Selenium application alters soil cadmium bioavailability and reduces its accumulation in rice grown in Cd-contaminated soil.
Environ Sci Pollut Res Int. 2018 Nov; 25(31):31175-31182.ES

Abstract

Selenium (Se) alleviates cadmium (Cd) accumulation in several plants. Nevertheless, it is still unclear why it has such effect. Thus, this study aimed to investigate the effects of Se on soil Cd bioavailability, and Cd accumulation in flooded rice plants, and to determine the mechanisms underlying these effects. Concentration of Cd and Se in different rice tissues was determined along Cd and Se concentrations in the soil solution and soil Cd fractions. Results showed that exogenous selenite and selenate treatments significantly increased rice grain Se by 4.25- and 2.39-fold and decreased Cd by 36.5% and 25.3% relative to control treatment, respectively. The addition of Se to Cd-contaminated soil significantly decreased total Cd concentration in the soil solution by 11.2-13.0%, increased soil pH by 0.06-0.32 units, and enhanced soil Cd immobilization in relation to control. Exogenous Se also reduced diethylenetriaminepentaacetic acid-Cd, exchangeable, and residual Cd but increased the levels of Cd bound to carbonate and iron and manganese oxides. Thus, amending Cd-contaminated soil with Se may help decrease Cd content as well as increase Se levels in rice grain, as Se may mitigate Cd accumulation in rice plants by increasing soil pH, reducing Cd bioavailability, and inhibiting Cd translocation from roots to shoots.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Huang Q

Innovation Team of Remediation of Heavy Metal-Contaminated Farmlands, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin, 300191, People's Republic of China. Key Laboratory of Original Environmental Quality of MOA, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin, 300191, People's Republic of China.

Xu Y

Innovation Team of Remediation of Heavy Metal-Contaminated Farmlands, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin, 300191, People's Republic of China. ymxu1999@163.com. Key Laboratory of Original Environmental Quality of MOA, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin, 300191, People's Republic of China. ymxu1999@163.com.

MeSH

Biological AvailabilityCadmiumEdible GrainIronManganese CompoundsOryzaOxidesPlant RootsPlant ShootsSelenic AcidSelenious AcidSeleniumSoilSoil Pollutants

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30187416

Citation

Huang, Qingqing, et al. "Selenium Application Alters Soil Cadmium Bioavailability and Reduces Its Accumulation in Rice Grown in Cd-contaminated Soil." Environmental Science and Pollution Research International, vol. 25, no. 31, 2018, pp. 31175-31182.

Huang Q, Xu Y, Liu Y, et al. Selenium application alters soil cadmium bioavailability and reduces its accumulation in rice grown in Cd-contaminated soil. Environ Sci Pollut Res Int. 2018;25(31):31175-31182.

Huang, Q., Xu, Y., Liu, Y., Qin, X., Huang, R., & Liang, X. (2018). Selenium application alters soil cadmium bioavailability and reduces its accumulation in rice grown in Cd-contaminated soil. Environmental Science and Pollution Research International, 25(31), 31175-31182. https://doi.org/10.1007/s11356-018-3068-x

Huang Q, et al. Selenium Application Alters Soil Cadmium Bioavailability and Reduces Its Accumulation in Rice Grown in Cd-contaminated Soil. Environ Sci Pollut Res Int. 2018;25(31):31175-31182. PubMed PMID: 30187416.

* Article titles in AMA citation format should be in sentence-case

TY - JOUR T1 - Selenium application alters soil cadmium bioavailability and reduces its accumulation in rice grown in Cd-contaminated soil. AU - Huang,Qingqing, AU - Xu,Yingming, AU - Liu,Yiyun, AU - Qin,Xu, AU - Huang,Rong, AU - Liang,Xuefeng, Y1 - 2018/09/05/ PY - 2018/05/05/received PY - 2018/08/27/accepted PY - 2018/9/7/pubmed PY - 2019/1/10/medline PY - 2018/9/7/entrez KW - Accumulation KW - Bioavailability KW - Cadmium KW - Rice KW - Selenium KW - Soil SP - 31175 EP - 31182 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 25 IS - 31 N2 - Selenium (Se) alleviates cadmium (Cd) accumulation in several plants. Nevertheless, it is still unclear why it has such effect. Thus, this study aimed to investigate the effects of Se on soil Cd bioavailability, and Cd accumulation in flooded rice plants, and to determine the mechanisms underlying these effects. Concentration of Cd and Se in different rice tissues was determined along Cd and Se concentrations in the soil solution and soil Cd fractions. Results showed that exogenous selenite and selenate treatments significantly increased rice grain Se by 4.25- and 2.39-fold and decreased Cd by 36.5% and 25.3% relative to control treatment, respectively. The addition of Se to Cd-contaminated soil significantly decreased total Cd concentration in the soil solution by 11.2-13.0%, increased soil pH by 0.06-0.32 units, and enhanced soil Cd immobilization in relation to control. Exogenous Se also reduced diethylenetriaminepentaacetic acid-Cd, exchangeable, and residual Cd but increased the levels of Cd bound to carbonate and iron and manganese oxides. Thus, amending Cd-contaminated soil with Se may help decrease Cd content as well as increase Se levels in rice grain, as Se may mitigate Cd accumulation in rice plants by increasing soil pH, reducing Cd bioavailability, and inhibiting Cd translocation from roots to shoots. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/30187416/Selenium_application_alters_soil_cadmium_bioavailability_and_reduces_its_accumulation_in_rice_grown_in_Cd_contaminated_soil_ DB - PRIME DP - Unbound Medicine ER -

Tags

Selenium application alters soil cadmium bioavailability and reduces its accumulation in rice grown in Cd-contaminated soil.Environ Sci Pollut Res Int. 2018 Nov; 25(31):31175-31182.ES