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Related Experiment Video

Updated: Dec 1, 2025

Resurrection of Dormant Daphnia magna: Protocol and Applications
07:37

Resurrection of Dormant Daphnia magna: Protocol and Applications

Published on: January 19, 2018

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Evolution of Generalists by Phenotypic Plasticity.

David T Fraebel1,2, Karna Gowda3,4, Madhav Mani5,6,7

  • 1Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.

Iscience
|November 9, 2020
PubMed
Summary
This summary is machine-generated.

Evolutionary adaptation can lead to specialists or generalists. This study shows that selecting Escherichia coli for faster migration in one sugar environment unexpectedly improved migration in all tested sugar environments, driven by phenotypic plasticity.

Keywords:
Evolutionary BiologyEvolutionary MechanismsMicrobiology

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Daily Transfers, Archiving Populations, and Measuring Fitness in the Long-Term Evolution Experiment with Escherichia coli
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Area of Science:

  • Evolutionary biology
  • Microbial ecology
  • Genetics

Background:

  • Organisms must balance specialization for specific tasks with generalist strategies for diverse environments.
  • Understanding the evolution of generalists versus specialists is crucial for evolutionary dynamics.

Purpose of the Study:

  • To investigate the evolution of bacterial range expansions.
  • To determine if selection for faster migration in one environment generalizes to others.

Main Methods:

  • Selected Escherichia coli for faster migration in porous media with one of four different sugars.
  • Measured growth and motility of evolved strains across all four sugar conditions.

Main Results:

  • Selection in a single sugar environment resulted in faster migration across all tested sugar environments.
  • Evolved strains exhibited phenotypic plasticity, employing different strategies for fast migration in each nutrient condition.

Conclusions:

  • Homogeneous environment selection can drive the evolution of phenotypic plasticity.
  • This plasticity enhances performance in novel or diverse environmental conditions, promoting generalist adaptation.