Application of selenium-containing carbon quantum dots in strengthening organic selenium accumulation of rice grains

By using selenium-containing carbon quantum dots (Se-CDs) in rice cultivation, the problem of low organic selenium accumulation efficiency in rice grains has been solved, and the targeted enhancement of organic selenium forms under high or low temperature conditions has been achieved, thereby improving the stress resistance and nutritional quality of rice grains.

CN122271189APending Publication Date: 2026-06-26HUAZHONG AGRI UNIV
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Patent Information

Application Number
CN202610211930.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-13
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing selenium fertilizers have limited effect on promoting the accumulation of organic selenium in rice grains under high or low temperature adverse conditions, and the efficiency of selenium form conversion is not high. In particular, there are no systematic reports on the application of targeted enhancement of organic selenium forms in rice grains.

Method used

Selenium-containing carbon quantum dots (Se-CDs) can be applied through foliar spraying or root application to enhance the biomass and photosynthetic capacity of plants under abiotic stress, promote the accumulation of organic selenium (including selenocysteine, selenomethionine, and methylselenocysteine) in rice grains, and improve the absorption and conversion of selenium in grains by utilizing their nano-size effect and surface-active groups, as well as enhance the activity of the antioxidant system to alleviate the inhibition of selenium metabolism by abiotic stress.

Benefits of technology

It significantly increases the accumulation of organic selenium in rice grains, enhances stress resistance, and improves the nutritional quality and functionality of rice. In particular, it steadily increases the level of organic selenium under high or low temperature conditions, thus ensuring the nutritional quality and functionality of rice.

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Abstract

The invention discloses application of selenium-containing carbon quantum dots in strengthening accumulation of organic selenium in rice grains, and belongs to the technical field of plant growth regulators. The invention provides application of selenium-containing carbon quantum dots in strengthening accumulation of organic selenium in rice grains, the content of the organic selenium in the rice grains can be remarkably increased, and the selenium-containing carbon quantum dots comprise selenocystine, selenomethionine and methyl selenocysteine; the selenium-containing carbon quantum dots obviously increase the accumulation of total organic selenium under the conditions of high temperature and low temperature in the filling stage of the rice, so that the organic selenium level of rice grains is stably improved under different temperature stresses, the nutritional quality and functionality of the rice are guaranteed, and an efficient and stable method is provided for producing the selenium-rich functional rice.
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