<p>The averaged data for six biological replicates were grouped into three clusters with the Pearson correlation as the distance metric. Gene profiles are colored according to the gene product’s function. Green: photosynthesis-related genes, blue: ribosome-related genes, red: plastid-encoded RNA polymerase genes, grey: miscellaneous genes. Clustering and visualization by Multiexperiment Viewer <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0108760#pone.0108760-Saeed1" target="_blank">[38]</a>.</p
