Nocardia spp.

  • Douglas I. Johnson


  • Genomics:
    • Nocardia asteroides: chromosome: 6,954,780 bp; 6106 predicted ORFs (Komaki et al. 2014)

    • Nocardia cyriacigeorgica GUH-2: chromosome 6,194,650 bp; 5405 predicted ORFs (Komaki et al. 2014)

    • Nocardia brasiliensis: chromosome: 9,436,348 bp; 8414 predicted ORFs (Vera-Cabrera et al. 2013)

  • Cell morphology:
    • Filamentous hypha-like cells (Fig. 23.1)

  • Gram stain:
    • Gram positive

    • “Beaded,” partially acid-fast appearance; depends on the quantity of mycolic acid in the cell wall

  • Growth:
    • Aerobes; catalase positive.

    • Found primarily in soil and water.

    • >80 species; most are rarely associated with human disease:
      • Antibiotic susceptibilities and molecular characteristics have allowed taxonomic differentiation of previous species into new complexes and clades (Brown-Elliott et al. 2006).


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Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  • Douglas I. Johnson
    • 1
  1. 1.Department of Microbiology & Molecular GeneticsUniversity of VermontBurlingtonUSA

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