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Bacillus licheniformis

  • General information

    • the following information is not yet verified
      B.licheniformis, B.subtilis and B.pumilus comprise the subtilis group, which has been associated with food borne gastro-enteritis

      Taxonomy
      Family: Bacillaceae

      Natural habitats
      Spores occur in soil, dust, water, may survive severe heat treatment

      Clinical significance
      Considered non pathogenic, but may occasionally be an opportunistic pathogen.

  • Gram stain

    • the following information is not yet verified
      Gram positive (variable) rods,

      0.6-0.8 x 1.5-3.0 µm

      Spore shape: ellipsoidal / cylindrical
      Spore position: central, paracentral or subterminal
      Sporangia swelling: negative

  • Culture characteristics

    • the following information is not yet verified

      Facultative anaerobic

      Large blister shaped colonies, folds after drying, is opaque with age with a dull to rough surface, hair-like outgrowths (“licheniform”), attached strongly to the agar, with margins varying from undulate to fimbriate.

      Color is whitish and may become brown, nonhemolytic
      Strains isolated from human faeces are hemolytic

      McConkey growth

      BBAØ growth

  • Characteristics

  • References

    • James Versalovic et al.(2011) Manual of Clinical Microbiology 10th Edition


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