Figure 7.

Secondary Metabolites Are Required for Arabidopsis Resistance to the Necrotrophic Fungus P. cucumerina.

Average disease ratings (±sd) of wild-type plants and of the cyp79b2 and cyp79b3 mutants, which are impaired in secondary metabolite biosynthesis, at 10 d after inoculation with P. cucumerina are shown. The disease rating varies between 0 (no symptoms) and 4 (dead plants). At least 10 plants per genotype were tested. The agb1-1 mutant and the transgenic 35S:ERF1, which show enhanced susceptibility and resistance to P. cucumerina, respectively, were included for comparison (Berrocal-Lobo et al., 2002a; Llorente et al., 2005). Asterisks indicate values significantly different (** P < 0.01, * P < 0.05, t test) from those of wild-type plants.