Effects of selenate supplemented fertilisation on the selenium level of cereals — identification and quantification of selenium compounds by HPLC–ICP–MS

Determining the fate of selenium in wheat biofortification: an isotopically labelled field trial study

“…Stadlober et al (2001) conducted a pot trial, in which a range of crops (winter wheat, spring wheat, summer barley, summer rye and durum wheat) were fertilised with Na 2 SeO 4 at a rate equivalent to 56.3 g ha −1…”

Selenium and Its Species Distribution in Above-ground Plant Parts of Selenium Enriched Buckwheat (Fagopyrum esculentum Moench)

“…15 A study of the Se species distribution in onions indicated that Se(VI) is mostly transported by an apoplastic mechanism, inert transport without infiltration into the cell and without transformation to other chemical forms, while more toxic Se(IV) crosses the cell membrane (symplastic transport) and infiltrates into the cell, where it is reduced to less hazardous seleno amino acid forms. 16 An investigation of Se speciation and its content has already been performed on different plants, including bean seeds, 17 buckwheat seeds and leaves, 13,17 buckwheat sprouts, 18 potato tubers, 19 various cereals 20 and others. Se in Se-enriched plants is most often present in the form of SeMet or SeMeSeCys, and in the form with which the plants were treated.…”

Selenium speciation and bioavailability in Dutch agricultural soils: the role of soil organic matter

“…Selenate is very mobile within plant tissue and easily transported from roots into shoots in the form of selenate, and accumulated as selenate in the accumulator plants (Zayed et al, 1998) or converted and accumulated as selenomethionine in non-accumulator plants (Beilstein et al, 1991;Stadlober et al, 2001). Selenite and selenomethionine are converted directly into organic Se (i.e.…”

“…In general, plants tend to accumulate Se mainly in shoots when supplied with selenate and mainly in roots when supplied with selenite or selenomethionine (Zayed et al, 1998). Accumulator plants store Se in the form of non-protein bound Se, such as SeChapter 1 methylselenocysteine, γ-glutamyl-methylselenocysteine, selenocystathionine, selenate and selenite (Pickering et al, 2003;Freeman et al, 2006), whereas nonaccumulator plants store Se in the form of protein bound-Se, such as selenomethionine (Beilstein et al, 1991;Stadlober et al, 2001). The accumulation of non-protein bound-Se allows the accumulator plants to become Se tolerant (Brown and Shrift, 1981).…”

“…The accumulation of non-protein bound-Se allows the accumulator plants to become Se tolerant (Brown and Shrift, 1981). The accumulation of Se in the form of selenomethionine in the non-accumulator plants, such as cereals, increases the bioavailability of Se for human and animal intake because selenomethionine is easily absorbed by small intestine of humans and animals compared to inorganic selenite and selenate (Wanger, 1998;Stadlober et al, 2001;Juniper et al, 2006;Čobanová-Boldiţárová et al, 2008). Selenium in plants can also be converted into methylated compounds, such as dimethylselenide ((CH 3 ) 2 Se), and is lost into atmosphere through volatilization (phyto-volatilization) (Hawkesford and Zhao, 2007).…”