LecRK-I.9 expression is induced in an incompatible but not in a compatible interaction with P. brassicae.

GUS activity in leaves of a transgenic Arabidopsis line carrying promoter-GUS construct P_LecRK-I.9-GUS. (A) In mature non-inoculated leaves GUS activity is localized in the petiole (white arrows) and in veins (black arrows). GUS activity in leaves, 6 days post-inoculation (dpi) with the virulent P. brassicae isolate CBS686.95 (B), the avirulent P. brassicae isolate HH (C), P. infestans IPO-0 (D), 4 dpi with B. cinerea IMI169558 (E), and 2 days after wounding (F).