Journal ArticleDOI
Quality of animal and human life as affected by selenium management of soils and crops
Umesh C. Gupta,Subhas Gupta +1 more
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TLDR
Although there are other methods of overcoming Se deficiency but crop enrichment and consumption of crop products containing Se in organic form is more bio available, human pathology reflects these animal disease states.Abstract:
Nutrient management of soils and crops affects the quality of crops with respect to their selenium (Se) and other mineral composition. A number of world regions are deficient in Se to meet the needs of animals and humans. In general, soils containing less than 0.6 mg Se kg−1 and crops containing less than 0.1 mg kg−1 are considered deficient for animals and humans. Areas receiving sulfur fertilization contain low Se because sulfur interferes with Se uptake by plants. Principal Se responsive diseases in animals can be divided in to four groups: Musculoskeletal (white muscle disease and neonatal weakness), reproductive (retained placentae and abortions), gastrointestinal (diarrhea and ill thrift), and immunologic (immune system deficits). Human pathology reflects these animal disease states. Specific immune, reproductive, neurologic, and cardiac disorders are found in humans deficient in Se. Additionally, certain cancers and chronic diseases appear to be related to Se in the human diet. A higher Se status i...read more
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Journal ArticleDOI
Biofortification of crops with seven mineral elements often lacking in human diets--iron, zinc, copper, calcium, magnesium, selenium and iodine.
TL;DR: In this paper, the authors review aspects of soil science, plant physiology and genetics underpinning crop bio-fortification strategies, as well as agronomic and genetic approaches currently taken to biofortify food crops with the mineral elements most commonly lacking in human diets: iron (Fe), zinc (Zn), copper (Cu), calcium (Ca), magnesium (Mg), iodine (I) and selenium (Se).
Journal ArticleDOI
Interactions between selenium and sulphur nutrition in Arabidopsis thaliana
Philip J. White,Helen C. Bowen,P. Parmaguru,M. Fritz,William P. Spracklen,R. E. Spiby,Mark C. Meacham,Andrew Mead,M. Harriman,Laurence Trueman,B. M. Smith,Brian Thomas,Martin R. Broadley +12 more
TL;DR: The data suggest (i) that Se and S enter Arabidopsis through multiple transport pathways with contrasting sulphate/selenate selectivities, whose activities vary between plants of contrasting nutritional status, (ii) that rhizosphere sulphate inhibits selenate uptake, (iii) thatrhizosphere selenates promotes sulphate uptake and (iv) thatSe toxicity occurs because Se andS compete for a biochemical process, such as assimilation into amino acids of essential proteins.
Journal ArticleDOI
Biofortification of UK food crops with selenium
Martin R. Broadley,Philip J. White,Rosie J. Bryson,Mark C. Meacham,Helen C. Bowen,Sarah E. Johnson,Malcolm J. Hawkesford,Steve P. McGrath,Fang-Jie Zhao,Neil Breward,Miles Harriman,M. Tucker +11 more
TL;DR: The present paper will review the potential for biofortification of UK food crops with Se and suggest that selecting or breeding crop varieties with enhanced Se-accumulation characteristics may be possible in the longer term.
Journal ArticleDOI
Selenium biofortification of high-yielding winter wheat (Triticum aestivum L.) by liquid or granular Se fertilisation
Martin R. Broadley,John Alcock,James Alford,Paul Cartwright,Ian Foot,Susan J. Fairweather-Tait,David J. Hart,Rachel Hurst,Peter Knott,Steve P. McGrath,Mark C. Meacham,Keith Norman,Hugh Mowat,Peter Scott,Jacqueline L. Stroud,Matthew Tovey,M. Tucker,Philip J. White,Scott D. Young,Fang-Jie Zhao +19 more
TL;DR: In this article, the potential for increasing grain Se concentration in a high-yielding UK wheat crop using fertilisers was determined under standard field conditions in two consecutive years at up to 10 sites.
Journal ArticleDOI
Selenium speciation in enriched vegetables
TL;DR: This review gives a brief, critical overview of the studies carried out to characterise selenium species produced by different enriched vegetables, and the use of different extraction and clean-up methodologies will be discussed in conjunction with differentSelenium enrichment procedures.
References
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Journal ArticleDOI
Selenium: Biochemical Role as a Component of Glutathione Peroxidase
TL;DR: When hemolyzates from erythrocytes of selenium-deficient rats were incubated in vitro in the presence of ascorbate or H2O2, added glutathione failed to protect the hemoglobin from oxidative damage.
Journal ArticleDOI
The importance of selenium to human health
TL;DR: Selenium is needed for the proper functioning of the immune system, and appears to be a key nutrient in counteracting the development of virulence and inhibiting HIV progression to AIDS.
The importance of selenium to human health.
TL;DR: The essential trace mineral, selenium, is of fundamental importance to human health as mentioned in this paper, and it is needed for the proper functioning of the immune system, and appears to be a key nutrient in counteracting the development of virulence and inhibiting HIV progression to AIDS.
Journal ArticleDOI
Effects of Selenium Supplementation for Cancer Prevention in Patients With Carcinoma of the Skin: A Randomized Controlled Trial
Larry C. Clark,Gerald F. Combs,Bruce W. Turnbull,Elizabeth H. Slate,Dan K. Chalker,James Chow,Loretta S. Davis,Renee A. Glover,Gloria F. Graham,Earl G. Gross,Arnon Krongrad,Jack L. Lesher,H. Kim Park,Beverly B. Sanders,Cameron L. Smith,J. Richard Taylor +15 more
TL;DR: Results from secondary end-point analyses support the hypothesis that supplemental selenium may reduce the incidence of, and mortality from, carcinomas of several sites and require confirmation in an independent trial of appropriate design before new public health recommendations regarding seenium supplementation can be made.
Journal ArticleDOI
Selenium: Biochemical Role as a Component of Glutathione Peroxidase
TL;DR: When hemolyzates from erythrocytes of selenium-deficient rats were incubated in vitro in the presence of ascorbate or H(2)O(2), added glutathione failed to protect the hemoglobin from oxidative damage.