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Related Experiment Videos

Aggregation in Polysphondylium

M E Jones

    Journal of Cell Science
    |October 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

    Propagated waves in Polysphondylium species are similar to Dictyostelium discoideum, suggesting a shared aggregation mechanism. Wave speed depends on intracellular delays, not acrasin diffusion, despite different chemical signals.

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    Area of Science:

    • Cellular slime mold biology
    • Developmental biology

    Background:

    • Cellular slime molds like Dictyostelium discoideum aggregate via chemotaxis.
    • Polysphondylium species also exhibit aggregation behaviors.

    Purpose of the Study:

    • To investigate the nature of propagated waves during aggregation in Polysphondylium.
    • To compare aggregation mechanisms between Polysphondylium and Dictyostelium.

    Main Methods:

    • Observation of dense aggregating fields of P. violaceum and P. pallidum.
    • Analysis of wave velocity and frequency during aggregation.

    Main Results:

    • Polysphondylium species exhibit propagated waves analogous to Dictyostelium discoideum.
    • Wave velocity is determined by intracellular delay, not acrasin diffusion.

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  • Propagated wave frequencies in Polysphondylium overlap with those in Dictyostelium.

    • Conclusions:

    • The fundamental mechanism of aggregation is conserved between Polysphondylium and Dictyostelium.
    • Differences in coaggregation are likely due to distinct acrasin chemicals, not wave propagation parameters.