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Production vulnerability to wheat blast disease under climate change

Author

Listed:
  • Diego N. L. Pequeno

    (International Maize and Wheat Improvement Center)

  • Thiago B. Ferreira

    (International Maize and Wheat Improvement Center
    University of Florida)

  • José M. C. Fernandes

    (Brazilian Agricultural Research Corporation, Embrapa Trigo)

  • Pawan K. Singh

    (International Maize and Wheat Improvement Center)

  • Willingthon Pavan

    (University of Florida)

  • Kai Sonder

    (International Maize and Wheat Improvement Center)

  • Richard Robertson

    (International Food Policy Research Institute)

  • Timothy J. Krupnik

    (International Maize and Wheat Improvement Center)

  • Olaf Erenstein

    (International Maize and Wheat Improvement Center)

  • Senthold Asseng

    (HEF World Agricultural Systems Center)

Abstract

Wheat blast is a devastating disease caused by the fungal pathogen Magnaporthe oryzae pathotype Triticum that has spread to both neighbouring and distant countries following its emergence in Brazil in the 1980s. Under climate change conditions, wheat blast is predicted to spread primarily in tropical regions. Here we coupled a wheat crop simulation model with a newly developed wheat blast model, to provide quantitative global estimates of wheat blast vulnerability under current and future climates. Under current climatic conditions, 6.4 million hectares of arable land is potentially vulnerable to wheat blast. A more humid and warmer climate in the future (Representative Concentration Pathway 8.5) is likely to increase the area suitable for wheat blast infection, particularly in the Southern Hemisphere, and reduce global wheat production by 69 million tons per year (13% decrease) by mid-century. Impacts of climate change could be further exacerbated and food security problems increased.

Suggested Citation

  • Diego N. L. Pequeno & Thiago B. Ferreira & José M. C. Fernandes & Pawan K. Singh & Willingthon Pavan & Kai Sonder & Richard Robertson & Timothy J. Krupnik & Olaf Erenstein & Senthold Asseng, 2024. "Production vulnerability to wheat blast disease under climate change," Nature Climate Change, Nature, vol. 14(2), pages 178-183, February.
    • Handle: RePEc:nat:natcli:v:14:y:2024:i:2:d:10.1038_s41558-023-01902-2
    DOI: 10.1038/s41558-023-01902-2
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    References listed on IDEAS

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    1. Launay, Marie & Zurfluh, Olivier & Huard, Frederic & Buis, Samuel & Bourgeois, Gaétan & Caubel, Julie & Huber, Laurent & Bancal, Marie-Odile, 2020. "Robustness of crop disease response to climate change signal under modeling uncertainties," Agricultural Systems, Elsevier, vol. 178(C).
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    Cited by:

    1. Cécile Aubert & Yann Raineau & Marc Raynal & Nicolas Pasquier, 2024. "Multiple agricultural risks and insurance—issues, perspectives, and illustration for wine-growing," Post-Print hal-04732725, HAL.

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