Fig. 1

Serial images of ⁶⁵Zn movement in the dwarf rice plants. a Photograph of test plants in the experimental apparatus. The dotted and solid rectangles indicate the field of view of the PETIS during the imaging of the below-ground and the above-ground parts of the plants, respectively. b Serial images of the below-ground part (0–24 h). c Serial images of the below-ground part (24–96 h). Each frame was created from the integration of 18 (b) or 54 (c) original images collected every 10 min