Figure 6.

The aca4-1/11-1 mutants have total Ca²⁺ levels that are similar to the wild type (Ws) under both suppressed and lesion-triggered conditions. Plants were grown hydroponically for 20 d under lesion-suppressed conditions (i.e. with 15 mm NH₄NO₃ supplement) and either harvested directly (lesion-suppressed samples) or transferred to standard hydroponic solution for an additional 30 h before harvest (lesion-triggered samples). Ca²⁺ concentrations were determined by ICP-AES (n = 12 plants) and are reported as means ± se. DW, Dry weight.