Aflatoxin diversity on a global scale

Aspergillus flavus and A. parasiticus are the most common agents of AF contamination of important agricultural commodities worldwide. With recent discoveries of sexual stages in A. flavus and A. parasiticus, it is possible that sexual recombination may increase genetic and AF chemotype diversity in populations. To determine the impact of sex on AF chemotype diversity we are examining molecular sequence variation within the AF gene clusters of A. flavus and A. parasiticus from geographically isolated fields in Africa (Benin), Argentina, Australia, United States (Georgia), and India.