Heat-map of 52 differentially expressed genes. These genes were involved in transcription factor, signal transport, stress kinase, phytohormone signalling, and the defence/stress response, in the drought response and acclimation of Chinese fir. These genes were differentially expressed among the control 0 h (CK), drought treatments 5 day (C), 10 day (D) and 15 day (E), and re-watering (F). The bar represents the expression level of each gene (log2RPKM [number of reads per kilobase per million clean reads]) in the drought response and acclimation as indicated by blue/white/red rectangles. Low to high expression is indicated by a change in colour from blue to white to red. Complete information for each gene list can be found in Table S5.