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Günther Gerisch1

  • 1Abt. Weidel, Max-Planck-Institut für Biologie, Tübingen, Deutschland.

Wilhelm Roux' Archiv Fur Entwicklungsmechanik Der Organismen
|March 30, 2017
PubMed
Summary

Dictyostelium discoideum cells aggregate and form fruiting bodies when they contact an air-liquid interface. This contact is crucial for inducing polarity, with bilateral contact leading to twin fruiting bodies.

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Area of Science:

  • Cell biology
  • Developmental biology
  • Microbiology

Context:

  • Dictyostelium discoideum serves as a model organism for studying cellular aggregation and differentiation.
  • Understanding the mechanisms of multicellular development is crucial in biology.

Purpose:

  • To investigate the role of the air-liquid interface in inducing polarity and fruiting body formation in Dictyostelium discoideum.
  • To analyze the impact of intercellular contact strength on agglutinate size and morphology.

Summary:

  • Dictyostelium discoideum cells exhibit exponential growth in suspension with a generation time of 3.3 hours at 20°C.
  • Cellular agglutination occurs at all developmental stages, leading to fruiting body formation upon contact with an air-liquid interface, which induces polarity.
  • Weakened intercellular contacts reduce agglutinate size, a phenomenon observed in morphologically deficient mutants.

Impact:

  • This research elucidates the environmental cues that trigger key developmental processes in Dictyostelium discoideum.
  • Findings contribute to understanding the physical and chemical factors governing pattern formation and morphogenesis in cellular slime molds.

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