Figure 3.

Representative leaf mesophyll protoplasts transiently expressing the 35S::bZIP60 intron:GFP reporter construct under normal (-DTT) and ER stressed (+DTT) conditions in two genotypes: wild type (Col-0) and the PDI9 OE under the 40× objective at a zoom factor of 1×. The GFP, mCherry, and a merge of the two channels are shown, as well as a corresponding brightfield image of the protoplast cells. Scale bars are indicated at 25 microns, μ $\mu \mathrm{f}\mathrm{m}$.