Bright-field images of rice plants showing C
uptake. (A) Bright field images of root and leaf portions of 1-week-old rice seedlings. Control plants without any C70 (a–d) and treated plants showing C70 uptake (e and f). Arrows indicate the aggregation of nanoparticles in corresponding C70 treated plant tissues (scale bars are 20 μm). (B) (a) Bright field image of the leaf portion of a second generation rice plant. C70 aggregates were mostly found near the leaf vascular system. (b) TEM image of the leaf cells showing C70 particles (C70: 20 mg L−1). (c) TEM image of C70 particles with higher magnification .