Habitat and Morphology of Gardnerella vaginalis

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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 doing his Ph.D. at the Central Department of Microbiology, Tribhuvan University, Kathmandu, Nepal. He was awarded the DAAD Research Grant to conduct part of his Ph.D. research work for two years (2019-2021) at Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Saarbrucken, Germany. Sagar is interested in research on actinobacteria, myxobacteria, and natural products. He is the Research Head of the Department of Natural Products, Kathmandu Research Institute for Biological Sciences (KRIBS), Lalitpur, Nepal. Sagar has more than ten years of experience in blogging, content writing, and SEO. Sagar was awarded the SfAM Communications Award 2015: Professional Communicator Category from the Society for Applied Microbiology (Now: Applied Microbiology International), Cambridge, United Kingdom (UK). Sagar is also the ASM Young Ambassador to Nepal for the American Society for Microbiology since 2023 onwards.

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