Fig. 2

Blue light exposure alters expression of stress response, photoreceptor development, and circadian rhythm genes in six-day-old photoreceptors. a Multidimensional scaling plot of distances between gene expression profiles based on log₂ fold change. The plot shows three biological replicates for affinity-enriched photoreceptor nuclear RNA from male day one or day six flies exposed to 3 h blue light or 3 h dark (control). b Volcano plots showing the differential gene expression profiles in day one (left panel) or day six (right panel) photoreceptors induced by blue light relative to dark (control). Fold change was plotted as log₂(fold change) for each gene relative to its false discovery rate (−log₂[FDR]). Genes with significantly differential expression (FDR < 0.05) are highlighted in red or blue, and GFP is shown in green for comparison