Assessment of bioavailability of selenium in different plant-soil systems by diffusive gradients in thin-films (DGT)

Peng, Qin; Wang, Mengke; Cui, Zewei; Huang, Jie; Chen, Chang-Er; Guo, Lu; Liang, Dong

doi:10.1016/j.envpol.2017.03.036

Cited by 55 publications

(15 citation statements)

References 34 publications

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“…Furthermore, as expected, the BCF of 77 Se VI Fert was greater than that of 77 Se IV Fert (Fig. 4 ) due to greater solubility (Peng et al 2017 ). The other reason for differences in BCF between Se IV and Se VI may lie in the mechanisms governing root uptake from soil and subsequent translocation to aerial parts of the plant.…”

Section: Resultssupporting

confidence: 76%

Fate of selenium in biofortification of wheat on calcareous soil: an isotopic study

Shariati

Bailey

Arshad

et al. 2021

Environ Geochem Health

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Selenium (Se) biofortification of staple cereal crops can improve the Se nutritional status of populations. A field trial employing an enriched stable isotope of Se (77Se) was undertaken over three consecutive cropping seasons in a coarse-textured, calcareous soil in Gilgit-Baltistan, Pakistan. The objectives were to (1) assess the feasibility and efficiency of Se biofortification, (2) determine the fate of residual Se, and (3) assess the consequences for dietary Se intake. Isotopically enriched 77Se (77SeFert) was applied, either as selenate or as selenite, at three levels (0, 10, and 20 g ha−1) to a wheat crop. Residual 77SeFert availability was assessed in subsequent crops of maize and wheat without further 77SeFert addition. Loss of 77SeFert was c.35% by the first (wheat) harvest, for both selenium species, attributable to the practice of flood irrigation and low adsorption capacity of the soil. No 77SeFert was detectable in subsequent maize or wheat crops. The remaining 77SeFert in soil was almost entirely organically bound and diminished with time following a reversible (pseudo-)first-order trend. Thus, repeat applications of Se would be required to adequately biofortify grain each year. In contrast to native soil Se, there was no transfer of 77SeFert to a recalcitrant form. Grain from control plots would provide only 0.5 µg person−1 day−1 of Se. By contrast, a single application of 20 g ha−1 SeVI could provide c. 47 µg person−1 day−1 Se in wheat, sufficient to avoid deficiency when combined with dietary Se intake from other sources (c. 25 µg day−1).

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Section: Resultssupporting

confidence: 76%

Fate of selenium in biofortification of wheat on calcareous soil: an isotopic study

Shariati

Bailey

Arshad

et al. 2021

Environ Geochem Health

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“…Hence, mining effluent represents the initial route of Se introduction into surface water and soil-plant system through acid mine water drainage (Chapman, 2006;Lemly, 2004;Wellen et al, 2015). Therefore, it is crucial to assess the biogeochemical behavior, mobility and bioavailability of Se in surface water, soil and plant environments based on its speciation and fractionation (Peng et al, 2017;Wang et al, 2013). The mobility, fate and the behavior of Se in the soil are affected by its speciation as well as different geochemical processes mainly oxidation-reduction, biomethylation, sorption, precipitation, and complexation.…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

“…Mobility of Se depends not only on the total Se content in the soil but also on its speciation (Peng et al, 2017;Wang et al, 2013). Se speciation in the soil is influenced by soil conditions, which may promote the oxidation, reduction, mineralization or immobilization of Se (Funwie, 2012).…”

Section: Se Speciation Affecting Se Mobilitymentioning

confidence: 99%

“…Besides inorganic forms of Se, organic forms in the soil such as selenomethionine (SeMet), selenocysteine (SeCys) and methylselenocysteine (MeSeCys) may occur (Pyrzynska, 2009). Selenate is more soluble and bioavailable than selenite, which is highly more adsorbed to different soil constituents (Peng et al, 2017;Tolu et al, 2011). However, elemental Se and metal selenides are insoluble and unavailable.…”

Section: Se Speciation Affecting Se Mobilitymentioning

confidence: 99%

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Monitoring and analysis of selenium as an emerging contaminant in mining industry: A critical review

Etteieb

Magdouli

Zolfaghari

et al. 2020

Science of The Total Environment

146

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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“…Plant uptake mechanisms for metals were explored using DGT, with results suggesting that the uptake of Ni by (Raphanus sativus) was controlled by diffusion and plant limiting uptake mechanisms, while the uptake of Cd was mainly controlled by plant limiting uptake mechanisms (Luo et al 2014). Peng et al (2017) further used DGT to prove that the distribution and bioavailability of Se and plant uptake processes were associated with plant species, growth cycles and differences in soil fractions. Song et al (2018b) predicted the level of metal bioaccumulation and bioavailability in river sediments using DGT, and the accuracy of results was verified by comparing the DGT-measured results, to the results of direct sediment analysis and plant sample analysis, respectively.…”

Section: Evaluation Of Bioavailability and Toxicitymentioning

confidence: 99%

Diffusive gradients in thin films: devices, materials and applications

Ding

Yang

et al. 2018

Environ Chem Lett

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Assessment of bioavailability of selenium in different plant-soil systems by diffusive gradients in thin-films (DGT)

Cited by 55 publications

References 34 publications

Fate of selenium in biofortification of wheat on calcareous soil: an isotopic study

Fate of selenium in biofortification of wheat on calcareous soil: an isotopic study

Monitoring and analysis of selenium as an emerging contaminant in mining industry: A critical review

Diffusive gradients in thin films: devices, materials and applications

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