Figure 2. Root transcriptome profiles of Cd stress-responsive known miRNAs in tobacco.

Venn diagrams show the number of miRNAs regulated by Cd treatment (50 μM Cd stress for 5 days) and overlap between the two genotypes: Guiyan 1 (G) and Yunyan 2 (Y). The data are overlaps of miRNAs in Guiyan 1, which were down-regulated (down) (A), no change (NC) (B) and up-regulated (up) (C) in Yunyan 2. Within each genotype, fold change (Cd vs control) is log₂N, where changes in log₂N ≥ 1.5 are considered as up-regulated, between 0 < |log₂N| < 1.5 are considered as unchanged and log₂N ≤ -1.5 are considered as down-regulated, p < 0.01.