Phosphorus concentration and dry weight of roots and shoots of Holcus lanatus plants of As-tolerant (T) and non-tolerant (NT) clones exposed to different concentrations of As(V) (1.33, 8 or 107 μm) and phosphate (10 or 100 μm)
Data represent the means (se in parentheses). *, includes dead plant material.
| As(V) Concentration | Phosphorus Concentration | H. Ianatus Clone | Dry Wt | Phosphorus Concentration | ||
|---|---|---|---|---|---|---|
| Roots | Shoots | Roots | Shoots | |||
| μM | mg plant-1 | mg g-1 dry wt | ||||
| 1.33 | 10 | T | 129 (20) | 213 (4) | 1.8 (0.03) | 1.5 (0.07) |
| NT | 104 (20) | 171 (2) | 2.2 (0.2) | 1.5 (0.2) | ||
| 100 | T | 423 (80) | 234 (20) | 3.1 (0.1) | 5.4 (0.1) | |
| NT | 415 (30) | 173 (8) | 3.8 (0.2) | 6.1 (0.5) | ||
| 8 | 10 | T | 379 (50) | 162 (8) | 2.0 (0.06) | 1.4 (0.1) |
| NT | 123 (50) | 85 (8) | 3.1 (0.6) | 2.4 (0.6) | ||
| 100 | T | 430 (80) | 238 (4) | 3.1 (0.08) | 4.9 (0.5) | |
| NT | 380 (80) | 172 (6) | 3.5 (0.2) | 6.3 (0.2) | ||
| 107 | 10 | T | 76 (1) | 114 (20) | 3.0 (0.004) | 2.4 (0.04) |
| NT | 5 (0.1)* | 28 (7)* | 10.1 (0.5)* | 4.1 (0.2)* | ||
| 100 | T | 414 (30) | 198 (3) | 2.8 (0.1) | 4.0 (0.04) | |
| NT | 227 (20) | 142 (3) | 3.5 (0.4) | 4.5 (0.1) | ||