Selenato e selenito na produção, nutrição mineral e biofortificação com selênio em cultivares de alface¹

Ramos, Sílvio Júnio; Faquin, Valdemar; Almeida, Hilário Júnior de; Ávila, Fabrício William; Guilherme, Luiz Roberto Guimarães; Bastos, Carla Elisa Alves; Avila, P.

doi:10.1590/s0100-06832011000400029

Cited by 16 publications

(11 citation statements)

References 34 publications

(38 reference statements)

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“…Again, these results for Ca and Mg differ somewhat from those reported by Ríos et al, 25 but agree with Hawrylak-Nowak, 18 Ramos et al 23 and Wu and Huang. 51 On the other hand no information is available about the effect of Se application for Na accumulation in plants.…”

Section: Minerals Accumulation Pca and Theoretical Calculationssupporting

confidence: 67%

“…24,26,27 It has been reported that selenate and sulfate have an antagonistic relationship, because Se metabolism follows the same pattern as S due to the chemical similarity of these two atoms, and the presence of Se can provoke a decline in the S concentration in the plant. 28,29 However, other researchers 18,[23][24][25] suggested that there is a synergism between Se and S, resulting in an accumulation of S and Se in lettuce, as has already been observed before by Mikkelsen and Wan, 30 Pilon-Smits et al 29 and Lyons et al…”

Section: Introductionmentioning

confidence: 79%

“…[23][24][25] Sulfur is an essential element to the plant, serving as constituent of proteins and nucleic acids. 24,26,27 It has been reported that selenate and sulfate have an antagonistic relationship, because Se metabolism follows the same pattern as S due to the chemical similarity of these two atoms, and the presence of Se can provoke a decline in the S concentration in the plant.…”

Section: Introductionmentioning

confidence: 99%

“…23,25,32 Thus, an adequate nutritional balance of plants can provide information on the functional state of a plant under different growth conditions. Because of the differences observed in the relationships between Se and essential elements in different lettuces, it is important to use adequate statistic tools to compare all elements and treatments in the same time, as well as to include theoretical calculation in this type of work to elucidate the process occurring during biofortification assays.…”

mentioning

confidence: 99%

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Effect of Selenite and Selenate Application on Mineral Composition of Lettuce Plants Cultivated Under Hydroponic Conditions: Nutritional Balance Overview Using a Multifaceted Study

Silva¹,

Cidade²,

Heerdt³

et al. 2017

J. Braz. Chem. Soc.

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The effect of selenate and selenite enrichment on mineral composition of a red type of lettuce cv. "Veneza roxa" was evaluated using inductively coupled plasma-optical emission spectroscopy (ICP OES), molecular modeling and principal component analysis (PCA). Both Se species did not show toxicity, while selenate promoted the greatest Se accumulation by the plant. There was an increase of 886 µg of Se per 100 g of fresh sample at different concentrations of selenate, but for selenite the maximum variation was only of 114 µg per 100 g. Selenate promoted the absorption of Mo and S and the reduction of K, Mn and P, meanwhile selenite increased Mn and decreased Mo accumulation. Copper and Fe absorption was negatively affected, Ca and Mg showed a slight increase, and Na and Zn were not affected by Se species. Despite the changes in the nutritional balance, Se-enriched lettuce can still be considered a potential dietary source of this essential element.

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Section: Minerals Accumulation Pca and Theoretical Calculationssupporting

confidence: 67%

Section: Introductionmentioning

confidence: 79%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Effect of Selenite and Selenate Application on Mineral Composition of Lettuce Plants Cultivated Under Hydroponic Conditions: Nutritional Balance Overview Using a Multifaceted Study

Silva¹,

Cidade²,

Heerdt³

et al. 2017

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

show abstract

“…Many studies of biofortification have been carried out aiming to improve the Se content in plant foods. Ramos et al (2011) studied the biofortification of five lettuce cultivars with selenate and selenite. Funes-Collado, Morell-Garcia, Rubio, and López-Sánchez (2013) studied the biofortification of selenite and selenate in alfalfa sprouts, lentils, and soybeans that were hydroponically grown, as well as the Se speciation in plants.…”

