Geochemical characteristics of selenium and its correlation to other elements and minerals in selenium-enriched rocks in Ziyang County, Shaanxi Province, China

Tian, Huan; Ma, Zongyuan; Chen, Xiaolei; Zhang, Hongyu; Bao, Zhengyu; Chen, Wei; Xie, Shuyun; Wu, Shitou

doi:10.1007/s12583-016-0700-x

Cited by 32 publications

(10 citation statements)

References 35 publications

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“…Both Na 2 SeO 4 and Na 2 SeO 3 soil application increased action on transporters, thereby affecting the accumulation of Se in wheat (Wang et al, 2021 ). Ziyang, located in the Daba Mountain area of Southern Shannxi Province, China, is a well-known Se-enriched area, with Se distribution in rocks ranging from 0.23 to 57.0 mg·kg −1 (Tian et al, 2016b ). Crops grown in areas around the Se-rich core are enriched in Se, and Ziyang has become the leading area of the Se industry.…”

Section: Introductionmentioning

confidence: 99%

Selenium Biofortification Modulates Plant Growth, Microelement and Heavy Metal Concentrations, Selenium Uptake, and Accumulation in Black-Grained Wheat

et al. 2021

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In Se-deficient populations, Selenium- (Se-) enriched wheat is a source of Se supplementation, and Se content can be improved by agronomic biofortification. Thus, black-grained wheat (BGW) and white-grained wheat (WGW) (as the control) were grown in Se naturally contained soils at different concentrations (11.02, 2.21, 2.02, and 0.20 mg·kg−1). Then, a field experiment was conducted to assess agronomic performance, the concentration of microelements and heavy metals, and the uptake and distribution of Se in the BGW under the application of Se ore powder. The results showed that the grain yield and grain Se concentration of wheat respectively show a significant increase and decrease from high Se to low Se areas. Higher grain yield and crude protein content were observed in Se-rich areas. The soil application of Se ore powder increased wheat grain yield and its components (biomass, harvest index, grain number, and 1,000 kernels weight). The concentrations of Zn, Fe, Mn, total Se, and organic Se in the grains of wheat were also increased, but Cu concentration was decreased. The concentrations of Pb, As, Hg, and Cr in wheat grains were below the China food regulation limits following the soil application of Se ore powder. Compared with the control, Se ore powder treatment increased the uptake of Se in various parts of wheat plants. More Se accumulation was observed in roots following Se ore powder application, with a smaller amount in grains. In addition, compared with the control, BGW had significantly higher concentrations of Zn, Fe, and Mn and accumulated more Se in grains and shoots and less Se in roots. The results indicate that wheat grown in Se-rich areas increases its grain yield and crude protein content. The soil application of Se ore powder promotes wheat growth and grain yield. Compared with WGW, BGW accumulated more Se in grains and had a higher concentration of organic Se in grains. In conclusion, the application of Se ore powder from Ziyang as Se-enriched fertilizer could be a promising strategy for Se biofortification in the case of wheat, and BGW is the most Se-rich potential genotype.

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Section: Introductionmentioning

confidence: 99%

Selenium Biofortification Modulates Plant Growth, Microelement and Heavy Metal Concentrations, Selenium Uptake, and Accumulation in Black-Grained Wheat

et al. 2021

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“…It has also been previously reported that extHIJKL is not required for electron transfer to Fe(III) oxide and low-potential electrodes [ 30 ]. On the other hand, an intriguing link is suggested between Fe(III) reduction and the biogeochemical cycle of selenium [ 91 ]. In sulfur-rich marine environments, anaerobic bacterial communities are thought to play a key role in the formation of FeS, pyrite (FeS 2 ), and S 0 [ 92 ].…”

Section: Discussionmentioning

confidence: 99%

“…In sulfur-rich marine environments, anaerobic bacterial communities are thought to play a key role in the formation of FeS, pyrite (FeS 2 ), and S 0 [ 92 ]. In such environments, selenium levels are known to correlate positively with the content of pyrite, chlorite, and illite [ 91 ]. Thus, regulation of the selenium metabolic pathway, together with Fe(III) reduction in response to Fe(III), could be of significance in the selenium geochemical cycle.…”

Section: Discussionmentioning

confidence: 99%

Characterization of a Novel Porin-Like Protein, ExtI, from Geobacter sulfurreducens and Its Implication in the Reduction of Selenite and Tellurite

Jahan

Tobe

Mihara

2018

IJMS

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The extI gene in Geobacter sulfurreducens encodes a putative outer membrane channel porin, which resides within a cluster of extHIJKLMNOPQS genes. This cluster is highly conserved across the Geobacteraceae and includes multiple putative c-type cytochromes. In silico analyses of the ExtI sequence, together with Western blot analysis and proteinase protection assays, showed that it is an outer membrane protein. The expression level of ExtI did not respond to changes in osmolality and phosphate starvation. An extI-deficient mutant did not show any significant impact on fumarate or Fe(III) citrate reduction or sensitivity to β-lactam antibiotics, as compared with those of the wild-type strain. However, extI deficiency resulted in a decreased ability to reduce selenite and tellurite. Heme staining analysis revealed that extI deficiency affects certain heme-containing proteins in the outer and inner membranes, which may cause a decrease in the ability to reduce selenite and tellurite. Based on these observations, we discuss possible roles for ExtI in selenite and tellurite reduction in G. sulfurreducens.

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“…It is also noteworthy that the compound pollution of pesticide, heavy metal and polycyclic aromatic hydrocarbons were found in many areas of China (Shen et al, 2005;Sun et al, 2014). Previous studies reported that selenium was associated with some other mineral elements, including arsenic, cadmium and lead (Tian et al, 2016), and these heavy metal elements were classified as heavy metal type I. Other heavy metal elements, which are not associated with mineral elements and may cause heavy metal pollution in local areas, were classified as heavy metal type II.…”

Section: Establishing Hierarchical Structurementioning

confidence: 98%

Comprehensive assessment of regional selenium resources in soils based on the analytic hierarchy process: Assessment system construction and case demonstration

Liang

Shi

et al. 2017

Science of The Total Environment

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Geochemical characteristics of selenium and its correlation to other elements and minerals in selenium-enriched rocks in Ziyang County, Shaanxi Province, China

Cited by 32 publications

References 35 publications

Selenium Biofortification Modulates Plant Growth, Microelement and Heavy Metal Concentrations, Selenium Uptake, and Accumulation in Black-Grained Wheat

Selenium Biofortification Modulates Plant Growth, Microelement and Heavy Metal Concentrations, Selenium Uptake, and Accumulation in Black-Grained Wheat

Characterization of a Novel Porin-Like Protein, ExtI, from Geobacter sulfurreducens and Its Implication in the Reduction of Selenite and Tellurite

Comprehensive assessment of regional selenium resources in soils based on the analytic hierarchy process: Assessment system construction and case demonstration

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