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A model for hyphal growth and branching.

J I Prosser, A P Trinci

    Journal of General Microbiology
    |March 1, 1979
    PubMed
    Summary

    This study presents a mathematical model for fungal hyphal growth, linking cell processes to overall growth. The model accurately predicts hyphal branching and elongation based on vesicle and nuclear concentrations.

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    Area of Science:

    • Mycology
    • Mathematical Biology
    • Cell Biology

    Background:

    • Fungal hyphae exhibit complex growth and branching patterns.
    • Existing theories propose vesicle transport to hyphal tips drives elongation.
    • The role of nuclear division cycles in hyphal development is under investigation.

    Purpose of the Study:

    • To develop a quantitative mathematical model for hyphal growth and branching.
    • To integrate cytological events with mycelial growth kinetics.
    • To test the hypothesis of a hyphal duplication cycle analogous to the cell cycle.

    Main Methods:

    • Construction of a finite difference mathematical model.
    • Quantification of vesicle and nuclear concentrations.
    • Comparison of model predictions with experimental data for Geotrichum candidum and Aspergillus nidulans.

    Main Results:

    • The model successfully relates internal cytological events to macroscopic hyphal growth.
    • Predictions of hyphal length, branching, and septation matched experimental observations.
    • The model supports the concept of a duplication cycle in hyphae.

    Conclusions:

    • The developed mathematical model provides a robust framework for understanding hyphal morphogenesis.
    • Vesicle dynamics and nuclear cycles are key determinants of fungal growth patterns.
    • The model accurately predicts experimental growth kinetics, validating its underlying assumptions.

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