Table IV.

The fraction (in %) of As(III) in relation to the total As concentration in roots and shoots of H. lanatus clones tolerant (T) or non-tolerant (NT) to As

Plants were exposed to a range of As(V) concentrations in the low P (10 μm) and the high P (100 μm) nutrient solutions for 30 d. Data represent the mean (se in parentheses). *, includes dead plant material.

As(V) Concentration Phosphorus Concentration Clone Proportion of As(III)
In Roots In Shoots
μM % of total plant As
1.33 10 T 75 (4) 88 (2)
NT 89 (0.2) 93 (1)
100 T 38 (5) 54 (2)
NT 53 (8) 71 (2)
8 10 T 84 (1) 74 (4)
NT 87 (4) 67 (0.5)
100 T 50 (8) 47 (1)
NT 75 (5) 70 (7)
107 10 T 92 (3) 45 (1)
NT 9 (0.7)* 7 (0.3)*
100 T 77 (5) 32 (1)
NT 85 (1) 28 (1)