2020 - Species-Level Analysis of Human Gut Microbiota With Metataxonomics.
  • Yang2020a - Establishing high-accuracy biomarkers for colorectal cancer by comparing fecal microbiomes in patients with healthy families
  • Zeller2014 - Potential of fecal microbiota for early-stage detection of colorectal cancer
  • ...............................
    • Added: December 15, 2021