Effects of Ceria Nanoparticles and CeCl₃ on Plant Growth, Biological and Physiological Parameters, and Nutritional Value of Soil Grown Common Bean (Phaseolus vulgaris)

Abstract

The release of metal ions may play an important role in toxicity of metal‐based nanoparticles. In this report, a life cycle study is carried out in a greenhouse, to compare the effects of ceria nanoparticles (NPs) and Ce3+ ions at 0, 50, 100, and 200 mg Ce kg−1 on plant growth, biological and physiological parameters, and nutritional value of soil‐grown common bean plants. Ceria NPs have a tendency to negatively affect photosynthesis, but the effect is not statistically significant. Ce3+ ionic treatments at 50, 100, and 200 mg Ce kg−1 result in increases of 1.25‐, 0.66‐, and 1.20‐fold in stomatal conductance, respectively, relative to control plants. Both ceria NPs and Ce3+ ions disturb the homeostasis of antioxidant defense system in the plants, but only 200 mg Ce kg−1 ceria NPs significantly induce lipid peroxidation in the roots. Ceria NP treatments tend to reduced fresh weight and to increase mineral contents of the green pods, but have no effect on the organic nutrient contents. On the contrary, Ce3+ ion treatments modify the organic compositions and thus alter the nutritional quality and flavor of the green pods. These results suggest that the two Ce forms may have different mechanisms on common bean plants.

Alleviation of nitrogen stress in rice (Oryza sativa) by ceria nanoparticles

“…However, CeO 2 NPs showed no significant positive effects on the plant growth under MN conditions and actually reduced the plant biomass at 500 mg L −1 , which is in accordance with results reported in many previous studies performed under normal growth conditions where CeO 2 NPs may exhibit toxic effects to plants at high concentrations. 25,26 Overall, the data suggest that CeO 2 NPs can improve the growth of rice under N stress, and the mechanisms involved were explored in the following experiments. In this study, the C content under different N conditions was not significantly different ( Fig.…”

Foliar Application of CeO2 Nanoparticles Alters Generative Components Fitness and Seed Productivity in Bean Crop (Phaseolus vulgaris L.)

“…Here, the change in wall conformation in pollen grains is also in agreement with increased membrane damage and electrolyte leakage of the same plant leaves subjected to nCeO 2 during earlier growth [ 2 ]. Lipid degradation could likely be a reason for the lack of membrane integrity in pollen grains, as evidenced by the increase of lipid peroxidation and membrane lipids degradation such as phospholipids and their polar heads, mono- and di-glycerides, and sterols [ 1 , 2 ].…”

“…The widespread application of nanoparticles (NPs) inevitably led to appearances of NPs in various edible plants. Therefore, due to the significant importance of NPs fate of entering into plants, extensive studies have concerned reciprocal NPs–plants interaction at the physio-chemical level [ 1 , 2 , 3 ]. Nevertheless, extra information is needed to reach relatively agreements on the safety of NPs environmentally before their use worldwide.…”

Influence of GdVO4:Eu3+nanocrystals on growth, germination, root cell viability and oxidative stress of wheat (Triticum aestivumL.) seedlings

“…The effect of NPs on lipid peroxidation (19,65–67), see the review in (13) and cell viability (8,32,66,68) has been studied, however, according to the present state of knowledge, the influence of LNDPs on the cells’ membrane damage and lipid peroxidation in plants has not been studied as yet. As mentioned above, the reported effects may be caused not only by LDNCs themselves but also by the ions released by these compounds.…”