Table 1.
Aluminum (Al) and nitric oxide (NO) content in wheat root apices. Four-day-old seedlings of cultivars Anahuac (Al-sensitive) and BH1146 (Al-tolerant) were hydroponically incubated with 200 µM Ca2+ (Ctrl) or 75 µM AlCl3 in 200 µM Ca2+ for 48 h. Alternatively, seedlings were pre-treated with NO3−, L-arginine (Arg) or S-nitrosoglutathione (GSNO) at 300 µM for 24 h followed by exposure to Al for 48 h. Values correspond to the percentage of green fluorescence pixels present in the images of Fig. 1, Fig. 3.
| Treatments | Al (%) |
NO (%) |
||
|---|---|---|---|---|
| Anahuac | BH1146 | Anahuac | BH1146 | |
| Ctrl | 0.0 | 0.0 | 15.5 | 42.6 |
| Al | 43.0 | 38.0 | 29.9 | 34.8 |
| NO3−/Al | 38.3 | 22.7 | 35.0 | 38.4 |
| Arg/Al | 6.3 | 9.9 | 36.8 | 30.4 |
| GSNO/Al | 49.7 | 34.6 | 48.4 | 32.2 |