Figure 3

The expression of the gene changes among the different cold stress stages. A. The heat-map of the total differentially expressed genes (DEGs). Columns and rows in the heat maps represent samples and genes, respectively. Sample names are displayed below the heat maps. CK Results of controls, CT2h and 16h results of cold treatments. Color scale indicates fold changes of gene expression. A fold change of ≥1 is shown in green (increased transcript abundance), a fold change of ≤ -1 is shown in red (decreased transcript abundance), and no change is indicated in black. The results show that 1,028 transcripts were differentially expressed between the control and cold treatments 2 h and 16 h. B. Changes in gene expression profile among the different cold stress stages. The number of up-regulated and down-regulated genes between C0h-VS-T2h, C0h-VS-T16h and T2h-VS-T16h are summarized. Between the C0h and T2h Lilium lancifolium libraries, there are 115 genes up-regulated and 228 genes down-regulated, while there are 326 up-regulated genes and 828 down-regulated genes between the C0h and T16h Lilium lancifolium libraries, and 410 up-regulated genes 848 down-regulated genes between the C2h and T16h Lilium lancifolium libraries.