Selenium concentration in wheat grain: Is there sufficient genotypic variation to use in breeding?

Lyons, Graham; Ortiz-Monasterio, Iván; Stangoulis, James; Graham, Robin D.

doi:10.1007/s11104-004-0909-9

Cited by 178 publications

(109 citation statements)

References 31 publications

(35 reference statements)

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“…The soil pH, the microbial activity, the content of organic materials and the soil texture are all important parameters that affect the concentration of available Se in soil (Stroud et al 2010). Lyons et al (2005a) concluded that genotypic differences may exist between varieties, but they are likely too small compared to the variation in available Se concentration in soils. This is in agreement with the data present in Table 2, that variability in Se content depends on year -environmenteffect.…”

Section: Discussionmentioning

confidence: 99%

Micronutrient contents and nutritional values of commercial wheat flours and flours of field-grown wheat varieties — A survey in Hungary

Szira¹,

Monostori²,

Galiba³

et al. 2014

Cereal Research Communications

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Wheat-based food has great importance in human nutrition: in European countries they provide 20-30% of the daily calorie intake, and additionally, the wholemeal and healthy food becomes even more popular. Mineral content in grains is dependent on genetic and environmental factors (varieties, soil type, geographical location of the growing area, etc.), therefore, it is complicated to estimate how many percentage of the daily micronutrient requirements can be covered by wheat-based products. In this study, copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), selenium (Se) and zinc (Zn) contents of 13 commercial wheat flour products, and the white flour and wholemeal of 24 winter type bread wheat varieties were studied to estimate the nutritional value of these products. All investigated samples were produced in Hungary. Significant variation was revealed in the case of all mineral elements in the different brands of wheat flours. Generally, the white flour enriched with germ showed higher mineral contents than the average values of normal white flours. Furthermore, the wholemeal has higher Cu, Fe, Mn and Zn, but not higher Se contents than the white flours. Mo content was also higher in some brands of white flour than in wholemeal.The investigated winter wheat varieties showed significant differences in the case of Fe, Mn, Se and Zn contents, but none of the varieties showed outstandingly high micronutrient content. The milling process -as it was expected -reduces the concentrations of four elements (Fe 33%; Mn 88%; Zn 71%; Cu 44%); however, the Se and Mo concentrations were not affected significantly. Using the average micronutrient content in the wholemeal of varieties, the daily Mn and Fe requirement can be covered by the consumption of about 250 g wholemeal. Additionally, the daily Mo requirement could be met by the daily consumption of 140-190 g of commercial white or wholemeal flour.

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Section: Discussionmentioning

confidence: 99%

Micronutrient contents and nutritional values of commercial wheat flours and flours of field-grown wheat varieties — A survey in Hungary

Szira¹,

Monostori²,

Galiba³

et al. 2014

Cereal Research Communications

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“…However, agricultural crops are sensitive to high concentrations of Se in their tissue, with sensitivity varying among plant species (Lyons et al, 2005), requiring care when establishing doses of Se.…”

