Possibility of selenium biofortification of winter wheat grain

Abstract

Selenium (Se) is one of the elements that determine the normal functioning of an organism; it has antioxidant properties and protects the organism against the actions of free radicals and carcinogenic factors. Selenium is an element that fulfils an important physiological function (Kieliszek and Blažejak 2013), but apart from all the elements, selenium has one of the narrowest range between dietary deficiency (< 40 µg/day) and toxic levels (> 400 µg/day) (Fordyce 2007).While there is no evidence of Se need for higher plants, several reports show that when Se added at low concentrations, it exerts beneficial effects on plant growth. Se may act as quasi-essential micronutrient through altering different physiological and biochemical traits; thus, plants vary considerably in their physiological and biochemical response to Se (El-Ramady et al. 2016).During the last decade, studies related with strategies for Se biofortification in food plants for human nutrition have increased significantly because this metalloid is incorporated into human metabolism mainly as a constituent of food plants (Mora et al. 2015). Biofortification is defined as the process of increasing the bioavailable concentrations of essential elements in the edible portions of cultivated plants through agricultural management (fertilization) or genetic improvement (White and Brodlay 2005).Plant-derived foodstuffs, namely cereals, are the major dietary sources of Se in most countries throughout the world, even if Se contents are strongly dependent upon the corresponding levels in cereal-growing soils. Therefore, wheat is one of the staple crops that appears as an obvious candidate for Se biofortification, considering its Possibility of selenium biofortification of winter wheat grain

Selenium uptake and fruit quality of pear (Pyrus communis L.) treated with foliar Se application

“…Similarly, our earlier rice field trials showed that the Se concentration in brown rice was approximately two times higher in the Se(VI) treatment than in the Se(IV) treatment ( Deng et al., ). In wheat, the recovery efficiency of Se(IV) and Se(VI) in grains were 1.4–1.5% and 13.2–15.1% of the applied Se, respectively ( Ducsay et al., ). And in carrots, Kápolna et al.…”

“…Similarly, our earlier rice field trials showed that the Se concentration in brown rice was approximately two times higher in the Se(VI) treatment than in the Se(IV) treatment . In wheat, the recovery efficiency of Se(IV) and Se(VI) in grains were 1.4-1.5% and 13.2-15.1% of the applied Se, respectively (Ducsay et al, 2016). And in carrots, Ká polna et al (2009) showed that after foliar spraying with Se, the Se concentration in leaves was 60% higher in the Se(VI) compared to the Se(IV) treatment.…”

Effects of a foliar spray of selenite or selenate at different growth stages on selenium distribution and quality of blueberries

“…Studies also showed that selenate usually has higher bioavailability than selenite in grain crops or vegetables. Ducsay et al . found that the Se recovery was approximately ten‐fold higher for selenate spray than selenite spray in wheat grains.…”

“…Studies also showed that selenate usually has higher bioavailability than selenite in grain crops or vegetables. Ducsay et al 24 found that the Se recovery was approximately ten-fold higher for selenate spray than selenite spray in wheat grains. Kápolna et al 5 reported that the Se concentration in carrot leaves treated with selenate was approximately 16-fold higher than that treated with selenite.…”

Is Strip Cropping an Effective Way for Maize Biofortyfication?

“…An alternative complimentary solution to mineral malnutrition is "biofortification." Biofortification has been defined as the process of increasing the bioavailable concentrations of essential elements in edible portions of crop plants through agronomic intervention or genetic selection [3][4][5]. e concept of biofortification is attractive not only for improving the growing conditions of crops but also for exploiting a plant's potential for nutrient mobilization and utilization.…”