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Related Experiment Video

Updated: Jun 20, 2026

Quantification of Fungal Colonization, Sporogenesis, and Production of Mycotoxins Using Kernel Bioassays

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Published on: April 23, 2012

Investigating the Correlations Between Weather Factors and Mycotoxin Contamination in Corn: Evidence from Long-Term

Alexander Platzer¹, Younos Cherkaoui², Barbara Novak¹

¹dsm-firmenich, Animal Nutrition and Health R&D Center, Technopark 1, 3430 Tulln, Austria.

|February 25, 2025

Summary

Climate change impacts mycotoxin levels in corn. Higher temperatures correlate with Aspergillus toxins and fumonisins, while deoxynivalenol and zearalenone decrease. Dew point and wind direction also play roles.

Keywords:

T-2 toxin aflatoxins climate change deoxynivalenol fumonisins mycotoxins ochratoxin A weather zearalenone

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Area of Science:

Agricultural Science
Environmental Science
Food Safety

Background:

Mycotoxins, toxic fungal metabolites in food and feed, pose health risks to humans and animals.
Fungal growth and mycotoxin production are significantly influenced by weather patterns.
Climate change is altering weather, potentially increasing the frequency and severity of mycotoxin contamination events.

Purpose of the Study:

To investigate the long-term correlations between weather trends and mycotoxin levels in corn.
To analyze the impact of 136 specific weather features on mycotoxin contamination over 17 years.

Main Methods:

Analysis of corn samples from 12 countries spanning a 17-year period (2006-2022).
Statistical correlation of mycotoxin concentrations with 136 distinct weather variables.
Examination of relationships between temperature, dew point, wind direction, and specific mycotoxins.

Main Results:

Positive correlation found between temperature and Aspergillus toxins/fumonisins.
Negative correlation observed between temperature and deoxynivalenol/zearalenone.
The 90th percentile dew point showed a positive correlation with Aspergillus mycotoxins; wind direction also revealed significant patterns.

Conclusions:

Long-term weather trends, particularly temperature and dew point, significantly impact mycotoxin profiles in corn.
Findings provide a basis for understanding current mycotoxin-weather dynamics.
Results can inform projections of future mycotoxin contamination risks under changing climatic conditions.