[Linuron breakdown by fungi of the genus Aspergillus]

Aspergillus flavus isolated from soil as well as museum cultures from the genus Aspergillus transform linuron to 3,4-dichloroaniline by the reaction of demethylation with following hydrolysis of the amide bond; 3,4-dichloroaniline is then acetylated yielding 3,4-dichloroacetanilide. These products regulate the enzymes involved in demethylation and hydrolytic elimination of the side chain. Carbon sources added to a buffer mixture inhibit decomposition of the side chain.