Table II.
Root Al concentrations determined by ICP-MS analysis
| Plant Type | No
Desorptiona
|
Desorptionb
|
||
|---|---|---|---|---|
| 0 h | 3 h | 0 h | 3 h | |
| nmol Al mg−1 dry wt | ||||
| Wild type | 0.2 ± 0.1 | 42.3 ± 3.4 | 0.2 ± 0.1 | 29.3 ± 0.8 |
| alr-104 | 0.3 ± 0.1 | 28.6 ± 1.6 | 0.4 ± 0.2 | 31.7 ± 0.9 |
| alr-128 | 0.1 ± 0.1 | 26.3 ± 2.2 | 0.3 ± 0.1 | 30.7 ± 1.5 |
Values are means of six replicates ± se.
a
One-hundred roots were exposed to 25 μm AlCl3 for 0 or 3 h and then washed for 5 min in nutrient solution containing no Al.
b
One-hundred roots were exposed as described above and were then desorbed in 0.5 mm citrate, pH 4.2, at 0°C for 30 min.