Publications by authors named "Ana Cecilia Barrios"
Article Synopsis
- The study explores how surface modification impacts the interaction of different cerium oxide nanoparticles with tomato plants, focusing on their effects on plant growth and fruit quality.
- Results indicated that citric acid-coated nanoceria (nCeO+CA) significantly reduced dry weight and sugar content in tomatoes across various concentrations, while bulk cerium oxide (bCeO) showed different effects by increasing certain sugars at higher doses.
- Overall, both types of cerium treatments altered the nutritional quality of the tomato fruit, with the coated nanoparticles having a notable impact on fruit macromolecule content and nutritional elements.
Little is known about the physiological and biochemical responses of plants exposed to surface modified nanomaterials. In this study, tomato (Solanum lycopersicum L.) plants were cultivated for 210days in potting soil amended with uncoated and citric acid coated cerium oxide nanoparticles (nCeO2, CA+nCeO2) bulk cerium oxide (bCeO2), and cerium acetate (CeAc).
View Article and Find Full Text PDFDespite the remarkable number of publications on the interaction of engineered nanoparticles (ENPs) with plants, knowledge of the implications of ENPs in the nutritional value of food crops is still limited. This research was performed to study the quality of rice grains harvested from plants grown in soil treated with cerium oxide nanoparticles (nCeO2). Three rice varieties (high, medium, and low amylose) were cultivated to full maturity in soil amended with nCeO2 at 0 and 500 mg kg(-1) soil.
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- - CeO₂ nanoparticles (NPs) can accumulate in plants without any modifications, raising concerns about potential risks to human health through consumption.
- - In a study involving cilantro plants grown in soil with varying amounts of CeO₂ NPs, 125 mg kg⁻¹ led to longer roots and increased enzymatic activity, indicating a positive effect on plant growth and health.
- - Spectroscopic analysis showed that the presence of CeO₂ NPs at 125 mg kg⁻¹ altered the chemical composition of carbohydrates in cilantro, suggesting the nanoparticles might affect the nutritional quality of the plant.
Previous studies have reported the uptake of cerium oxide nanoparticles (nCeO2) by plants, but their physiological impacts are not yet well understood. This research was aimed to study the impact of nCeO2 on the oxidative stress and antioxidant defense system in germinating rice seeds. The seeds were germinated for 10 days in nCeO2 suspension at 62.
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