Fig. 7

RT-qPCR analysis of four differentially expressed genes. A Relative expression levels of four genes in leaves after PEG treatment; B Relative expression levels of four genes in roots after PEG treatment; (C) Relative expression levels of four genes in leaves after CdCl₂ treatment; D Relative expression levels of four genes in roots after CdCl₂ treatment. The Y-axis and X-axis represent the six time points of treatment and relative expression levels, respectively. The relative expression levels of the genes at 0 h were set to 1 and calculated using a normalization method. The mean ± standard deviation (SD) was obtained from three biological replicates and three technical replicates. Error bars indicate the standard deviation. Different letters indicate significant differences at P < 0.05 level, while the same letters indicate no significant differences