Production vulnerability to wheat blast disease under climate change

Pequeno, D.N.L.; Berton Ferreira, T.; Fernandes, J.M.C.; Singh, P.K.; Pavan, W.O.; Sonder, K.; Robertson, R.; Krupnik, T.J.; Erenstein, O.; Asseng, S.

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Description

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.

URI

https://hdl.handle.net/10883/23007

Copyright

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Journal

Nature Climate Change

Journal volume

14

Place of Publication

London (United Kingdom)

Publisher

Nature Publishing Group

DOI

https://doi.org/10.1038/s41558-023-01902-2

AGROVOC

WHEAT; PLANT DISEASES; CLIMATE CHANGE; PRODUCTION

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CGIAR Initiatives

Initiative

Transforming Agrifood Systems in South Asia
Plant Health
Foresight

Impact Area

Climate adaptation & mitigation
Poverty reduction, livelihoods & jobs

Action Area

Resilient Agrifood Systems

Donor or Funder

CGIAR Trust Fund

CGSpace URL

https://hdl.handle.net/10568/139135

Collections

Sustainable Agrifood Systems
Wheat

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