Table II.
Tissue metal accumulation in ± Fe-grown pea seedlings exposed to 0.2 μm Cd
| Treatment | Tissue | Content
|
|||
|---|---|---|---|---|---|
| Cd | Zn | Cu | Mn | ||
| μg (g dry wt)−1 | |||||
| Control | Shoots | 4.2 (0.1) | 171 (12) | 10 (0.3) | 75 (7.5) |
| −Fe | Shoots | 1.5 (0.2) | 125 (13) | 21 (2.4) | 102 (11) |
| Control | Roots | 147 (50) | 250 (62) | 29 (6.4) | 150 (29) |
| −Fe | Roots | 279 (6.5) | 478 (21) | 213 (9.8) | 244 (44) |
Seedlings were grown hydroponically in modified Johnson's nutrient solution. Fe was withheld from the growth solutions of −Fe seedlings on d 9. On d 12, 0.2 μm Cd(NO3)2 was added to the growth solution. Tissue was harvested on d 14. Values represent means (n = 3). Values in parentheses represent se.