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12 резултата
Iron plaque reduces cerium uptake and translocation in rice seedlings (Oryza sativa L.) exposed to CeO2 nanoparticles with different sizes.
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This study aims to assess the role of iron plaque (IP) on cerium (Ce) uptake and translocation by rice after CeO2 nanoparticles (NPs) exposure over a 4 days period. A hydroponic experiment was performed under two IP levels (low and high) combined with two CeO2 NPs size (14 nm
Effect of cerium oxide nanoparticles on the quality of rice ( Oryza sativa L.) grains.
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Despite 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
Integration of cerium chemical forms and subcellular distribution to understand cerium tolerance mechanism in the rice seedlings.
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Rare earth elements (REEs) accumulate in the soil and ecosystem. Cerium (Ce) is one of the main additives in REE-containing fertilizers. However, little information is available on Ce distribution patterns and chemical forms in rice. The subcellular distribution and chemical forms of Ce were
Cerium enhances germination and shoot growth, and alters mineral nutrient concentration in rice.
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Cerium (Ce) belongs to the rare earth elements (REEs), and although it is not essential for plants, it can stimulate growth and other physiological processes. The objective of this research was to evaluate the effect of Ce on seed germination, initial seedling growth, and vegetative growth in rice
Cerium oxide nanoparticles modify the antioxidative stress enzyme activities and macromolecule composition in rice seedlings.
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Cerium oxide nanoparticles (nCeO2) have been shown to have significant interactions in plants; however, there are limited reports on their impacts in rice (Oryza sativa). Given the widespread environmental dispersal of nCeO2, it is paramount to understand its biochemical and molecular impacts on a
Elucidating the Effects of Cerium Oxide Nanoparticles and Zinc Oxide Nanoparticles on Arsenic Uptake and Speciation in Rice ( Oryza sativa) in a Hydroponic System.
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The accumulation of arsenic (As) in rice grains depends greatly on the redox chemistry in rice rhizosphere. Intentional or accidental introduction of strong oxidizing or reducing agents, such as metallic engineered nanoparticles (ENPs) into the plant-soil ecosystem, can change As speciation and
The effects of cerium on the growth and some antioxidant metabolisms in rice seedlings.
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BACKGROUND
The aims of the present study are to investigate the effects of Ce(3+) on the growth and some antioxidant metabolisms in rice seedlings (Oryza sativa L. cv Shengdao 16).
METHODS
The rice was treated with 0, 0.05, 0.1, 0.5, 1.0, and 1.5 mM Ce(3+), respectively. The growth index of rice was
Effects of cerium oxide on rice seedlings as affected by co-exposure of cadmium and salt.
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Effects of CeO2 NPs (200 mg.L-1) on rice (Oryza sativa L.) alone or co-exposure with cadmium (Cd) and salt (sodium chloride, NaCl) were investigated in hydroponic systems for two weeks. Physiological results show that rice biomass was significantly inhibited when NaCl or
Citric acid enhances Ce uptake and accumulation in rice seedlings exposed to CeO2 nanoparticles and iron plaque attenuates the enhancement.
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To assess the role of citric acid, as a typical low-molecular-weight organic acid from root exudates, on cerium (Ce) uptake, accumulation and translocation in rice seedlings (Oryza sativa L.) exposed to two CeO2 nanoparticles (NPs) (14 nm and 25 nm). A hydroponic experiment was performed
Assessment of the Phytotoxicity of Metal Oxide Nanoparticles on Two Crop Plants, Maize (Zea mays L.) and Rice (Oryza sativa L.).
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In this study, the phytotoxicity of seven metal oxide nanoparticles(NPs)-titanium dioxide (nTiO₂), silicon dioxide (nSiO₂), cerium dioxide (nCeO₂), magnetite (nFe₃O₄), aluminum oxide (nAl₂O₃), zinc oxide (nZnO) and copper oxide (nCuO)-was assessed on two agriculturally significant crop plants (maize
Effect of Ce(III) on heat production of mitochondria isolated from hybrid rice.
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The effect of cerium on mitochondria isolated from hybrid rice Shanyou 63 (Oryza sativa L) was investigated. Through in vivo culture, low dose Ce3+ promoted, but higher dose Ce3+, restrained mitochondrial heat production. However, through vitro incubation, Ce3+ showed only inhibitory action on
Anoxic stress leads to hydrogen peroxide formation in plant cells.
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Hydrogen peroxide (H2O2) was detected cytochemically in plant tissues during anoxia and re-oxygenation by transmission electron microscopy using its reaction with cerium chloride to produce electron dense precipitates of cerium perhydroxides. Anoxia-tolerant yellow flag iris (Iris pseudacorus) and
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