Bacteroides spp.

  • Douglas I. Johnson


  • Genomics:
    • Bacteroides fragilis chromosome: 5,277,274 bp; 4578 predicted ORFs (Kuwahara et al. 2004)

  • Cell morphology:
    • Rod shaped (Fig. 11.1)

  • Gram stain:
    • Gram negative

  • Growth:
    • Anaerobes; catalase positive; relatively aerotolerant at nanomolar O2 concentrations

    • Predominant mutualistic microbiota of human GI tract; helps break down food; produces nutrients and energy

    • >90 species: Bacteroides fragilis only significant human pathogenic species


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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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