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Selenium Reduces Rice Plant Tissues Cadmium and Increases the Yield, Quality, and Edible Safety of Rice Grain, and May Affect the Taste of Cooked Rice

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Journal of Soil Science and Plant Nutrition Aims and scope Submit manuscript

Abstract

Purpose

Cadmium (Cd) is toxic to rice seedlings. Studies showed that selenium (Se) could alleviate Cd toxicity in rice seedlings. However, the effect of Se on the accumulation of Cd in mature rice plants and Se accumulation in grain and the quality and dietary intake risk of brown rice are rarely investigated.

Methods

A rice pot experiment was performed with Se-treated Cd-contaminated paddy soil to explore the effect of Se on Cd accumulation of mature rice plants and the yield and quality of the rice grain, as well as the health risks of consuming rice grains.

Results

Adding Se significantly increased the rice grain yield, decreased Cd concentrations in the tissues of rice plants, and significantly decreased protein and amylose concentrations in brown rice, which helped improve the taste and quality of the cooked rice. Adding Se decreased the health risk index of Cd and increased the daily intake of Se for humans by consuming rice; however, excessive Se addition resulted in Se in rice grain exceeding the Tolerable Upper Intake Level.

Conclusion

An appropriate dosage of Se can decrease Cd accumulation in rice, increase yield and Se accumulation, and ensure its edible safety.

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Data Availability

All data included in this study are available upon request by contact with the corresponding author.

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Acknowledgements

This study was financially supported by Hunan Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China (2019TP1027); The Key Laboratory of Ecological Environment and Critical Human Diseases Prevention of Hunan Province Department of Education, School of Basic Medical Sciences, Hengyang Medical School, University of South China (2019–379), and the Project of College Students' Innovative Entrepreneurial Training of Hunan Province(S202010555147).

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Correspondence to Jun Liu.

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On behalf of all authors, the corresponding author states that there is no conflict of interest.

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Liu, J., Mo, A., Ni, J. et al. Selenium Reduces Rice Plant Tissues Cadmium and Increases the Yield, Quality, and Edible Safety of Rice Grain, and May Affect the Taste of Cooked Rice. J Soil Sci Plant Nutr 23, 3461–3469 (2023). https://doi.org/10.1007/s42729-023-01263-x

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  • DOI: https://doi.org/10.1007/s42729-023-01263-x

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