Section: Introductionmentioning

confidence: 99%

Bioavailability Assessment of Copper, Iron, Manganese, Molybdenum, Selenium, and Zinc from Selenium‐Enriched Lettuce

Silva

Cadore

2019

Journal of Food Science

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Cu, Fe, Mn, Mo, Selenium (Se), and Zn bioavailability from selenate‐ and selenite‐enriched lettuce plants was studied by in vitro gastrointestinal digestion followed by an assay with Caco‐2 cells. The plants were cultivated in the absence and presence of two concentrations (25 and 40 µmol/L of Se). After 28 days of cultivation, the plants were harvested, dried, and evaluated regarding the total concentration, bioaccessibility, and bioavailability of the analytes. The results showed that biofortification with selenate leads to higher Se absorption by the plant than biofortification with selenite. For the other nutrients, Mo showed high accumulation in the plants of selenate assays, and the presence of any Se species led to a reduction of the plant uptake of Cu and Fe. The accumulation of Zn and Mn was not strongly influenced by the presence of any Se species. The bioaccessibility values were approximately 71%, 10%, 52%, 84%, 71%, and 86% for Cu, Fe, Mn, Mo, Se, and Zn, respectively, and the contribution of the biofortified lettuce to the ingestion of these minerals is very small (except for Se and Mo). Due to the low concentrations of elements from digested plants, it was not possible to estimate the bioavailability for some elements, and for Mo and Zn, the values are below 6.9% and 3.4% of the total concentration, respectively. For Se, the bioavailability was greater for selenite‐enriched than selenate‐enriched plants (22% and 6.0%, respectively), because selenite is biotransformed by the plant to organic forms that are better assimilated by the cells.

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The dual effects of two inorganic selenium forms on the growth, selected physiological parameters and macronutrients accumulation in cucumber plants

2015

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The boundary between beneficial and phytotoxic levels of selenium (Se) is narrow, and both induce alteration in plant growth and their physiology. In this study, the influence of two Se forms (selenite or selenate) with different concentrations (2-80 lM) on cucumber plants was investigated. The toxicity threshold for selenate and selenite was determined at the concentrations of 80 and 20 lM, respectively. In the Se-exposed plants, the growthpromoting effect was found at 6 lM of selenite and at 6-20 lM of selenate. The root activity considerably increased with increasing selenite concentrations suggesting the upregulation of mitochondrial dehydrogenases activity. Selenite treatment also impaired photosynthetic pigments accumulation and chlorophyll fluorescence parameters. Moreover, Se exerted a dual effect on lipid peroxidation in roots: at low concentrations it inhibited this process, whereas at high concentrations it enhanced the accumulation of harmful lipid peroxides. Under low Se concentrations (\10 lM), the accumulation of Se in shoots was similar in the presence of selenate and selenite. When Se concentration was [10 lM, the accumulation of Se in shoots was greater in selenate-exposed than seleniteexposed plants. However, in the roots the Se concentrations were always higher after selenite exposure comparing to selenate. The N level in plants was generally maintained constant, while the remaining macronutrients (especially K, P, and S) concentrations were significantly changed depending on the form and concentrations of Se. These results imply that an application of either selenate or selenite at concentrations\10 lM may be potentially used for biofortification of cucumber with Se and changes in plant macronutrient contents are not expected under these conditions.

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Selenato e selenito na produção, nutrição mineral e biofortificação com selênio em cultivares de alface¹

Cited by 16 publications

References 34 publications

Effect of Selenite and Selenate Application on Mineral Composition of Lettuce Plants Cultivated Under Hydroponic Conditions: Nutritional Balance Overview Using a Multifaceted Study

Effect of Selenite and Selenate Application on Mineral Composition of Lettuce Plants Cultivated Under Hydroponic Conditions: Nutritional Balance Overview Using a Multifaceted Study

Bioavailability Assessment of Copper, Iron, Manganese, Molybdenum, Selenium, and Zinc from Selenium‐Enriched Lettuce

The dual effects of two inorganic selenium forms on the growth, selected physiological parameters and macronutrients accumulation in cucumber plants

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