Author response image 1. A de-etiolation assay was carried out with WT, GFP-TOC159GM:ppi2 and GFP-TOC159GM-K/R:ppi2 plant lines (three independent biological replicates with at least 50 seedlings).

The seeds were stratified and exposed for 3h to 120 µmol x m-2 x s^-1 of white light, then grown in the dark for 6 days. The etiolated seedlings were transferred to continuous light for two more days. The survival rate of de-etiolated seedlings based on cotyledon greening. Error bars indicate ± SEM (n = 3).