Fig. 3

Gene expression profiles in the four tissues of C. gracile plants. (a) unigenes expression distribution in all four tissues (leaves, flowers, stems, and roots). The X-axis represents the sample name, and Y-axis represents the transcript levels. The level of gene expression is indicated by varying color intensity: low expression (FPKM ≤1), medium expression (FPKM 1–10), and high expression (FPKM ≥10). (b) Expressed unigenes in the four tissues by a boxplot. The X-axis indicates the type of C. gracile tissues and the Y-axis indicates the log10 (FPKM + 1) values of unigenes. Significant differences were determined by the Kruskal–Wallis nonparametric test