Habitat and Morphology of Gardnerella vaginalis

Habitat of Gardnerella vaginalis

  • Normal flora in 40% female (small amount)
  • Found in urine
  • Rarely in blood and wound
  • Found in the anorectal flora of healthy adults of both sexes and as well as children.
  • Isolated from normal vagina of reproductive age female & male urethra (partners of women with bacterial vaginosis).
  • Optimum pH for growth in between 6 and 7.
  • Implicated in case of cervical cancer and infection in urinary tract
  • Frequently present in vagina of asymptomatic patients.

Habitat and Morphology of Gardnerella vaginalis

Morphology of Gardnerella vaginalis

  • Small
  • SIze: 1.28 x 0.3-0.6µm
  • Non-sporulation
  • Non-motile
  • Non capsulated or endospore formed
  • Non filamentous
  • Gram negative ,sometimes gram variable rods or coccobacilli
  • Pleomorphic with presence of metachromatic granules.
  • Presence of clue cells
  • Non- acid fast
  • Facultative anaerobic
  • Cell wall laminated

Genome of Gardnerella vaginalis

  • Circular DNA
  • Size: 1.67 Mb to 1.72 Mb
  • G + C content = 42 to 44%
  • No plasmids have been discovered yet

About Author

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Sagar Aryal

Sagar Aryal is a microbiologist and a scientific blogger. He is currently doing his Ph.D. from the Central Department of Microbiology, Tribhuvan University in collaboration with Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Saarbrucken, Germany. He did his M.Sc. in Microbiology and B.Sc. in Microbiology from St. Xavier’s College, Kathmandu, Nepal. He worked as a Lecturer at St. Xavier’s College, Maitighar, Kathmandu, Nepal, from March 2017 to June 2019. He is interested in research on actinobacteria, myxobacteria, and natural products. He has published more than 15 research articles and book chapters in international journals and well-renowned publishers.

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