Figure 6.

ABA Signaling Affects Arabidopsis Resistance to R. solanacearum and P. cucumerina.

The resistance of abi1-1, abi2-1, and aba1-6 mutants to R. solanacearum (A) and P. cucumerina (B) was evaluated. Average disease ratings (±sd) of wild-type plants (Ler and Col-0), abi1-1 and abi2-1 mutants (Ler background), and the aba1-6 mutant (Col-0 background) after inoculation with R. solanacearum GMI1000 (5 days after inoculation) or P. cucumerina (12 days after inoculation) are shown. The disease rating varies between 0 (no symptoms) and 4 (dead plants). At least 10 plants per genotype were tested. Asterisks indicate values significantly different (** P < 0.01, * P < 0.05, t test) from those of wild-type plants.