Phenotypic analyses of the various genetic backgrounds subjected to temporary ER stress. A. WT, rbohd rbohf, and ire1a ire1b seedlings were subjected to ER stress and were imaged after a 3 day recovery. From the seedlings grown in (A) shoot fresh weight (B), average total chlorophyll (C), and root length (D), were recorded as described in the materials and methods. Data represent the mean ± SE. (at least 10 biological replicates). Letters above each data point indicate statistically significant groups using Student’s unpaired t-test (p<0.05).