Divergent effects of cerium oxide nanoparticles alone and in combination with cadmium on nutrient acquisition and the growth of maize (Zea mays)

Frontiers in Plant Science

Plant Science

Cyren M. Rico¹  John-Paul Fox²  Lorenzo Rossi²  Muhammad Nadeem³  Ghulam Hassan Abbasi³  Wajid Umar⁴  Muhammad Zia ur Rehman⁵  Hamaad Raza Ahmad⁵  Muhammad Ashar Ayub⁶  Alan L. Wright⁷ 

[1] Department of Chemistry and Biochemistry, Missouri State University, Springfield, MO, United States;Horticultural Sciences Department, University of Florida, Institute of Food and Agricultural Sciences, Indian River Research and Education Center, Fort Pierce, FL, United States;Institute of Agro-Industry and Environment, The Islamia University of Bahawalpur, Punjab, Pakistan;Institute of Environmental Science, Hungarian University of Agriculture and Life Sciences, Godollo, Hungary;Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Punjab, Pakistan;Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Punjab, Pakistan;Institute of Agro-Industry and Environment, The Islamia University of Bahawalpur, Punjab, Pakistan;Horticultural Sciences Department, University of Florida, Institute of Food and Agricultural Sciences, Indian River Research and Education Center, Fort Pierce, FL, United States;Soil, Water and Ecosystem Sciences Department, University of Florida, Institute of Food and Agriculture Sciences, Indian River Research and Education Centre, Fort Pierce, FL, United States;

关键词: engineered nanoparticles;    cadmium stress;    root barriers;    root anatomy;    nutrient uptake;   

DOI  :  10.3389/fpls.2023.1151786

 received in 2023-01-26, accepted in 2023-03-13,  发布年份 2023

来源: Frontiers

【 摘 要 】

IntroductionThe increasing use of cerium nanoparticles (CeO2-NPs) has made their influx in agroecosystems imminent through air and soil deposition or untreated wastewater irrigation. Another major pollutant associated with anthropogenic activities is Cd, which has adverse effects on plants, animals, and humans. The major source of the influx of Cd and Ce metals in the human food chain is contaminated food, making it an alarming issue; thus, there is a need to understand the factors that can reduce the potential damage of these heavy metals.MethodsThe present investigation was conducted to evaluate the effect of CeO2-10-nm-NPs and Cd (alone and in combination) on Zea mays growth. A pot experiment (in sand) was conducted to check the effect of 0, 200, 400, 600, 1,000, and 2,000 mg of CeO2-10 nm-NPs/kg-1 dry sand alone and in combination with 0 and 0.5 mg Cd/kg-1 dry sand on maize seedlings grown in a partially controlled greenhouse environment, making a total of 12 treatments applied in four replicates under a factorial design. Maize seedling biomass, shoot and root growth, nutrient content, and root anatomy were measured. Results and discussionThe NPs were toxic to plant biomass (shoot and root dry weight), and growth at 2,000 ppm was the most toxic in Cd-0 sets. For Cd-0.5 sets, NPs applied at 1,000 ppm somewhat reverted Cd toxicity compared with the contaminated control (CC). Additionally, CeO2-NPs affected Cd translocation, and variable Ce uptake was observed in the presence of Cd compared with non-Cd applied sets. Furthermore, CeO2-NPs partially controlled the elemental content of roots and shoots (micronutrients such as B, Mn, Ni, Cu, Zn, Mo, and Fe and the elements Co and Si) and affected root anatomy.

【 授权许可】

Unknown   
Copyright © 2023 Ayub, Rehman, Ahmad, Rico, Abbasi, Umar, Wright, Nadeem, Fox and Rossi