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Related Experiment Videos

Horizontal gene transfer and bacterial diversity.

Chitra Dutta1, Archana Pan

  • 1Human Genetics and Genomics Group, Indian Institute of Chemical Biology, 4, Raja SC Mullick Road, Kolkata 700 032, India. cdutta@iicb.res.in

Journal of Biosciences
|April 3, 2002
PubMed
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Horizontal gene transfer dramatically reshapes bacterial genomes, introducing new traits and driving microbial evolution. Analyzing complete genome sequences quantifies this impact on bacterial diversification and speciation.

Area of Science:

  • Microbiology
  • Genomics
  • Evolutionary Biology

Background:

  • Bacterial genomes exhibit dynamic and mosaic structures.
  • Horizontal transfer significantly alters bacterial genetic information.
  • This process introduces novel traits, impacting ecological and pathogenic characteristics.

Purpose of the Study:

  • To review the quantitative assessment of horizontally transferred genetic information.
  • To understand the scope, rate, and impact of horizontal gene transfer on microbial evolution.
  • To highlight the role of complete chromosomal sequences in this assessment.

Main Methods:

  • Review of recent complete chromosomal sequences of various microorganisms.
  • Quantitative assessment of horizontally transmitted genetic information.

Related Experiment Videos

  • Analysis of the impact on microbial diversification and speciation.

    • Main Results:

    • Horizontal gene transfer is a major driver of bacterial genome evolution.
    • It leads to significant changes in bacterial physiology, ecology, and pathogenicity.
    • Complete genome sequencing enables quantitative evaluation of horizontal transfer's role.

    Conclusions:

    • Horizontal gene transfer is crucial for microbial diversification and speciation.
    • Quantitative analysis of genomic data reveals the profound impact of this process.
    • Understanding horizontal transfer is key to comprehending bacterial evolution.