{"title":"Dual soil-rice interventions of silicon-selenium-calcium composites mitigate cadmium and arsenic accumulation in rice grains.","authors":"Yang Ping, Zhenzhou Zhang, Jingwen Yu, Xiaofeng Zhai, Cuihong Yang, Peicheng Huang, Qi Liao, Mengying Si, Qingzhu Li, Chongjian Tang, Zhihui Yang","doi":"10.1007/s10653-025-02568-9","DOIUrl":null,"url":null,"abstract":"<p><p>This study aims to evaluate the effectiveness of selenium, silicon, and calcium in reducing the accumulation of cadmium (Cd) and arsenic (As) in rice, and to explore their synergistic mechanisms. Field experiments were conducted by applying multi-nutrient composite materials (MCM) to rice plants. Environmental health risk assessment, soil pH, Cd and As content in rice grains, iron plaque, and the activity of antioxidant enzymes were measured to evaluate the effectiveness of MCM. The application of MCM significantly reduced the Cd and As concentration in rice grains by 56.76% and 84.75%, respectively. Moreover, MCM reduced the health risks of rice. Soil pH increased from 5.93 to 6.44, reducing the Cd and As bioavailability. Iron plaque formation increased by 60.36-230%, creating a barrier against Cd and As uptake. The increase in available silicon and calcium restricts rice uptake of both Cd and As. MCM promoted the Cd and As accumulation in vacuoles and cell walls, reducing their translocation in rice root, stem and leaf, while enhancing antioxidant enzyme activity. MCM effectively reduces Cd and As accumulation in rice through the synergistic effects of selenium, silicon, and calcium, providing a viable solution for rice safety.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"47 7","pages":"262"},"PeriodicalIF":3.2000,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Geochemistry and Health","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1007/s10653-025-02568-9","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}
引用次数: 0
Abstract
This study aims to evaluate the effectiveness of selenium, silicon, and calcium in reducing the accumulation of cadmium (Cd) and arsenic (As) in rice, and to explore their synergistic mechanisms. Field experiments were conducted by applying multi-nutrient composite materials (MCM) to rice plants. Environmental health risk assessment, soil pH, Cd and As content in rice grains, iron plaque, and the activity of antioxidant enzymes were measured to evaluate the effectiveness of MCM. The application of MCM significantly reduced the Cd and As concentration in rice grains by 56.76% and 84.75%, respectively. Moreover, MCM reduced the health risks of rice. Soil pH increased from 5.93 to 6.44, reducing the Cd and As bioavailability. Iron plaque formation increased by 60.36-230%, creating a barrier against Cd and As uptake. The increase in available silicon and calcium restricts rice uptake of both Cd and As. MCM promoted the Cd and As accumulation in vacuoles and cell walls, reducing their translocation in rice root, stem and leaf, while enhancing antioxidant enzyme activity. MCM effectively reduces Cd and As accumulation in rice through the synergistic effects of selenium, silicon, and calcium, providing a viable solution for rice safety.
期刊介绍：
Environmental Geochemistry and Health publishes original research papers and review papers across the broad field of environmental geochemistry. Environmental geochemistry and health establishes and explains links between the natural or disturbed chemical composition of the earth’s surface and the health of plants, animals and people.
Beneficial elements regulate or promote enzymatic and hormonal activity whereas other elements may be toxic. Bedrock geochemistry controls the composition of soil and hence that of water and vegetation. Environmental issues, such as pollution, arising from the extraction and use of mineral resources, are discussed. The effects of contaminants introduced into the earth’s geochemical systems are examined. Geochemical surveys of soil, water and plants show how major and trace elements are distributed geographically. Associated epidemiological studies reveal the possibility of causal links between the natural or disturbed geochemical environment and disease. Experimental research illuminates the nature or consequences of natural or disturbed geochemical processes.
The journal particularly welcomes novel research linking environmental geochemistry and health issues on such topics as: heavy metals (including mercury), persistent organic pollutants (POPs), and mixed chemicals emitted through human activities, such as uncontrolled recycling of electronic-waste; waste recycling; surface-atmospheric interaction processes (natural and anthropogenic emissions, vertical transport, deposition, and physical-chemical interaction) of gases and aerosols; phytoremediation/restoration of contaminated sites; food contamination and safety; environmental effects of medicines; effects and toxicity of mixed pollutants; speciation of heavy metals/metalloids; effects of mining; disturbed geochemistry from human behavior, natural or man-made hazards; particle and nanoparticle toxicology; risk and the vulnerability of populations, etc.
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