Figure 8.

Expression patterns of secondary cell wall biosynthesis genes from the coexpression network in PdOLP1-OE and PdOLP1-DR plants and poplar protoplasts. (a) Expression patterns of wood formation-related genes upregulated in PdOLP1-OE plants and downregulated in PdOLP1-DR plants. (b) Expression patterns of secondary wall biosynthesis genes upregulated in PdOLP1-DR plants and downregulated in PdOLP1-OE plants. UBQ1 was used as a reference gene, and the expression level of each gene in the WT background was set to 1. Asterisks indicate a significant difference between the WT and the transgenic lines (* p < 0.05).