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Impacts of Cerium Oxide Nanoparticles ( n CeO 2 ) on Crop Plants

Nanomaterials in Plants, Algae, and Microorganisms, Vol: 1, Page: 311-324
2018
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Book Chapter Description

This chapter gives an overview of the effects of cerium oxide nanoparticles ( n CeO 2 ) on cultivated plants. The chapter is organized by distinguishing scientific works based on plant growth stage. Therefore the first part is devoted to germination and seedlings growth-based studies, and subsequent examination leads to studies on adult plants and full-cycle experiments. Considering the important implications of crops for human consumption the effects of n CeO 2 treatments on yield and quality of crop plants become a pivot point to discuss and elaborate. According to the current arena of studies, cerium oxide nanoparticles ( n CeO 2 ) show a negative effect on biomass at root level in the majority of plants, whereas the effect is inversed at shoot level. At the physiological level, the photosynthetic pigments decrease but the gas exchange related to photosynthesis increases. Plant stress metabolism therefore promotes enzyme activities to cope with the increase of H 2 O 2 levels in the plants treated with high n CeO 2 concentration. Finally, n CeO 2 also affects crop yield and the nutritional quality of edible products. Thus the main aim of this chapter is to bring all the studies on n CeO 2 and crop plant interactions under an umbrella and to deliver the significant information for researchers and academicians.

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