Assessing the uptake of selenium from naturally enriched soils by maize (Zea mays L.) using diffusive gradients in thin-films technique (DGT) and traditional extractions

Wang, Mengke; Cui, Zewei; Xue, Mingyue; Peng, Qin; Zhou, Fei; Wang, Dan; Dinh, Quang Toan; Liu, Yongxian; Liang, Dongli

doi:10.1016/j.scitotenv.2019.06.346

Cited by 43 publications

(12 citation statements)

References 52 publications

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“…The diffusive gradients in thin‐films (DGT) technique and the traditional chemical extraction methods, including seven single‐step extraction procedures and a five‐step sequential extraction helped in detection of bioaccumulation of Se in Maize plant ( Zea mays L.) About 50% of total Se was found in the form of residual Se, followed by organic‐bound and Fe‐Mn oxide‐bound Se fractions in soil. In addition, Se 6+ , Se 4+ , and Se 2− were also detected in the solution which was extracted by H 2 O, KCl, phosphate buffered solution (PBS), NaHCO 3 , ethylene diamine tetra acetic acid‐2Na (EDTA‐2Na), and ammonium bicarbonate–diethylene triamine penta acetic acid (AB‐DTPA) (Wang et al, 2019).…”

Section: Selenium: Uptake Transport Accumulation and Metabolism Inmentioning

confidence: 99%

“…Wang et al (2019) employed various methods to determine the bioavailability of Se in Zea mays . The diffusive gradients in thin‐films (DGT) technique and the traditional chemical extraction methods, including seven single‐step extraction procedures and a five‐step sequential extraction helped in detection of bioaccumulation of Se in Maize plant ( Zea mays L.) About 50% of total Se was found in the form of residual Se, followed by organic‐bound and Fe‐Mn oxide‐bound Se fractions in soil.…”

Section: Selenium: Uptake Transport Accumulation and Metabolism In Plantsmentioning

confidence: 99%

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Exploring the new dimensions of selenium research to understand the underlying mechanism of its uptake, translocation, and accumulation

Raina

Sharma

Nazir

et al. 2020

Physiologia Plantarum

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Selenium (Se) is a vital mineral for both plants and animals. It is widely distributed on the earth's crust and is taken up by the plants as selenite or selenate. Plants substantially vary in their physiological response to Se. The amount of Se in edible plants is genetically controlled. Its availability can be determined by measuring its phytoavailability in soil. The low concentration of Se in plants can help them in combating stress, whereas higher concentrations can be detrimental to plant health and in most cases it is toxic. Thus, solving the double‐edged sword problem of nutritional Se deficiency and its elevated concentrations in environment requires a better understanding of Se uptake and metabolism in plants. The studies on Se uptake and metabolism can help in genetic biofortification of Se in plants and also assist in phytoremediation. Moreover, Se uptake and transport, especially biochemical pathways of assimilation and incorporation into proteins, offers striking mechanisms of toxicity and tolerance. These developments have led to a revival of Se research in higher plants with significant break throughs being made in the previous years. This review explores the new dimensions of Se research with major emphasis on key research events related to Se undertaken in last few years. Further, we also discussed future possibilities in Se research for crop improvement.

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Section: Selenium: Uptake Transport Accumulation and Metabolism Inmentioning

confidence: 99%

Section: Selenium: Uptake Transport Accumulation and Metabolism In Plantsmentioning

confidence: 99%

Exploring the new dimensions of selenium research to understand the underlying mechanism of its uptake, translocation, and accumulation

Raina

Sharma

Nazir

et al. 2020

Physiologia Plantarum

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“…There are five valence states of Se (i.e., Se 6+ , Se 4+ , Se 2+ , Se 0 , and Se 2– ); those that can be absorbed by plants are selenites (SeO 3 2– ) and selenates (SeO 4 2– ). Selenates and selenites are the two most widely used forms of inorganic Se ( Li et al, 2008 ; Wang et al, 2019 ). The absorbed inorganic forms must be converted into organic forms such as selenocysteine (SeCys) before they can be further utilized by plants ( Van Hoewyk, 2013 ).…”

Section: Introductionmentioning

confidence: 99%

Transcriptomic Characterization of the Effects of Selenium on Maize Seedling Growth

et al. 2021

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Selenium (Se) is a trace mineral element in soils that can be beneficial to plants in small amounts. Although maize is among the most economically important crops, there are few reports on the effects of Se on maize seedling growth at the molecular level. In this study, the growth of maize seedlings treated with different concentrations of Na2SeO3 was investigated, and the physiological characteristics were measured. Compared with the control, a low Se concentration promoted seedling growth, whereas a high Se concentration inhibited it. To illustrate the transcriptional effects of Se on maize seedling growth, samples from control plants and those treated with low or high concentrations of Se were subjected to RNA sequencing. The differentially expressed gene (DEG) analysis revealed that there were 239 upregulated and 106 downregulated genes in the low Se treatment groups, while there were 845 upregulated and 1,686 downregulated DEGs in the high Se treatment groups. Both the Gene Ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG) annotation analyses showed a low concentration of the Se-stimulated expression of “DNA replication” and “glutathione (GSH) metabolism”-related genes. A high concentration of Se repressed the expression of auxin signal transduction and lignin biosynthesis-related genes. The real-time quantitative reverse transcription PCR (qRT-PCR) results showed that in the low Se treatment, “auxin signal transduction,” “DNA replication,” and lignin biosynthesis-related genes were upregulated 1.4- to 57.68-fold compared to the control, while, in the high Se concentration treatment, auxin signal transduction and lignin biosynthesis-related genes were downregulated 1.6- to 16.23-fold compared to the control. Based on these transcriptional differences and qRT-PCR validation, it was found that a low dosage of Se may promote maize seedling growth but becomes inhibitory to growth at higher concentrations. This study lays a foundation for the mechanisms underlying the effects of Se on maize seedling growth.

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“…14 A concentration range of 0.51−27.64 μg Se/L in the soil solution was reported in Middle China. 15 Vanadium is also a potentially harmful metal to the environment with public concern. With an estimated average content of 97 mg/kg in the upper Earth crust, 16 vanadium is the most abundant metal(loid) compared to arsenic and selenium.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The two major bioavailable species of Se in the environment are selenate (SeO 4 2– ) and selenite (SeO 3 2– ), either of which can be the dominant species in oxidizing or reducing environments . A concentration range of 0.51–27.64 μg Se/L in the soil solution was reported in Middle China . Vanadium is also a potentially harmful metal to the environment with public concern.…”

Section: Introductionmentioning

confidence: 99%

Effective Modeling Framework for Quantifying the Potential Impacts of Coexisting Anions on the Toxicity of Arsenate, Selenite, and Vanadate

Qiu

et al. 2020

Environ. Sci. Technol.

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Assessing the uptake of selenium from naturally enriched soils by maize (Zea mays L.) using diffusive gradients in thin-films technique (DGT) and traditional extractions

Cited by 43 publications

References 52 publications

Exploring the new dimensions of selenium research to understand the underlying mechanism of its uptake, translocation, and accumulation

Exploring the new dimensions of selenium research to understand the underlying mechanism of its uptake, translocation, and accumulation

Transcriptomic Characterization of the Effects of Selenium on Maize Seedling Growth

Effective Modeling Framework for Quantifying the Potential Impacts of Coexisting Anions on the Toxicity of Arsenate, Selenite, and Vanadate

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