Figure 4.

Phenotypic analysis of OX49 and SRDX49 lines. A and B, Growth of 5-d-old Arabidopsis Col-0, OX49, and SRDX49 seedlings germinated on 1/2 MS medium and then transferred to fresh medium supplemented with 30 μm Cd for 5 d. A, PR length. B, Relative PR growth of seedlings treated with 30 μm Cd compared with untreated seedlings. Three independent experiments were performed using at least 20 plants per experiment. Error bars represent the sd (n = 3). C and D, Four-week-old hydroponics-grown Col-0, OX49, myb49, and SRDX49 seedlings were transferred to fresh medium containing 10 µm CdCl₂ for 2 d, and the leaves (C) and roots (D) were harvested and subjected to Cd content analysis by ICP-AES. Error bars represent the sd (n = 6). Different letters indicate that values were significantly different at P < 0.01 according to Tukey’s test. DW, Dry weight.