The roles of red light and phytochrome A/B in photomorphogenesis

Analysis of etiolated seedlings exposed for 1hr to red light. Phytochromes are red/far-red light receptors, palying important roles in photomorphogenesis. Results suggest that red light and phytochromes regulate a set of genes' expression in seedlings. Overall design: WT, phyB and phyAB seedlings grown in darkness for 5 days, and then WT seedlings were remained in darkness, or WT, phyB and phyAB seedlings were exposed to 50 µmol m-2 s-1 red light for 1hr, respectively. We analysed the transcriptome profile of these samples. We have two samples for each red light or dark treatement that represent two replicates in each case.