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. 2006 Oct 10;4(10):e327. doi: 10.1371/journal.pbio.0040327

Figure 3. Impairment in ABA Activation of S-Type Anion Channel Currents in cpk3cpk6 Mutant Guard Cells.

Figure 3

(A and B) Whole-cell S-type anion channel current traces in wild-type (WT) guard cells in the absence of ABA (A) and in the presence of 50 μM ABA (B).

(C and D) Whole-cell S-type anion channel current traces in cpk3-1cpk6–1 double mutant guard cells in the absence of ABA (C) and in the presence of ABA (D).

(E) Average current-voltage curves of wild-type and cpk3-1cpk6–1 and cpk3-2cpk6–2 double mutant guard cells in the absence and presence of ABA (n = 8 WT; n = 7 cpk3-1cpk6–1; n = 3 cpk3-2cpk6–2 guard cells). GCPs were treated with 50 μM ABA or solvent control (0.1% ethanol) for 2 h prior to establishing gΩ seals. Open and closed symbols indicate −ABA and +ABA, respectively.