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Related Experiment Videos

Three-dimensional scroll waves organize Dictyostelium slugs.

F Siegert1, C J Weijer

  • 1Zoologisches Institut, Universität München, Federal Republic of Germany.

Proceedings of the National Academy of Sciences of the United States of America
|July 15, 1992
PubMed
Summary

Periodic signals and chemotaxis guide Dictyostelium discoideum slug development. Cell movement patterns reveal a scroll wave organizing cell rotation and migration, crucial for morphogenesis.

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Area of Science:

  • Cell Biology
  • Developmental Biology
  • Biophysics

Background:

  • Dictyostelium discoideum slugs exhibit complex morphogenesis.
  • Chemotaxis and periodic signals are hypothesized to direct cell movement and development.

Purpose of the Study:

  • To investigate the role of periodic signals and chemotaxis in Dictyostelium discoideum slug morphogenesis.
  • To analyze cell behavior and movement patterns within Dictyostelium discoideum slugs.

Main Methods:

  • High-resolution digital image processing to record cell trails.
  • Tracking of neutral red-stained prestalk and anterior-like cells within slugs.

Main Results:

  • Anterior-like cells in the prespore zone move forward coherently and periodically.

Related Experiment Videos

  • Prestalk cells exhibit rotational movement perpendicular to slug migration.
  • Chemotactic signals propagate as 3D scroll waves (prestalk) and planar waves (prespore).

    • Conclusions:

    • Differential oscillatory properties of prestalk and prespore cells explain distinct movement behaviors.
    • Dictyostelium discoideum slugs function as excitable systems.
    • A twisted scroll wave organizes slug formation and migration.