Fig. 7From: The Populus alba cationic cell-wall-bound peroxidase (CWPO-C) regulates plant growth, lignin content and composition in poplarEffect of CWPO-C expression on stem and xylem formation in transgenic poplar. a Cross-sectional (Cr) area of whole basal stem. b Ratio of xylem/whole cross-sectional (Xy/Cr) area. Data are presented relative to the WT, which was set to 1. Mean ± standard deviation of four biological replicates. *: significant difference (p ˂ 0.05), **: significant difference (p ˂ 0.01) compared with WT (Student’s t test). OE1, OE2 and OE4: CWPO-C OE line 1, 2 and 4. RNAi1 and RNAi2: CWPO-C RNAi line 1 and 2Back to article page