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Related Experiment Videos

Bacterial flagellation and cell division

S I Aizawa1, T Kubori

  • 1Department of Biosciences, Teikyo University, 1-1 Toyosatodai, Utsunomiya 320-8551, Japan. aizawa@nasu.bio.teikyo-u.ac.jp

Genes to Cells : Devoted to Molecular & Cellular Mechanisms
|January 20, 1999
PubMed
Summary
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Salmonella flagellar filament growth is cell cycle-independent, but the number of flagella depends on cell division. A new model explains how flagellar number is maintained across generations.

Area of Science:

  • Microbiology
  • Cell Biology
  • Bacterial Physiology

Background:

  • Peritrichous flagella in Salmonella are crucial for motility.
  • Flagellar synthesis and function persist across multiple cell generations.
  • The relationship between flagellar biogenesis and cell division is complex.

Purpose of the Study:

  • To elucidate the mechanisms maintaining flagellar number through cell generations.
  • To investigate the cell cycle dependence of flagellar biogenesis in Salmonella.
  • To propose a model for flagellar number regulation and suggest future research directions.

Main Methods:

  • The study presents a theoretical model for flagellar number maintenance.
  • It analyzes the distinct regulation of flagellar filament growth versus basal body number.

Related Experiment Videos

  • Future research directions are proposed, focusing on regulatory networks.

    • Main Results:

    • Flagellar filament elongation is independent of the cell cycle.
    • Filament length appears to be regulated locally at the flagellar base.
    • The number of flagella (basal bodies) is dependent on the cell cycle.

    Conclusions:

    • A model is proposed to explain the maintenance of flagellar number across cell generations.
    • Flagellar biogenesis involves distinct cell cycle-dependent and independent processes.
    • Further research should explore global communication between flagellar genes and cellular regulatory networks.