Accumulation of nucleus-encoded transcripts related to the accumulation of the photosynthetic complexes. Average normalized expression profiles of transcripts are shown for the nucleus-encoded subunits of photosynthetic protein complexes (A), selected complex biogenesis and assembly factors (B), and selected enzymes and accessory proteins of the chlorophyll biosynthesis pathway (C). Transcripts were quantified by RNAseq, with mapping to the tobacco maternal progenitor, N. sylvestris. Transcripts are identified by their common gene name, Arabidopsis Gene Initiative identifier, and N. sylvestris gene identifier, with Arabidopsis Gene Initiative identifiers assigned based on BLAST homology to N. sylvestris transcripts (for details, see “Materials and Methods”). Heat map colors indicate deviation from the log10 transcript median value (0) across the time course, shown here averaged for the three biological repeats. Hierarchical clustering (Pearson, average linkage) was undertaken in Multiple Experiment Viewer: cluster distances are indicated (scale bars show node height). Samples (except the control) are named for time after lighting in minutes.