RNAi downregulation of
results in increased plant growth. Phenotype and development of PdGAUT12.1-KD transgenic lines. (A) Plant phenotypes of 3-month-old wild-type P. deltoides (left two plants), vector control (middle two plants), and PdGAUT12.1-KD lines (right two plants). (B) Height and (C) radial growth of PdGAUT12.1-KD lines in comparison to the controls. (D) Dry aerial biomass of WT and PdGAUT12.1-KD lines of three-month-old plants. n = 7 for plant height and stem diameter, n = 6 for dry weight measurement. Asterisks indicate values significantly different from WT by ANOVA followed by Tukey’s multiple comparison test, *P < 0.05, **P < 0.001. Error bars represent SE.