Fig. 1 Histochemical GUS staining of transgenic hairy roots infected with SCN (stained red with acid fuchsin). Hairy roots of (A) SCN-susceptible Agassiz, and (B) SCN-resistant Faribault cotransformed with bean chalcone synthase-gusA. Hairy roots of (C) Agassiz, and (D) Faribault cotransformed with Arabidopsis phenylalanine ammonia lyase-gusA