Transgenic plant species engineered to inhibit aflatoxin production in Aspergillus species, methods of producing such transgenic plant species that can inhibit aflatoxin production, and compositions for such transgenic plant production. The transgenic plants harbor an RNAi cassette expressing dsRNA for an enzyme, such as aflC, that is required for aflatoxin biosynthesis. The dsRNA may include at least one, at least two, at least three, or more than three sections of the target enzyme gene.
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