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Related Experiment Videos

Pathogen population genetics, evolutionary potential, and durable resistance.

Bruce A McDonald1, Celeste Linde

  • 1Institute of Plant Sciences, Plant Pathology Group, Federal Institute of Technology, ETH-Zentrum, LFW, CH-8092 Zürich, Switzerland. bruce.mcdonald@ipw.agrl.ethz.ch

Annual Review of Phytopathology
|July 31, 2002
PubMed
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Pathogen evolutionary potential, linked to genetic structure, predicts resistance breakdown. High potential pathogens have mixed reproduction and high gene flow, posing greater risks than low potential pathogens.

Area of Science:

  • Evolutionary biology
  • Pathogen genetics
  • Population genetics

Background:

  • Pathogen populations evolve to overcome host resistance.
  • Understanding pathogen evolutionary potential is crucial for disease management.

Purpose of the Study:

  • To propose a framework for predicting pathogen evolutionary potential based on genetic structure.
  • To identify characteristics of high-risk and low-risk pathogens.

Main Methods:

  • Analysis of pathogen population genetic structure.
  • Framework development based on reproduction system, gene flow, effective population size, and mutation rates.

Main Results:

  • Pathogens with mixed reproduction, high gene flow, large populations, and high mutation rates have high evolutionary potential.

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  • Pathogens with asexual reproduction, low gene flow, small populations, and low mutation rates have low evolutionary potential.

    • Conclusions:

    • Pathogen genetic structure is a reliable indicator of evolutionary potential.
    • This framework aids in developing durable resistance strategies against pathogens.