Full above ground leaf tissue from each biological replicate.  All samples collected at 21 days post germination Drought trial took place at the Oregon State University greenhouse with light intensity at 600 micro-mol m -2 s -1 at the base of the plant, relative humidity at 80% and the photoperiod programmed to cycle for 12-hour light and 12-hour dark.  Each plant received 1ml of 100x diluted solution of 15-15-15 N-P-K fertilizer and an additional supplement of 10% chelated iron until the first day of stress treatment. Pots were removed from tub of water and allowed to naturally dry out over time to induce drought stress. Total RNA from frozen seedling shoot sample was extracted as per manufacturer's protocol using RNA Plant reagent (Invitrogen Inc., USA), RNeasy kits (Qiagen Inc., USA), and treated with RNase-free DNase (Life Technologies Inc., USA). True-Seq kit (Illumina Inc.) was used to prepare RNA-seq libraries, according to the manufactureâ€™s protocol