Researchers studied how Aspergillus flavus fungus transports sugars, which is crucial for its growth, producing the toxic aflatoxin that contaminates crops like corn and peanuts. By removing genes responsible for sugar transport, they found that the fungus became weak, couldn’t infect plants or animals effectively, and stopped producing the dangerous aflatoxin. This discovery could help develop new strategies to prevent aflatoxin contamination in food and reduce serious fungal infections in humans.