Figure 3.
(a) Light-conditioned leaf epidermis (top pictures) showing mostly open stomata and the same leaf epidermis after 1 h exposure to purified PAMP or live bacteria (bottom pictures). Note that most stomatal pores are closed after exposure to bacteria or PAMPs. (b) Stomatal response in light-exposed epidermal peels of Arabidopsis leaves exposed to water, DC3000, or DB29. DB29 is a coronatine-biosynthesis-defective (cor) mutant (17). Stomatal response to this cor mutant is similar to response to DC3118, another cor mutant (74, 77).