Sustainable development of nanotechnology requires an understanding of the long term ecotoxicological impact of engineered nanomaterials on the environment. Cerium oxide nanoparticles (CeO2-NPs) have great potential to accumulate and adversely affect the environment owing to their widespread applications in commercial products. This study documented the chronic phenotypic response of tomato plants to CeO2-NPs (0.1-10 mg L-1) and determined the effect of CeO2-NPs on tomato yield. The results indicated that CeO2-NPs at the concentrations applied in this study had either an inconsequential or a slightly positive effect on plant growth and tomato production. However, elevated cerium content was detected in plant tissues exposed to CeO2-NPs, suggesting that CeO2-NPs were taken up by tomato roots and translocated to shoots and edible tissues. In particular, substantially higher Ce concentrations were detected in the fruits exposed to 10 mg L-1 CeO2-NPs, compared with controls. This study sheds light on the long term impact of CeO2-NPs on plant health and its implications for our food safety and security.
All Science Journal Classification (ASJC) codes
- Chemistry (miscellaneous)
- Metals and Alloys