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Does Climate Change Increase Disease Severity Caused by Crop Pathogens? A Systematic Review
Isabel Mendez1,2,3, Patricio Javier Barra1,3, Giovanni Larama1
1Biocontrol Research Laboratory, Universidad de La Frontera, Temuco, Chile.
Plant Disease
|October 15, 2025
Summary
Climate change increases plant disease severity, especially from water deficit stress (WDS). Further research on abiotic stress interactions is crucial for crop protection and food security.
Area of Science:
- Plant Pathology
- Climate Change Science
- Agricultural Science
Background:
- Climate change alters abiotic factors impacting plant health.
- Plant diseases pose a significant threat to global food security.
Purpose of the Study:
- Evaluate literature (2013-2024) on climate change effects on plant disease severity.
- Identify knowledge gaps and research needs in plant pathology.
Main Methods:
- Systematic literature review of Scopus and Web of Science.
- PRISMA guidelines for article selection (106 articles analyzed).
- Categorization by abiotic stressor (WDS, eT°, eCO₂) and crop type.
Main Results:
- 54% of studies reported increased pathogen severity.
- Water deficit stress (WDS) was the most critical factor.
- Combined elevated temperature (eT°) and CO₂ also significantly increased disease severity.
Conclusions:
- Abiotic stresses significantly influence plant pathogen severity and soil dynamics.
- Integrated pest management and improved soil management are vital mitigation strategies.
- Further research on stress interactions is essential for safeguarding crops.
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