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Silicon application improved the yield and nutritional quality while reduced cadmium concentration in rice.
Environ Sci Pollut Res Int. 2020 Jun; 27(16):20370-20379.ES

Abstract

Silicon (Si) is an essential nutrient for rice, but its effects on the yield and quality of rice under heavy metal stress remain uncertain. In this study, two typical paddy soils (acidic and calcareous purple soils) in the western region of Chongqing were selected for field plot experiment, with the purpose of understanding the effects of Si implementation methods on grain yields and cadmium (Cd) uptake, transport, and accumulation in the grain of a hybrid rice (Oryza sativa L, Changliangyou 772). Four treatments were set for the purposes including soil-based Si application, foliar spray of Si alone, foliar spray of selenium (Se)-containing Si fertilizer, and a control without Si application, respectively. The results indicated that the Si applications reduced Cd contents in brown rice by 11.45~51.85% in the slightly Cd-contaminated acidic purple soil (pH = 4.77, soil total Cd content 0.413 mg kg-1) and 26.93~43.77% in the purple calcareous paddy soil (pH = 7.77) with similar Cd-polluting levels. It is worth noting that the Cd content of conventional fertilized rice exceeds the Chinese National Food Safety Standard limit (0.2 mg kg-1, GB2762-2017) in the slightly Cd-contaminated acidic purple soil, and foliar spray treatments showed most effective effects that meets the safety threshold standard. Soil-based Si application reduced Cd accumulation in rice grains mainly by inhibiting the translocation of Cd from stem to the rice grain or root to stem, while foliar sprays of Si mainly by inhibiting the translocation of Cd from stem to brown rice. Si applications increased the rice yield by 17.15 to 25.45% in calcareous paddy soil with foliar spray being the best, while no significant yield increase was found in acidic paddy soil. Si and Se-containing Si fertilizer improved the nutritional quality of rice grain as indicated by the increases of Se, Si, and protein contents and the significant decreases of Cd contents in the rice grains. The comprehensive effects in improving the rice quality follow the order of foliar spray of Se-containing Si fertilizer > foliar spray of Si alone > soil-based Si application. Thus, foliar spray Si-containing fertilizer could be helpful in increasing rice yield while reducing the Cd uptake in rice grains, which might be a feasible approach in controlling Cd entry into the human body via crops.

Authors+Show Affiliations

College of Resources and Environmental Sciences, Southwest University, Chongqing, 400715, People's Republic of China. Chongqing Key Laboratory of Agricultural Resources and Environment, Chongqing, 400715, China.College of Resources and Environmental Sciences, Southwest University, Chongqing, 400715, People's Republic of China. Chongqing Key Laboratory of Agricultural Resources and Environment, Chongqing, 400715, China.College of Resources and Environmental Sciences, Southwest University, Chongqing, 400715, People's Republic of China. Chongqing Key Laboratory of Agricultural Resources and Environment, Chongqing, 400715, China.College of Resources and Environmental Sciences, Southwest University, Chongqing, 400715, People's Republic of China. Chongqing Key Laboratory of Agricultural Resources and Environment, Chongqing, 400715, China.College of Resources and Environmental Sciences, Southwest University, Chongqing, 400715, People's Republic of China. sqwei@swu.edu.cn. Chongqing Key Laboratory of Agricultural Resources and Environment, Chongqing, 400715, China. sqwei@swu.edu.cn. State Cultivation Base of Eco-agriculture for Southwest Mountainous Land, Southwest University, Chongqing, 400715, China. sqwei@swu.edu.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32240508

Citation

Li, Na, et al. "Silicon Application Improved the Yield and Nutritional Quality While Reduced Cadmium Concentration in Rice." Environmental Science and Pollution Research International, vol. 27, no. 16, 2020, pp. 20370-20379.
Li N, Feng A, Liu N, et al. Silicon application improved the yield and nutritional quality while reduced cadmium concentration in rice. Environ Sci Pollut Res Int. 2020;27(16):20370-20379.
Li, N., Feng, A., Liu, N., Jiang, Z., & Wei, S. (2020). Silicon application improved the yield and nutritional quality while reduced cadmium concentration in rice. Environmental Science and Pollution Research International, 27(16), 20370-20379. https://doi.org/10.1007/s11356-020-08357-4
Li N, et al. Silicon Application Improved the Yield and Nutritional Quality While Reduced Cadmium Concentration in Rice. Environ Sci Pollut Res Int. 2020;27(16):20370-20379. PubMed PMID: 32240508.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Silicon application improved the yield and nutritional quality while reduced cadmium concentration in rice. AU - Li,Na, AU - Feng,Aixuan, AU - Liu,Na, AU - Jiang,Zhenmao, AU - Wei,Shiqiang, Y1 - 2020/04/02/ PY - 2019/10/01/received PY - 2020/03/06/accepted PY - 2020/4/3/pubmed PY - 2020/7/11/medline PY - 2020/4/3/entrez KW - Cd accumulation KW - Rice KW - Silicon application KW - Silicon fertilizer SP - 20370 EP - 20379 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 27 IS - 16 N2 - Silicon (Si) is an essential nutrient for rice, but its effects on the yield and quality of rice under heavy metal stress remain uncertain. In this study, two typical paddy soils (acidic and calcareous purple soils) in the western region of Chongqing were selected for field plot experiment, with the purpose of understanding the effects of Si implementation methods on grain yields and cadmium (Cd) uptake, transport, and accumulation in the grain of a hybrid rice (Oryza sativa L, Changliangyou 772). Four treatments were set for the purposes including soil-based Si application, foliar spray of Si alone, foliar spray of selenium (Se)-containing Si fertilizer, and a control without Si application, respectively. The results indicated that the Si applications reduced Cd contents in brown rice by 11.45~51.85% in the slightly Cd-contaminated acidic purple soil (pH = 4.77, soil total Cd content 0.413 mg kg-1) and 26.93~43.77% in the purple calcareous paddy soil (pH = 7.77) with similar Cd-polluting levels. It is worth noting that the Cd content of conventional fertilized rice exceeds the Chinese National Food Safety Standard limit (0.2 mg kg-1, GB2762-2017) in the slightly Cd-contaminated acidic purple soil, and foliar spray treatments showed most effective effects that meets the safety threshold standard. Soil-based Si application reduced Cd accumulation in rice grains mainly by inhibiting the translocation of Cd from stem to the rice grain or root to stem, while foliar sprays of Si mainly by inhibiting the translocation of Cd from stem to brown rice. Si applications increased the rice yield by 17.15 to 25.45% in calcareous paddy soil with foliar spray being the best, while no significant yield increase was found in acidic paddy soil. Si and Se-containing Si fertilizer improved the nutritional quality of rice grain as indicated by the increases of Se, Si, and protein contents and the significant decreases of Cd contents in the rice grains. The comprehensive effects in improving the rice quality follow the order of foliar spray of Se-containing Si fertilizer > foliar spray of Si alone > soil-based Si application. Thus, foliar spray Si-containing fertilizer could be helpful in increasing rice yield while reducing the Cd uptake in rice grains, which might be a feasible approach in controlling Cd entry into the human body via crops. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/32240508/Silicon_application_improved_the_yield_and_nutritional_quality_while_reduced_cadmium_concentration_in_rice_ L2 - https://dx.doi.org/10.1007/s11356-020-08357-4 DB - PRIME DP - Unbound Medicine ER -