Fig. 2

Expression of the flax phenylpropanoid genes determined by HT-RT-qPCR. a gene expression in leaves, roots and whole stems. b gene expression in the inner xylem-rich tissues (IT) and outer fiber-rich stem tissues (OT) of the stem. Values are means ± SD (n = 9). Asterisks indicates values that were determined significantly different from their control (a: Leaf and b: OT) using a Mann & Whitney’s test (* P < 0.01). The heat maps under the histograms represent the expression values in the roots and stems compared to the leaves (a) or in the IT compared to the OT (b). The colour codes and relative expression ranges in log2 values are represented on the left. * = significant difference in expression