Selenium Decreases the Cadmium Content in Brown Rice: Foliar Se Application to Plants Grown in Cd-contaminated Soil

Cadmium (Cd) contamination in agricultural soils has become a serious issue owing to its high toxicity threat to human health through the food chain. The purpose of this paper is to explore the availability of foliar selenium (Se) application in reducing Cd enrichment in brown rice. A field experime...

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Bibliographic Details
Published in:Journal of soil science and plant nutrition 2022-03, Vol.22 (1), p.1033-1043
Main Authors: Jiang, Shuochen, Du, Bin, Wu, Qixia, Zhang, Haiwei, Deng, Youyu, Tang, Xiangru, Zhu, Jianqiang
Format: Article
Language:English
Subjects:
Agricultural land
Agricultural pollution
Agricultural production
Agriculture
Biomedical and Life Sciences
Cadmium
Crop yield
Cultivars
Ecology
Environment
Food chains
Food contamination
Food contamination & poisoning
Glutathione
Grain
Heavy metals
Leaves
Life Sciences
Nitrogen
Nutrient content
Original Paper
Oxidative stress
Physiology
Plant Sciences
Proteins
Rice
Selenium
Soil contamination
Soil pollution
Soil Science & Conservation
Soils
Stress (physiology)
Toxicity
Translocation
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Summary:Cadmium (Cd) contamination in agricultural soils has become a serious issue owing to its high toxicity threat to human health through the food chain. The purpose of this paper is to explore the availability of foliar selenium (Se) application in reducing Cd enrichment in brown rice. A field experiment from 2017 to 2019 was conducted to investigate the effects of foliar Se application on the physiology and yields of three rice cultivars and their accumulation of Cd in low-Cd and high-Cd soils. The grain protein contents and yields of rice plants grown in the high-Cd soil were lower than those of plants cultivated in the low-Cd soil by 27.85% and 6.82%, whereas the malondialdehyde (MDA) and Cd contents were higher by 66.06% and 91.47%, respectively. Se application reduced Cd translocation from the stems and leaves to the spikes, decreasing the Cd content in brown rice by 40.36%. Additionally, Se enhanced the antioxidative activity, glutathione and protein contents, and rice yield (7.58%) and decreased the MDA and proline contents. However, these Se effects weakened under the high-Cd soil. Foliar Se application can alleviate Cd-induced physiological stress in brown rice while improving its yield and reducing its Cd content.
ISSN:0718-9508
0718-9516
DOI:10.1007/s42729-021-00711-w