Selenium Application Timing: Influence in Wheat Grain and Flour Selenium Accumulation Under Mediterranean Conditions

Rodrigo, Sara; Santamaría, O.; Poblaciones, M. J.

doi:10.5539/jas.v6n3p23

Cited by 17 publications

(14 citation statements)

References 23 publications

(29 reference statements)

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“…A significant and positive correlation between grain Se concentration and the amount of precipitation during the growing season have been already indicated (Johnson, 1991). This result was in line with the general recommendation (application at GS-45 stage, at boots just swollen) given for humid regions (Rodrigo et al, 2014). Other authors have reported a better Se accumulation when Se was applied at flowering stage (Curtin et al, 2006) or even at grain filling (Chu et al, 2013) in humid regions or in irrigated crops.…”

Section: Higher Translocation Of Se From Roots To Shoots and From Shosupporting

confidence: 84%

Methods of Selenium Application Differentially Modulate Plant Growth, Selenium Accumulation and Speciation, Protein, Anthocyanins and Concentrations of Mineral Elements in Purple-Grained Wheat

et al. 2020

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Selenium (Se) is an essential micronutrient for human health. Deficiency and suboptimality of Se in human populations are a potential health risk. The reduction of such health risk by biofortification of crops, particularly in wheat has drawn much attention, especially for color-grained wheat as it is rich in anthocyanins and can be used as a major source of antioxidants in diet. Herein, a two-year field study on the purple-grained wheat cultivar (202w17) and common wheat cultivar (Shannong 129) was conducted with soil application (SeS) and foliar spray (SeF) of selenium. Results showed that the SeS increased shoot dry weight and grain yield. Both SeS and SeF enhanced the concentration of organic Se, but the higher concentration of organic Se in the grain of two cultivars was observed in SeF in comparison with SeS. The concentration of organic Se in the grain of 202w17 treated with SeF was approximately 1.5-fold of that in Shannong 129 with SeF. The analysis of Se accumulation in different parts of the plant revealed that 202w17 accumulated more Se in shoots and grain than Shannong 129, and 202w17 had also higher levels of total protein, total free amino acids and anthocyanin in grain than Shannong 129. In addition, SeF significantly increased the concentrations of zinc (Zn), calcium (Ca), magnesium (Mg) in both cultivars, but decreased the concentration of chromium (Cr), cadmium (Cd) and lead (Pd), which phenomenon was more significant in 202w17. Our results indicate that SeS increases plant growth, leading to higher grain yield in two cultivars tested. The purple-grained wheat (202w17) could accumulate more Se in grain and have a higher concentration of orgainic Se in grain than the common wheat (Shannong 129).

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Section: Higher Translocation Of Se From Roots To Shoots and From Shosupporting

confidence: 84%

Methods of Selenium Application Differentially Modulate Plant Growth, Selenium Accumulation and Speciation, Protein, Anthocyanins and Concentrations of Mineral Elements in Purple-Grained Wheat

et al. 2020

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“…Selenium concentration in many soils all over the world, although very variable, can be considered low, ranging between 10 and 2000 μg kg −1 , with an average value of 400 μg kg −1 (Arthur 2003). In the southwestern Iberian Peninsula, several studies have established values of Se in soils of about 140 μg total Se kg −1 and 12 μg extractable Se kg −1 (Poblaciones et al 2014;Rodrigo et al 2014). These levels can be considered deficient to marginal according to the classification given by Dinh et al (2018).…”

Section: Introductionmentioning

confidence: 99%

Biofortification of Forage Peas with Combined Application of Selenium and Zinc Under Mediterranean Conditions

Reynolds-Marzal

Rivera-Martin

Rodrigo

et al. 2020

J Soil Sci Plant Nutr

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Agronomic biofortification can be used to alleviate the deficient intake of selenium (Se) and zinc (Zn) by livestock. These two essential micronutrients for human and animals play an important role in many physiological functions and biological processes. The aim of the present study was to evaluate the suitability of forage peas, crop with an increasing importance as plant protein source, to be biofortified with a combined treatment of Zn (as ZnSO 4-7H 2 O) and Se (as Na 2 SeO 4). A 2-year field experiment was established in southern Spain under semiarid Mediterranean conditions, by following a split-split-plot design. The study year (2017/2018, 2018/2019) was considered the main-plot factor, soil Zn application (50 kg Zn ha −1 , nil Zn) as a subplot factor, and foliar application (nil, 10 g Se ha −1 , 8 kg Zn ha −1 , 10 g Se ha −1 + 8 kg Zn ha −1) as a sub-subplot factor. The combined application of 50-kg soil Zn ha −1 and the foliar application of 10 g Se ha −1 + 8 kg Zn ha −1 was the most effective treatment to increase the concentration in forage of Zn and Se, 4-fold and 5-fold, respectively, as well as the Zn bioavailability, forage yield (close to 30%), and crude protein (~8%). Thus, forage peas could be considered a very suitable crop to be included in biofortification programs under Mediterranean conditions with Zn and Se as target minerals.

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“…Numerous studies have shown that foliar Se application is more efficient than soil amendment due to lower fertilizer doses and leaching losses from and Se fixation in the soil ( Tveitnes et al., ). Selenate is more available for immediate uptake than selenite ( Stroud et al., ; Poblaciones et al., ; ; ; Rodrigo et al., ); foliar Se application after flowering ( i.e ., in the reproductive stage) is the most efficient way to increase grain Se concentration ( Chu et al., ; Rodrigo et al., ).…”

Section: Introductionmentioning

confidence: 99%

The effect of processing on Pisum sativum L. biofortified with sodium selenate

Poblaciones

Rengel

2018

J. Plant Nutr. Soil Sci.

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Biofortification of edible grains with selenium (Se) is widely practiced, but there is little information regarding the effects of grain processing on Se concentration in grain. To evaluate the potential of cooked field peas (Pisum sativum L.) to be used in the Se biofortification programs, foliar Na2SeO4 applications of 0, 0.015, 0.03, 0.045, 0.06, and 0.075% (w/v) were tested. Shoot growth was not influenced by the Se treatments, whereas root growth, nodulation, and 100‐grain weight were increased. There was a strong linear relationship between the Se treatment dose and total Se concentration in both raw and cooked peas. For each percentage‐point increase in the applied Na2SeO4 concentration, the grain Se concentration increased by 177 and 159 μg Se kg−1 DW in raw and cooked peas, respectively. Processing (freezing and cooking) caused a decrease of about 12% in grain Se concentration. Foliar application of 0.06% (w/v) Na2SeO4 could be a good option for biofortifying field peas. The consumption of 100 g of cooked, biofortified field peas would provide ≈ 50% of the 200 μg total Se recommended for human daily intake.

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Selenium Application Timing: Influence in Wheat Grain and Flour Selenium Accumulation Under Mediterranean Conditions

Cited by 17 publications

References 23 publications

Methods of Selenium Application Differentially Modulate Plant Growth, Selenium Accumulation and Speciation, Protein, Anthocyanins and Concentrations of Mineral Elements in Purple-Grained Wheat

Methods of Selenium Application Differentially Modulate Plant Growth, Selenium Accumulation and Speciation, Protein, Anthocyanins and Concentrations of Mineral Elements in Purple-Grained Wheat

Biofortification of Forage Peas with Combined Application of Selenium and Zinc Under Mediterranean Conditions

The effect of processing on Pisum sativum L. biofortified with sodium selenate

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