Expression and GO analysis of genes with a PAS shift. A and B, Comparison of gene expression levels of cstf77-2 versus Col-0 plants without 2,4-d treatment (A), and with 2,4-d treatment (B). Up-regulated genes are designated in red, down-regulated genes in blue, and not-changed genes in gray. C, Number of genes up-regulated (Up), down-regulated (Down), or unchanged (NC). D, GO analysis of genes with a PAS shift. E, GO analysis of genes with a PAS shift and expression level changes.