Rhodothermus marinus

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

Overview

  • Rhodothermus marinus 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 64%. Rhodothermus marinus is unlikely to be a gut coloniser. (Park2019a; Sako1996; Alfredsson1988)



  • This organism has been recovered from submarine hot springs, Iceland. 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
  • High minimum growth temperature (55C) and strict aerobic nature suggests this organism is likely a gut non-coloniser.
    • GENERAL CHARACTERISTICS (Park2019a); (Sako1996); (Alfredsson1988);
    Character Response
  • 🧂
  • Salt tolerance:
  • doesn't tolerate 0% salt; tolerates 6% salt; Grows optimally with 2% salt.
  • pH
  • Acidity tolerance:
  • Grows optimally at pH 7.
  • 🌡
  • Temperature tolerance:
  • grows at 54-77℃; Grows optimally at 65℃.
  • ⥅
  • Substrates assimilated or utilised:
  • galactose; lactose; maltose; raffinose; starch; sucrose; aspartate; glutamate; pyruvate; glutamine;
  • ±
  • Strain-dependent substrate utilisation:
  • glucose; alanine; D-alanine; ornithine; acetate;
  • Active enzymes:
  • catalase;
    • SPECIAL FEATURES (Sako1996); (Alfredsson1988);
    Character Response
  • ✗
  • Nitrate:
  • not reduced
  • ±
  • Pigments:
  • red
    • RESPONSE TO ANTIBIOTICS (Alfredsson1988);
    Class Active Resistant
  • Penicillins:
  • ampicillin; penicillin G;
  • Macrolides:
  • erythromycin;
  • Tetracyclines:
  • tetracycline;
  • Quinolines:
  • nalidixic-acid;
  • Aminoglycosides:
  • gentamicin; kanamycin; streptomycin;
  • Polypep/ketides:
  • rifampicin;
  • bacitracin;
  • Heterocycles:
  • chloramphenicol;
  • Vancomycins:
  • vancomycin;
  • Miscellaneous antibiotics:
  • lincomycin;
  • polymyxin B;

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Bacteroidetes Order:  Bacteroidetes Order II. Incertae sedis Family:  Rhodothermaceae Genus:  Rhodothermus Gram stain:  neg O2 Relation.:  strictly aerobic Spore:  No spore Motility:  Sessile Morphology:  Rod Pigment:  red
    Health:  Unknown
    Source:  submarine hot springs, Iceland
    DNA G+C(%):  64
    Opt. T:  65℃
    High T(℃):  54-77(+)
    NaCl 0.5-2%:  0(neg)
    NaCl >6%:  6(+)
    Opt. pH:  7
    		Casein:  neg
    SUBSTRATE ASSIMILATION & UTILISATION
    Monosaccharide util/assim Oligosaccharide util/assim Other carboh. util/assim Amino acid util/assim Organic acid util/assim
    Galactose:  d(+) Glucose:  d Lactose:  + Maltose:  d(+) Raffinose:  + Sucrose:  + Gluconate:  neg Starch:  + Ala:  d D-Ala:  d Arg:  neg Asp:  + Glu:  + Leu:  neg Orn:  d Phe:  neg Pro:  neg Ser:  neg Thr:  neg Val:  neg Acetate:  d Butyrate:  neg Citrate:  neg Fumarate:  neg Malate:  neg Pyruvate:  + Succinate:  neg
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Oxidase:  neg Catalase:  +
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		Pigment:  red
    ANTIBIOTICS ℞
    Penicillins & Penems (μg/mL) Cephalosporins (μg/mL) Aminoglycosides (μg/mL) Macrolides (μg/mL) Quinolones (μg/mL)
    ampicillin:  Sens
    penicillin_G:  Sens
    gentamicin:  Res
    kanamycin:  Res
    streptomycin:  Res
    erythromycin:  Sens
    nalidixic-acid:  Res
    Tetracyclines (μg/mL) Vancomycin Class (μg/mL) Polypep/ketides (μg/mL) Heterocycles (μg/mL) Other (μg/mL)
    tetracycline:  Sens
    vancomycin:  Sens
    bacitracin:  Res
    rifampicin:  Sens
    chloramphenicol:  Sens
    lincomycin:  Sens
    polymyxin_B:  Res

    References

    SPECIFIC REFERENCES FOR RHODOTHERMUS MARINUS
  • Park2019a - Roseithermus sacchariphilus gen. nov., sp. nov. and proposal of Salisaetaceae fam. nov., representing new family in the order Rhodothermales.
  • Sako1996 - Rhodothermus obamensis sp. nov., a modern lineage of extremely thermophilic marine bacteria.
  • Silva2000 - Polyphasic evidence for the reclassification of Rhodothermus obamensis Sako et al. 1996 as a member of the species Rhodothermus marinus Alfredsson et al. 1988.
  • Alfredsson1988 - Rhodothermus marinus gen. nov., sp. nov., a Thermophibic, Halophilic Bacterium from Submarine Hot Springs in Iceland.
  • ...............................
    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR RHODOTHERMUS MARINUS
  • New2022 - Collective effects of human genomic variation on microbiome function.
  • Zeller2014 - Potential of fecal microbiota for early-stage detection of colorectal cancer
  • ...............................
    • Added: March 18, 2022