Morphological Instabilities in a Growing Yeast Colony: Experiment and Theory

Thomas Sams, Kim Sneppen, Mogens Jensen, Clive Ellegaard, Bjørn Eggert Christensen, Ulf Thrane

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    Abstract

    We study the growth of colonies of the yeast Pichia membranaefaciens on agarose film. The growth conditions are controlled in a setup where nutrients are supplied through an agarose film suspended over a solution of nutrients. As the thickness of the agarose film is varied, the morphology of the front of the colony changes. The growth of the front is modeled by coupling it to a diffusive field of inhibitory metabolites. Qualitative agreement with experiments suggests that such a coupling is responsible for the observed instability of the front.
    Original languageEnglish
    JournalPhysical Review Letters
    Volume79
    Issue number2
    Pages (from-to)313-316
    ISSN0031-9007
    DOIs
    Publication statusPublished - 1997

    Bibliographical note

    Copyright (1997) by the American Physical Society.

    Keywords

    • GROWTH
    • PATTERNS
    • DIRECTIONAL SOLIDIFICATION
    • DYNAMICS
    • BACTERIAL COLONIES

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