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Evolthon: A community endeavor to evolve lab evolution.

Sivan Kaminski Strauss1, Dvir Schirman1, Ghil Jona2

  • 1Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel.

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|March 30, 2019
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Summary

Evolthon, a community challenge, explored experimental evolution strategies for microbes. Yeast evolved best with mating, while bacteria thrived by varying mutation rates, revealing effective evolutionary principles.

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Area of Science:

  • Evolutionary biology
  • Microbiology
  • Genetics

Background:

  • Experimental evolution aims to understand trait development under novel conditions.
  • Optimizing evolutionary strategies (e.g., mutagenesis, population size) is complex and lab-specific.

Purpose of the Study:

  • To explore diverse experimental evolution strategies for Escherichia coli and Saccharomyces cerevisiae.
  • To identify effective evolutionary regimens for adapting to low-temperature stress.

Main Methods:

  • A global community challenge (Evolthon) involving ~30 participants.
  • Participants evolved bacteria and yeast under various environmental and genetic conditions.
  • Competitions were held between evolved strains to assess performance.

Main Results:

  • Yeast evolution was significantly enhanced by incorporating mating (sexual reproduction).
  • Bacterial evolution success was linked to strategies exploring different mutation rates.
  • Performance and stability of evolved strains varied across different conditions.

Conclusions:

  • Mating is crucial for yeast evolution, while mutation rate variation aids bacterial adaptation.
  • The study reveals principles for effective experimental evolution and strain development.
  • Evolthon demonstrates a successful model for collaborative scientific discovery.