Flavobacterium caeni

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

Overview

  • Flavobacterium caeni is a Gram-negative, non-spore-forming, strictly aerobic, non-motile, rod-shaped bacterium. It has been detected in at least 2 gut microbiome compilation studies or metastudies. The DNA G+C content is 52%. Flavobacterium caeni is unlikely to be a gut coloniser. (Fujii2014; Liu2010a)



  • This organism has been recovered from a waste treatment plant. Pathogenicity status unknown, or very unlikely to be pathogenic. Likely to be transient and not a long-term gut commensal.
    • QUIRKS
  • Strict aerobe and only grows at 30C, so likely to be a non-coloniser of the gut. Significant descrepancy between some data reported by Fujii2014 and that originally reported by Liu2010a.
    • GENERAL CHARACTERISTICS (Fujii2014); (Liu2010a);
    Character Response
  • Substrates hydrolysed or digested:
  • casein; DNA;
  • 🧂
  • Salt tolerance:
  • tolerates 0-2% salt; Grows optimally with 0.5% salt.
  • pH
  • Acidity tolerance:
  • tolerates pH 6.0; tolerates pH 9.0; Grows optimally at pH 6.5-7.5.
  • 🌡
  • Temperature tolerance:
  • grows at 10℃; grows at 30℃; Grows optimally at 20-25℃.
  • H+
  • Acid from carbohydrates usually produced:
  • aesculin;
  • ⥅
  • Substrates assimilated or utilised:
  • dextrin; galactose; glycogen; lactose; D-turanose; proline; threonine; formate; lactate; propionate; α-ketovalerate; methyl succinate; uridine;
  • Active enzymes:
  • alkaline phosphatase; acid phosphatase; catalase; chymotrypsin; esterase C4; esterase lipase C8; α-glucosidase; Leu arylamidase; oxidase; Val arylamidase; naphthol-ASBI-P;
    • SPECIAL FEATURES (Fujii2014);
    Character Response
  • ✗
  • Metabolites not produced:
  • indole;
  • ✗
  • Nitrate:
  • not reduced
  • Pigments:
  • orange
    • RESPONSE TO ANTIBIOTICS (Fujii2014); (Liu2010a);
    Class Active Resistant
  • Penicillins:
  • ampicillin; carbenicillin; penicillin;
  • Macrolides:
  • erythromycin;
  • Tetracyclines:
  • tetracycline;
  • Quinolines:
  • ciprofloxacin; norfloxacin;
  • Aminoglycosides:
  • streptomycin;
  • kanamycin;
  • Polypep/ketides:
  • rifampicin;
  • Heterocycles:
  • chloramphenicol;
  • Vancomycins:
  • vancomycin;
  • Miscellaneous antibiotics:
  • novobiocin;
  • polymyxin B;

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Bacteroidetes Class:  Flavobacteriia Order:  Flavobacteriales Family:  Flavobacteriaceae Genus:  Flavobacterium Gram stain:  neg O2 Relation.:  strictly aerobic Spore:  No spore Motility:  Sessile Morphology:  Rod Pigment:  orange
    Health:  Unknown
    Source:  a waste treatment plant
    DNA G+C(%):  52
    Opt. T:  20-25℃
    Low T(℃):  10(+)
    Lower T(℃):  30(+)
    NaCl 0.5-2%:  0-2(+)
    Opt. pH:  6.5-7.5
    pH 6.0-8.0:  6.0(+)
    pH >8:  9.0(+)
    		Aesculin:  neg Urea:  neg Gelatin:  neg Starch:  neg Casein:  + Agar:  neg DNA:  + Tyrosine:  w Pectin:  neg Tween:  20(+) 40(neg) 60(w) 80(+)
    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    Glucose:  neg Lactose:  w Maltose:  w Aesculin:  + Glycogen:  w Starch:  w
    SUBSTRATE ASSIMILATION & UTILISATION
    Monosaccharide util/assim Oligosaccharide util/assim Other carboh. util/assim Amino acid util/assim Organic acid util/assim
    Arabinose:  neg Galactose:  + Glucose:  neg Mannose:  neg Cellubiose:  neg Gentiobiose:  neg Lactose:  + Maltose:  neg D-Turanose:  + N_Acetyl_glucosamine:  neg Dextrin:  + Gluconate:  neg Glycogen:  + Inositol:  neg Mannitol:  neg Glu:  neg Leu:  neg Pro:  + Thr:  + Acetate:  neg Adipate:  neg Caprate:  neg Caproate:  neg Citrate:  neg Formate:  + Lactate:  + Malate:  neg Phenylacetate:  neg Propionate:  +
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Oxidase:  + Catalase:  + Urease:  neg Ac-β-glcamnd:  neg α-Fucosidase:  neg α-Galactosidase:  neg β-Galactosidase:  neg α-Glucosidase:  + β-Glucosidase:  neg β-Glucuronidase:  neg α-Mannosidase:  neg ArgDH:  neg Chymotrypsin:  + Trypsin:  neg CystineAA:  neg LeuAA:  + ValAA:  + AlkalineP:  + AcidP:  + Esterase(C4):  + EstLip(C8):  + Lipase(C14):  neg
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		Indole:  neg Pigment:  orange
    ANTIBIOTICS ℞
    Penicillins & Penems (μg/mL) Cephalosporins (μg/mL) Aminoglycosides (μg/mL) Macrolides (μg/mL) Quinolones (μg/mL)
    ampicillin:  S(10; disc)
    carbenicil:  S(100; disc)
    penicillin:  S(10U)
    kanamycin:  R(30; disc)
    streptomycin:  S(10; disc)
    erythromycin:  S(15; disc)
    ciprofloxacin:  S(5; disc)
    norfloxacin:  S(10; disc)
    Tetracyclines (μg/mL) Vancomycin Class (μg/mL) Polypep/ketides (μg/mL) Heterocycles (μg/mL) Other (μg/mL)
    tetracycline:  S(30; disc)
    vancomycin:  S(30; disc)
    rifampicin:  S(5; disc)
    chloramphenicol:  R(30; disc)
    novobiocin:  S(30; disc)
    polymyxin_B:  R(300U)

    References

    SPECIFIC REFERENCES FOR FLAVOBACTERIUM CAENI
  • Fujii2014 - Flavobacterium longum sp. nov. and Flavobacterium urocaniciphilum sp. nov., isolated from a wastewater treatment plant, and emended descriptions of Flavobacterium caeni and Flavobacterium terrigena.
  • Liu2010a - Flavobacterium caeni sp. nov., isolated from a sequencing batch reactor for the treatment of malachite green effluents.
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    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR FLAVOBACTERIUM CAENI
  • Byrd2020 - Stability and dynamics of the human gut microbiome and its association with systemic immune traits.
  • De2020 - Metagenomic analysis of gut microbiome and resistome of diarrheal fecal samples from Kolkata, India, reveals the core and variable microbiota including signatures of microbial dark matter.
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    • Added: January 19, 2022