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Fungi in a changing world: growth rates will be elevated, but spore production may decrease in future climates.

Athanasios Damialis1, Aqilah B Mohammad, John M Halley

  • 1School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, TW20 0EX, UK, th_damialis@hotmail.com.

International Journal of Biometeorology
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Summary
This summary is machine-generated.

Climate change significantly impacts fungal growth, accelerating mycelium development but reducing spore production in most species. This has implications for allergenic fungi and human health in future climates.

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Area of Science:

  • Environmental science
  • Mycology
  • Climate change research

Background:

  • Fungal spores are significant allergens impacting human health.
  • Limited understanding exists regarding climate change effects on fungal spore production.

Purpose of the Study:

  • To investigate climate change impacts on fungal growth and spore production.
  • To simulate future environmental conditions on allergenic fungal species.

Main Methods:

  • Six key fungal species were grown under simulated temperature and nutrient conditions.
  • Temperatures reflected past decades and a 2100 Intergovernmental Panel on Climate Change (IPCC) scenario.
  • Mycelium growth rate, spore production, and inter-species competition were analyzed.

Main Results:

  • All species exhibited faster mycelium growth at higher temperatures, especially under the 2100 scenario.
  • Most species grew better with lower nutrient availability, except for E. purpurascens.
  • Spore production generally decreased with increased temperature, with C. cladosporioides being a notable exception.

Conclusions:

  • Future climates may lead to increased fungal mycelium growth but reduced spore production.
  • This shift raises questions about the future allergenicity potential of fungi.
  • Fungal species show varied responses to temperature and nutrient changes, influencing ecological dynamics.