Imaging conditions
Delayed fluorescence imaging was carried out using Lumo Reteiga CCD
cameras (QImaging, Canada) housed in two temperature-controlled
cabinets. Six 96-well plates can be imaged simultaneously in each
cabinet. Imaging conditions were exactly those described for constant
light (L:L) imaging of Brassica leaves in Rees et al. 2019 (Rees
et al., 2019). Images were captured every hour with a 1-minute exposure
time.