Figure 4.

Atgork Root Epidermal PM Retains the OH^•-Activated Conductance.

(A) Whole-cell recordings from wild-type (WT; Wassilewskija) root epidermal protoplasts. Left: Current traces under control conditions, elicited by step changes in voltage from a representative protoplast. Center: the same protoplast after exposure to extracellular OH^• generated by 1 mM Cu/Asc. Right: Mean ± se current-voltage (I-V) relationships for control (open circles) conditions and OH^• exposure (n = 6). Recording conditions are as in Figure 1.

(B) As in (A) but with data gathered from gork (n = 6).