Figure 5

Autoradiography of static ⁷⁴As in rhizomes and roots of P. vittata exposed to As for 168 h. (a) Fed with 0.2 μM AsV. (b) Fed with 20 μM AsV. (c) Fed with 200 μM AsV. (d) Fed with 2000 μM AsV. All experiments included 2 kBq of ⁷⁴As-labeled AsV. Rhizomes (red arrow) and roots (purple arrow).