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Evolution of antifungal-drug resistance: mechanisms and pathogen fitness

James B Anderson1

  • 1Department of Botany, 3359 Mississauga Road North, University of Toronto, Mississauga, Ontario, Canada L5L 1C6. janderso@utm.utoronto.ca

Nature Reviews. Microbiology
|June 15, 2005
PubMed

Insights

Fungal pathogens adapt and evolve resistance to antifungal drugs. Understanding adaptation limits can help predict resistance and develop strategies to trap fungi in evolutionary dead ends.

Area of Science:

  • Microbiology
  • Evolutionary Biology
  • Mycology

Background:

  • Fungi are adaptable microorganisms.
  • Antifungal drug use drives the evolution of drug resistance in fungal pathogens.
  • Mechanisms of antifungal resistance are known, but their impact on pathogen fitness across diverse environments is less understood.

Purpose of the Study:

  • To investigate the impact of antifungal resistance mechanisms on fungal pathogen fitness in various environments.
  • To explore the spectrum of resistance mutations and their interactions.
  • To identify strategies for managing antifungal drug resistance by understanding adaptation limits.

Main Methods:

  • Conducting evolution experiments with fungal pathogens under antifungal drug selection.
  • Measuring the fitness of fungal populations with different resistance mechanisms.
  • Analyzing the interactions between various resistance mutations.

Main Results:

  • Evolution experiments can reveal the full spectrum of potential resistance mutations.
  • Interactions among different resistance mechanisms can be elucidated.
  • Fitness costs associated with resistance mechanisms vary depending on environmental conditions.

Conclusions:

  • Understanding the limits of fungal adaptation is crucial for predicting drug resistance.
  • Evolutionary experiments provide insights into managing antifungal resistance.
  • Identifying evolutionary dead ends may offer novel strategies to control fungal pathogens.

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