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Related Experiment Videos

Differentiated gene expression in cells within yeast colonies.

L Mináriková1, M Kuthan, M Ricicová

  • 1Department of Genetics and Microbiology, Charles University, Vinicná 5, Prague 2, 12844, Czech Republic.

Experimental Cell Research
|November 22, 2001
PubMed
Summary

Researchers screened Saccharomyces cerevisiae genes to understand colony formation. They identified genes like CCR4, whose altered expression impacts yeast colony morphology and multicellular development.

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Area of Science:

  • Microbiology
  • Molecular Biology
  • Genetics

Background:

  • Yeast cells form multicellular colonies with strain-specific patterns on solid media.
  • Understanding the genetic regulation of colony formation is crucial for studying yeast development.

Purpose of the Study:

  • To identify genes involved in regulating Saccharomyces cerevisiae colony formation.
  • To investigate gene expression changes during yeast colony development.

Main Methods:

  • Utilized a DNA fragment library in front of the lacZ gene for screening.
  • Isolated transformants with blue/white patterned morphotypes indicating differential gene expression during colony formation.

Main Results:

  • Identified several genes with variable expression during colony morphogenesis, including CCR4, PAM1, MEP3, ADE5,7, and CAT2.

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  • Saccharomyces cerevisiae strains deleted in CCR4 exhibited less organized colony morphology.
  • Observed synchronization of expression patterns in neighboring colonies for some identified genes.

    • Conclusions:

    • Several genes, including CCR4, play significant roles in yeast colony morphogenesis.
    • The study provides new insights into the genetic control of multicellular development in yeast.