Prevotella oryzae

(aka Xylanibacter oryzae)

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

Overview

  • Prevotella oryzae, (aka Xylanibacter oryzae), is a Gram-negative, non-spore-forming, strictly anaerobic, non-motile, filamentous bacterium. It has been detected in at least 1 gut microbiome compilation study or metastudy. The DNA G+C content is 43.6%. Prevotella oryzae is likely to be transient and not a long-term gut coloniser. (Sakamoto2012a; Ueki2006a)



  • This organism has been recovered from rice-plant residue in flooded rice-field soil in Japan. 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
  • Growth at 37C is significantly delayed. This is an unlikely gut coloniser
    • GENERAL CHARACTERISTICS (Sakamoto2012a); (Ueki2006a);
    Character Response
  • Substrates hydrolysed or digested:
  • aesculin;
  • 🧂
  • Salt tolerance:
  • tolerates 0-0.5% salt;
  • 💧
  • Bile tolerance:
  • Sensitive
  • pH
  • Acidity tolerance:
  • tolerates pH 4.7; tolerates pH 7.3; Grows optimally at pH 5.7-6.2.
  • 🌡
  • Temperature tolerance:
  • grows at 15℃; grows at 35℃; Grows optimally at 30℃.
  • ⥅
  • Substrates assimilated or utilised:
  • arabinose; cellubiose; fructose; galactose; glucose; lactose; maltose; mannose; pectin; rhamnose; ribose; raffinose; salicin; starch; trehalose; xylan; xylose; pyruvate;
  • Active enzymes:
  • Ala arylamidase; arabinosidase; β-galactosidase; α-glucosidase; β-glucosidase; Leu-Gly arylamidase;
    • SPECIAL FEATURES (Sakamoto2012a); (Ueki2006a);
    Character Response
  • ✓
  • Metabolites produced:
  • acetate; propionate; succinate; malate (minor);
  • ✗
  • Metabolites not produced:
  • H₂S; indole;
  • ✗
  • Nitrate:
  • not reduced

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Bacteroidetes Class:  Bacteroidia Order:  Bacteroidales Family:  Prevotellaceae Genus:  Prevotella Alt. name:  Xylanibacter oryzae Gram stain:  neg O2 Relation.:  strictly anaerobic Spore:  No spore Motility:  Sessile Morphology:  Filamentous
    Health:  Unknown
    Source:  rice-plant residue in flooded rice-field soil in Japan
    DNA G+C(%):  43.6
    Opt. T:  30℃
    Low T(℃):  15(+)
    Mid T(℃):  35(+)
    NaCl 0.5-2%:  0-0.5(+)
    Opt. pH:  5.7-6.2
    pH 4.2-5.9:  4.7(+)
    pH 6.0-8.0:  7.3(+)
    Bile reaction(%):  S
    		Aesculin:  + Urea:  neg Gelatin:  neg
    SUBSTRATE ASSIMILATION & UTILISATION
    Monosaccharide util/assim Oligosaccharide util/assim Other carboh. util/assim Amino acid util/assim Organic acid util/assim
    Arabinose:  + Fructose:  + Galactose:  + Glucose:  + Mannose:  + Rhamnose:  + Ribose:  + Sorbose:  neg Xylose:  + Cellubiose:  + Lactose:  + Maltose:  + Melezitose:  neg Raffinose:  + Sucrose:  neg Trehalose:  + Cellulose:  neg Glycerol:  neg Inositol:  neg Inulin:  neg Mannitol:  neg Pectin:  + Salicin:  + Starch:  + Xylan:  + Fumarate:  neg Lactate:  neg Malate:  neg Pyruvate:  + Succinate:  neg
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Oxidase:  neg Catalase:  neg Urease:  neg G6PDH6PGDH:  neg α-Arab:  + Ac-β-glcamnd:  neg α-Fucosidase:  neg β-Galactosidase:  + α-Glucosidase:  + β-Glucosidase:  + β-Glucuronidase:  neg ArgDH:  neg GluDC:  neg Phe deaminase:  neg AlanineAA:  + ArgAA:  neg GluGluAA:  neg GlyAA:  neg HisAA:  neg LeuAA:  neg LeuGlyAA:  + ProAA:  neg PyrogluAA:  neg SerAA:  neg TyrAA:  neg AlkalineP:  neg
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		Acetate:  + Propionate:  + Succinate:  + H2S:  neg Malate:  minor(+) Indole:  neg

    References

    SPECIFIC REFERENCES FOR PREVOTELLA ORYZAE
  • Sakamoto2012a - Reclassification of Xylanibacter oryzae Ueki et al. 2006 as Prevotella oryzae comb. nov., with an emended description of the genus Prevotella.
  • Ueki2006a - Xylanibacter oryzae gen. nov., sp. nov., a novel strictly anaerobic, Gram-negative, xylanolytic bacterium isolated from rice-plant residue in flooded rice-field soil in Japan.
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    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR PREVOTELLA ORYZAE
  • Byrd2020 - Stability and dynamics of the human gut microbiome and its association with systemic immune traits.
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    • Added: May 15, 2022