Method for creating low-cadmium-content rice suitable for being planted in heavily cadmium-polluted soil

By introducing and expressing the OsHMA3 protein nucleic acid molecule into rice, the problem of excessive cadmium content in rice grains in heavily cadmium-contaminated soil was solved, and the cadmium content was significantly reduced to meet national standards.

CN120842339APending Publication Date: 2025-10-28HUNAN HYBRID RICE RES CENT
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Patent Information

Application Number
CN202410513353.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-04-26
Publication Date
2025-10-28

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Abstract

The invention discloses a method for creating low-cadmium-content rice suitable for being planted in heavily cadmium-polluted soil. The invention provides a method for cultivating rice suitable for being planted in cadmium-contaminated soil. The method comprises the step of improving the expression quantity and / or activity of OsHMA3 protein in receptor rice, the OsHMA3 protein is any one of the following proteins: (A1) a protein with an amino acid sequence of SEQ ID No.1; (A2) a protein which is obtained by substituting and / or deleting and / or adding the amino acid sequence as shown in SEQ ID No.1 and has the same function as that of the amino acid sequence as shown in SEQ ID No.1; (A3) protein which is derived from rice, has 80% or more of identity with the amino acid sequence in (A1) or (A2) and has the same function with the amino acid sequence in (A1) or (A2); (A4) a fusion protein obtained by connecting a protein tag to the N terminal and / or C terminal of any one of the proteins (A1)-(A3); the receptor rice is rice with the deletion of the OsNramp5 gene.
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Citation Information

Patent Citations

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