Figure 7.

Schematic Representation of the Jasmonic Acid Rescue Experiment.

Inflorescences of delayed dehiscence1 (dde1) and wild-type plants were tagged after removal of all open flowers. Exogenous jasmonic acid was applied to the floral buds of the tagged inflorescences over a 6-day period (see Methods). After 6 to 8 days, the inflorescences were examined for siliques.

(A) delayed dehiscence1 plant tagged at start of experiment.

(B) delayed dehiscence1 plant at end of experiment. After jasmonic acid treatment, seed set was observed, as demonstrated by the presence of siliques. Siliques were found at specific positions within the developing inflorescence.

(C) Wild-type control plants at end of the experiment. Wild-type plants set seed under all experimental conditions (see Methods). Floral buds on wild-type inflorescences continued to set seed after completion of the jasmonic acid treatment.