Figure 6.

Wound-induced systemic potentials between the root and SE/CCs wounded and unwounded leaves of Arabidopsis thaliana wild type and glr3.3 glr3.6 mutant. (A) EPG recording of the potential between the soil electrode and a SE/CC electrode in an unwounded neighbor leaf in a glr3.3 glr3.6 mutant. Small wounds produced with tweezers in the middle of the leaf, on the midvein (B), induced transient potentials that propagated basipetally in the wounded leaf via the SE/CC network, both in the wild type (C) and in the double glr3.3 glr3.6 mutant (D). Arrows indicate the moment a leaf was cut (A), or wounded with tweezers (C,D).