Effect of cerium on growth, dry matter production, biochemical constituents and enzymatic activities of cowpea plants [Vigna unguiculata (L.) Walp.]

Shyam, Radhe; Aery, N. C.

doi:10.4067/s0718-95162012000100001

Cited by 63 publications

(45 citation statements)

References 22 publications

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“…Although in kidney beans there was a slight decrease in shoot length when grown in OMES, but the variation was not significantly different, compared to control plants. As seen in SM Table S3, the increase in leaf cover area in plants grown in nano-CeO 2 amended LOMS could be attributed to beneficial or growth enhancement effects of Ce ions up to certain concentrations (Weiping et al, 2003;Yuguan et al, 2009;Shyam and Aery, 2012;Thomas et al, 2014). However, the leaf count and cover area in OMES plants was unaffected by nano-CeO 2 exposure, similar to previous findings in soybean, corn, and cucumber plants (Priester et al, 2012;Zhao et al, 2013Zhao et al, , 2015 grown in unenriched soils.…”

Section: Impact Of Nano-ceo 2 On Plant Growthsupporting

confidence: 86%

Soil organic matter influences cerium translocation and physiological processes in kidney bean plants exposed to cerium oxide nanoparticles

Majumdar

Peralta-Videa

Trujillo-Reyes

et al. 2016

Science of The Total Environment

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Soil organic matter plays a major role in determining the fate of the engineered nanomaterials (ENMs) in the soil matrix and effects on the residing plants. In this study, kidney bean plants were grown in soils varying in organic matter content and amended with 0-500mg/kg cerium oxide nanoparticles (nano-CeO2) under greenhouse condition. After 52days of exposure, cerium accumulation in tissues, plant growth and physiological parameters including photosynthetic pigments (chlorophylls and carotenoids), net photosynthesis rate, transpiration rate, and stomatal conductance were recorded. Additionally, catalase and ascorbate peroxidase activities were measured to evaluate oxidative stress in the tissues. The translocation factor of cerium in the nano-CeO2 exposed plants grown in organic matter enriched soil (OMES) was twice as the plants grown in low organic matter soil (LOMS). Although the leaf cover area increased by 65-111% with increasing nano-CeO2 concentration in LOMS, the effect on the physiological processes were inconsequential. In OMES leaves, exposure to 62.5-250mg/kg nano-CeO2 led to an enhancement in the transpiration rate and stomatal conductance, but to a simultaneous decrease in carotenoid contents by 25-28%. Chlorophyll a in the OMES leaves also decreased by 27 and 18% on exposure to 125 and 250mg/kg nano-CeO2. In addition, catalase activity increased in LOMS stems, and ascorbate peroxidase increased in OMES leaves of nano-CeO2 exposed plants, with respect to control. Thus, this study provides clear evidence that the properties of the complex soil matrix play decisive roles in determining the fate, bioavailability, and biological transport of ENMs in the environment.

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Section: Impact Of Nano-ceo 2 On Plant Growthsupporting

confidence: 86%

Soil organic matter influences cerium translocation and physiological processes in kidney bean plants exposed to cerium oxide nanoparticles

Majumdar

Peralta-Videa

Trujillo-Reyes

et al. 2016

Science of The Total Environment

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“…In Vigna unguiculata seedlings, Shyam and Aery [23] indicate that certain low concentrations (0.7-17.8 μM) of cerium nitrate enhanced both the root and shoot growth. López-Moreno et al [8,12] found that root growth was reduced in the soybean (Glycine max), alfalfa, and tomato, but on the contrary, root growth was significantly promoted in cucumber and maize.…”

Section: Effect Of Ceo 2 Particles On Root and Hypocotyl Elongationmentioning

confidence: 97%

Uptake of CeO2 Nanoparticles and Its Effect on Growth of Medicago arborea In Vitro Plantlets

Gómez-Garay

Pintos

Manzanera

et al. 2014

Biol Trace Elem Res

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The present study analyzes some effects of nano-CeO2 particles on the growth of in vitro plantlets of Medicago arborea when the nanoceria was added to the culture medium. Various concentrations of nano-CeO2 and bulk ceric oxide particles in suspension form were introduced to the agar culture medium to compare the effects of nanoceria versus ceric oxide bulk material. Germination rate and shoot dry weight were not affected by the addition of ceric oxide to the culture media. Furthermore, no effects were observed on chlorophyll content (single-photon avalanche diode (SPAD) measurements) due to the presence of either nano- or micro-CeO2 in the culture medium. When low concentrations of nanoceria were added to the medium, the number of trifoliate leaves and the root length increased but the root dry weight decreased. Also the values of maximum photochemical efficiency of PSII (F(v)/F m) showed a significant decrease. Dark-adapted minimum fluorescence (F 0) significantly increased in the presence of 200 mg L(-1) nanoceria and 400 mg L(-1) bulk material. Root tissues were more sensitive to nanoceria than were the shoots at lower concentrations of nanoceria. A stress effect was observed on M. arborea plantlets due to cerium uptake.

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“…It has been reported that REE have a positive effect on water use efficiency by plants due to an increase in the content of proline, an amino acid with a high ability for hydration, which makes the plant more resistant to water stresses [108,110,111]. There are also studies reporting the advantages of increased proline content in the presence of REE, eliminating reactive oxygen species (ROS) and promoting the inhibition of lipid peroxidation [109,112].…”

Section: Water Use Efficiencymentioning

confidence: 99%

Rare Earth Elements in the Soil Environment

et al. 2016

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Rare earth elements (REE) are a homogenous group of 17 chemical elements in the periodic table that are key to many modern industries including chemicals, consumer electronics, clean energy, transportation, health care, aviation, and defense. Moreover, in recent years, they have been used in agriculture. One of the consequences of their worldwide use is the possible increase of their levels in various environmental compartments. This review addresses major topics concerning the study of REE in the soil environment, with special attention to the latest research findings. The main sources of REE to soils, the contents of REE in soils worldwide, and relevant information on the effects of REE to plants were explored. Ecological and human health risk issues related to the presence of REE in soils were also discussed. Although several findings reported positive effects of REE on plant growth, many questions about their biological role remain unanswered. Therefore, studies concerning the actual mechanism of action of these elements on cellular and physiological processes should be further refined. Even more urgent is to unveil their chemical behavior in soils and the ecological and human health risks that might be associated with the widespread use of REE in our modern society.

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Effect of cerium on growth, dry matter production, biochemical constituents and enzymatic activities of cowpea plants [Vigna unguiculata (L.) Walp.]

Cited by 63 publications

References 22 publications

Soil organic matter influences cerium translocation and physiological processes in kidney bean plants exposed to cerium oxide nanoparticles

Soil organic matter influences cerium translocation and physiological processes in kidney bean plants exposed to cerium oxide nanoparticles

Uptake of CeO2 Nanoparticles and Its Effect on Growth of Medicago arborea In Vitro Plantlets

Rare Earth Elements in the Soil Environment

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