Transformation of ceria nanoparticles in cucumber plants is influenced by phosphate

Interactions between nanoparticles and plants: phytotoxicity and defense mechanisms

“…Moreover, recent studies indicated that CeO 2 NPs can be biotransformed to CePO 4 and Ce(CH 3 COO) 3 in several plant species (Zhang et al 2012;Cui et al 2014;Rui et al 2015;. The release of Ce 3+ ions from NPs was confirmed to play a critical role in the phytotoxicity of CeO 2 NPs to lactuca plants in the agar media (Cui et al 2014), aqueous suspensions and potting soil .…”

“…The production of ROS is based on the physicochemical properties of NPs as well as the test species. Various determinants, such as size and shape, solubility and particle dissolution, metal ions released from metal and metal oxide NPs, biotransformation of NPs, light and so forth, may cause the ROS generation and phytotoxicity (Dimkpa et al 2012;Rui et al 2015;. compared the toxicity of three types of CeO 2 NPs to different kinds of Lactuca genus plants.…”

Plant species-dependent transformation and translocation of ceria nanoparticles

“…Moreover, different acids and reducing substances have different capacities to dissolve the nCeO 2 . 8,29 For example, mugineic acids, which have been found to promote the transformation of CuO NPs, 30 are specifically excreted by gramineous plants (e.g., corn and wheat). 31 Turnip cabbage excretes two more kinds of organic acids (i.e.…”

Bioavailability of cerium oxide nanoparticles to Raphanus sativus L. in two soils

“…The increasing popularity of CeO2 NPs in industry has caused concern over 53 their potential toxicity in the environment. There have been many reports that indicate 54 potential toxicity of CeO2 NPs to bacteria, fish, and mammalian cells (Pelletier et and 100 mg/kg) in potting soil, but significantly inhibited biomass production and 78 disrupted plant stress responses at 1000 mg/kg (Gui et al, 2015). While these soil-based 79 studies provide significant new information on the fate and impact of CeO2 NPs in the 80 ecosystem, none of the previous studies has closely examined the impact of soil 81…”