Absiella tortuosum

(aka Eubacterium tortuosum)

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

Overview

  • Absiella tortuosum, (aka Eubacterium tortuosum), is a Gram-positive, non-spore-forming, strictly anaerobic, non-motile, rod-shaped bacterium. It has been detected in at least 4 gut microbiome compilation studies or metastudies. The DNA G+C content is 37.9%. Absiella tortuosum is probably a rare gut coloniser. (Paek2017; Eggerth1935; Wade2011Bergeys)



  • This organism has been recovered from human faeces, turkey diseases and freshwater. The risk classification (www.baua.de) for this organism is 2, i.e., risk of individual infection, but low risk of spread (notes: human and animal pathogen). Is a known human pathogen. Is a known gut commensal.
    • GENERAL CHARACTERISTICS (Paek2017); (Eggerth1935); (Wade2011Bergeys);
    Character Response
  • Substrates hydrolysed or digested:
  • aesculin;
  • ±
  • Strain-dependent hydrolysis or digestion:
  • milk;
  • 🧂
  • Salt tolerance:
  • tolerates 0% salt; tolerates 3% salt; Grows optimally with 1.0% salt.
  • 💧
  • Bile tolerance:
  • Doesn't tolerate 20% bile
  • pH
  • Acidity tolerance:
  • Grows optimally at pH 7.
  • 🌡
  • Temperature tolerance:
  • grows at 30℃; grows at 45℃; Grows optimally at 37-41℃.
  • H+
  • Acid from carbohydrates usually produced:
  • glucose; mannose; sucrose; trehalose;
  • ±
  • Strain-dependent acid from carbs:
  • fructose;
  • ⥅
  • Substrates assimilated or utilised:
  • melibiose; pyruvate;
    • SPECIAL FEATURES (Paek2017); (Eggerth1935); (Wade2011Bergeys);
    Character Response
  • ✓
  • Metabolites produced:
  • formate (trace); acetate; butyrate; lactate; succinate; Hâ‚‚S (variable); Hâ‚‚;
  • ✗
  • Metabolites not produced:
  • propionate; indole;
  • ✗
  • VP test:
  • not active
  • ±
  • Nitrate:
  • strain dependent

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Firmicutes Class:  Erysipelotrichia Order:  Erysipelotrichales Family:  Erysipelotrichaceae Genus:  Absiella Alt. name:  Eubacterium tortuosum Gram stain:  + O2 Relation.:  strictly anaerobic Spore:  No spore Motility:  Sessile Morphology:  Rod
    Health:  Unknown
    Source:  human faeces, turkey diseases and freshwater
    DNA G+C(%):  37.9
    Opt. T:  37-41℃
    Lower T(℃):  30(+)
    High T(℃):  45(+)
    NaCl 0.5-2%:  0(+)
    NaCl 3-5%:  3(+)
    Opt. pH:  7
    Bile reaction(%):  20(neg)
    		Aesculin:  + Gelatin:  neg Starch:  neg Hippurate:  neg Milk:  curdle Meat:  neg
    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    Arabinose:  neg Fructose:  d(neg) Galactose:  neg Glucose:  + Mannose:  + Rhamnose:  neg Ribose:  neg Sorbose:  neg Xylose:  neg Cellubiose:  neg Lactose:  neg Maltose:  neg Melezitose:  neg Melibiose:  w Sucrose:  + Trehalose:  + Amygdalin:  neg Aesculin:  neg Glycogen:  neg Inulin:  neg Starch:  neg Adonitol:  neg Dulcitol:  neg Glycerol:  neg Mannitol:  neg Sorbitol:  neg Salicin:  w
    SUBSTRATE ASSIMILATION & UTILISATION
    Monosaccharide util/assim Oligosaccharide util/assim Other carboh. util/assim Amino acid util/assim Organic acid util/assim
    Melibiose:  w(+) Lactate:  neg Pyruvate:  +
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Catalase:  neg
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		Formate:  trace(+) Acetate:  + Propionate:  neg Butyrate:  + Lactate:  + Succinate:  + H2S:  vr H2:  + Indole:  neg

    References

    SPECIFIC REFERENCES FOR ABSIELLA TORTUOSUM
  • Paek2017 - Description of Absiella argi gen. nov., sp. nov., and transfer of Eubacterium dolichum and Eubacterium tortuosum to the genus Absiella as Absiella dolichum comb. nov. and Absiella tortuosum comb. nov.
  • Eggerth1935 - The Gram-positive Non-spore-bearing Anaerobic Bacilli of Human Feces.
  • Wade2011Bergeys - Bergey's manual of systematic bacteriology. Vol. 3, The Firmicutes. Family Eubacteriaceae, Genus I. Eubacterium
  • ...............................
    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR ABSIELLA TORTUOSUM
  • Benno1989 - Comparison of fecal microflora of elderly persons in rural and urban areas of Japan.
  • Finegold1977 - Fecal microbial flora in Seventh Day Adventist populations and control subjects.
  • Lagier2016 - Culture of previously uncultured members of the human gut microbiota by culturomics.
  • RajilicStojanovic2014 - The first 1000 cultured species of the human gastrointestinal microbiota.
  • ...............................
    • GENERAL REFERENCES FOR ABSIELLA TORTUOSUM
  • Ludwig2009 - Revised road map to the phylum Firmicutes.
    • Added: July 14, 2021