Figure 1. Volcano plots for expressed genes in the four comparison groups.

Volcano plots for all the expressed genes in (a) RT-R, (b) S-R, (c) ST-RT, and (d) ST-S. X- and Y-axis present the log₂(ratio) for the two samples and −log10(FDR), respectively. Red (Up regulated) and green (down regulated) dots mean that the genes have significant difference (FDR ≤ 0.001, and at least with 2 fold differences, namely, |log₂(ratio)| ≥ 1), while the dark dots correspond to genes with no significant differences. The two vertical blue lines in each panel correspond to log₂(ratio) = 1 and log₂(ratio) = −1, respectively. The yellow horizontal line represents FDR = 0.001, namely, −log10(FDR) = 3. The inner Venn diagrams shows the numbers of expressed genes for the four comparison groups. Number of the DEGs in each group are listed in parentheses, numbers above and below the parentheses denote up- and down-regulated genes, respectively.