Figure 2

Serial images of ⁷⁴As behavior and time course of the amount of arsenic in different regions of P. vittata. (a) Photograph of test plants in the experimental apparatus. The solid red rectangles indicate the field of the PETIS imaging. (b) Serial images of P. vittata (0–168 h). Each frame was created from the integration of original images collected every 5 min. (c) Examined regions in the plants. The blue trapezoid indicates the region of the solution, the purple rectangle indicates the solution with the roots inside, the yellow-green rectangle indicates the roots above the solution, the black rectangle indicates the rhizomes and the green rectangle indicates the fronds. Time course of the amount of As in the regions shown in (c) fed with 0.2 μM AsV (d), fed with 20 μM AsV (e), fed with 200 μM AsV (f) and fed with 2000 μM AsV (g), all experiments included 2 kBq of ⁷⁴As-labeled AsV.