A new review in Annual Review of Phytopathology examines the use of native, atoxigenic strains of Aspergillus as a biocontrol approach to reduce aflatoxin contamination in crops. The strategy uses non-toxin-producing strains of the same fungal species to outcompete aflatoxin-producing strains in the field.
Aflatoxins are produced primarily by Aspergillus flavus and Aspergillus parasiticus and are among the most extensively studied mycotoxins, with documented effects on liver function and immune health. Reducing field contamination has direct implications for downstream exposure through food and feed.
The review summarizes deployment experience across multiple regions, discusses ecological considerations, and outlines remaining questions about long-term efficacy and strain stability.