MYB125 is a trans-acting regulator of genes from the lignin biosynthesis pathway. Single marker regression analysis between the local-regulatory SNP of MYB125 (with the smallest P-value) and the expression of (A) 4CL3 (P-value = 0.015); (B) CSE (P-value = 0.019); (C) F5H (P-value = 0.005); (D) C3′H (P-value = 0.003); (E) PAL2 (P-value = 0.014); (F) CCoAOMT1 (P-value = 0.015); (G) PAL4 (P-value = 0.003); (H) COMT1 (P-value = 0.003); and (I) C4H1 (P-value = 0.013). (J) Single marker regression analysis between the local-regulatory SNP of MYB125 (with the smallest P-value) and the lignin content percentage (P-value = 0.003). Boxplot for expression of genes from the lignin biosynthesis pathway (A–J) and lignin content percentage (I) plotted as an effect of genotypes at the SNP, with the smallest P-value, in the region of MYB125. The horizontal line represents the median, and the vertical lines mark the range of the minimum and maximum values.
