Fig. 2.

Expression from the faeB promoter is induced by various aromatic compounds. a Spores of reporter strains JR9.9 and JR9.19 and of control strains N402 and MA234.1 were inoculated on MM containing 1 % D-fructose, 10 mM acetamide and 2.5 mM of one of the different aromatic compounds. Pictures were taken after incubation for 7 days at 30 °C. The green, orange or red arrows next to the plates indicate high, moderate or low expression from the faeB promoter, respectively. b Chemical structures of nine of the aromatic compounds tested. The green, yellow or red dots, represent relative high, moderate or low induction of expression from the faeB promoter