Section: Production Of Dry Shoot Mass and Fresh Root Massmentioning

confidence: 99%

Agronomic biofortification of carrot with selenium

et al. 2018

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The selenium (Se) is essential for human metabolism, but a large part of the world's population has deficiency in this element. This can be reversed by the consumption of biofortified foods, given that plants can efficiently act in controlling excessive and/or accidental consumption of an element that can occur in humans through the use of dietary supplements. The objective of this study was to evaluate the effect of different application forms and sources of Se in the growth, production, nutrition, physical-chemical characteristics, content and accumulation of Se in carrots. The experiment was conducted under greenhouse conditions, using pots containing 4 dm 3 of Red-yellow Latosol. A completely randomized design was used in a 2x2x2 factorial scheme (with and without Se application, two sources of Se: selenate and selenite, two forms of application of Se: soil and foliar applications), with five replicates. Foliar application of selenate increased the yield and titratable acidity, reducing root ripening index. Foliar application of selenite increased the content of Se in the shoots and the content of carotenoids in the roots. Both sources of Se (selenate and selenite) and application forms (soil or foliar application) increased their content in the roots. However, the foliar application of selenate was the most effective source and form of application. Therefore, it is possible to increase the contents of Se in the edible part of carrots, favoring the consumption of this element by the population. Index terms:Daucus carota Lam; selenate; selenite; maturation index; carotenoids. RESUMOO selênio (Se) é essencial para o metabolismo humano, porém, grande parte da população mundial apresenta deficiência nesse elemento. Isto pode ser revertido pelo consumo de alimentos biofortificados, uma vez que as plantas podem atuar de forma eficiente no controle do consumo excessivo e / ou acidental de um elemento que pode ocorrer nos seres humanos através do uso de suplementos dietéticos. Objetivou-se com o presente estudo avaliar o efeito de formas de aplicação e fontes de Se no crescimento, produção, nutrição, características físico-químicas, teor e acúmulo de Se na cenoura. O experimento foi desenvolvido em casa de vegetação, utilizando vasos com quatro dm 3 contendo Latossolo Vermelho Amarelo. Adotou-se o delineamento inteiramente casualizado, em fatorial 2 x 2 x 2 (com e sem aplicação do Se; duas fontes do Se: selenato e selenito; duas formas de aplicação do Se: via solo e foliar), com cinco repetições. O selenato aplicado via foliar aumenta a produção e a acidez titulável e reduz o índice de maturação das raízes. O selenito via foliar aumenta o teor de Se na parte aérea e o teor de carotenoides nas raízes de cenoura. As duas fontes de Se (selenato e selenito) e formas de aplicação (via solo ou foliar) promovem aumento do seu teor nas raízes de cenoura, porém o selenato via foliar é a fonte e forma mais efetiva. Dessa forma, é possível aumentar os teores de Se na parte comestível da cenoura e, assim, favorecer a in...

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“…The Se content of wheat can be increased by agronomic biofortification. This involves fertilizing the growing crop with an appropriate inorganic form of the micronutrient, which the plant converts to several organic Se forms, notably Se-met, which are more suitable for human consumption [Lyons et al, 2003[Lyons et al, , 2005b. The effect of increased consumption of Se via Se-biofortified wheat on genome damage and immune function has not been tested previously.…”

Section: Introductionmentioning

confidence: 99%

Increased consumption of wheat biofortified with selenium does not modify biomarkers of cancer risk, oxidative stress, or immune function in healthy Australian males

Salisbury

Graham

et al. 2009

Environ and Mol Mutagen

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Increased intake of selenium (Se) may reduce the risk of degenerative diseases including cancer but excessive intake may be toxic. Wheat is a major source of dietary Se in humans. However, the effect of Se from wheat that is agronomically biofortified with Se on biomarkers of human health status is unknown. This study aimed to investigate whether improving Se status, by increased dietary intake of Se‐biofortified wheat, affects biomarkers of cancer risk, cardiovascular disease risk, oxidative stress, and immune function in healthy South Australian men. A 24‐week placebo‐controlled double‐blind intervention was performed in healthy older men (n = 62), with increased dose of Se intake every 8 weeks. Wheat was provided as 1, 2, and 3 puffed wheat biscuits, during weeks 1–8, 9–16, and 17–24, respectively. Blood was collected to measure a wide range of disease risk biomarkers. Consumption of Se‐biofortified wheat was found to increase plasma Se concentration from a baseline level of 122 to 192 μg/L following intake of three biscuits/day, which provided 267 μg Se. Platelet glutathione peroxidase, chromosome aberrations, and DNA damage in lymphocytes measured using the cytokinesis‐block micronucleus cytome assay and with the Comet assay, plasma F2‐isoprostanes, protein carbonyls, plasma C‐reactive protein, and leukocyte number were unaffected by the improved Se status. Improvement of Se status by consumption of Se‐biofortified wheat did not substantially modify the selected biomarkers of degenerative disease risk and health status in this apparently selenium‐replete cohort of healthy older men in South Australia. Environ. Mol. Mutagen. 2009. © 2009 Wiley‐Liss, Inc.

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Selenium concentration in wheat grain: Is there sufficient genotypic variation to use in breeding?

Cited by 178 publications

References 31 publications

Micronutrient contents and nutritional values of commercial wheat flours and flours of field-grown wheat varieties — A survey in Hungary

Micronutrient contents and nutritional values of commercial wheat flours and flours of field-grown wheat varieties — A survey in Hungary

Agronomic biofortification of carrot with selenium

Increased consumption of wheat biofortified with selenium does not modify biomarkers of cancer risk, oxidative stress, or immune function in healthy Australian males

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