Fig. 2

Expression profiles of ZIP genes of Arabidopsis and rice in response to Cd stress. a 1-week-old and 10-day-old seedlings of Arabidopsis and rice were treated with 300 μM CdCl₂ for 3 days. Scale bars indicate 1 cm. b Changes in the expression of the 26 ZIP genes in response to Cd exposure Gene expression level was normalized using shoot expression level of each gene in the controls as the calibrator. (n = 3, Student t test, *indicates P < 0.05, **indicates P < 0.01)