Application of a VviGAI gene mutant and a recombinant vector in dwarf grape breeding

By using gene editing technology, VviGAI gene mutants and recombinant vectors, the problem of low grape breeding efficiency in existing technologies has been solved, achieving a stable reduction in grapevine height and a shortening of the breeding cycle, providing compact grape materials suitable for greenhouse cultivation and potted plants.

CN122235162APending Publication Date: 2026-06-19QINGHAI UNIVERSITY

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
QINGHAI UNIVERSITY
Filing Date
2026-04-24
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Current technologies cannot clearly silence, overexpress, or mutate the VviGAI gene to obtain the desired dwarf grape phenotype, resulting in low grape breeding efficiency, long cycles, and unstable traits.

Method used

By using gene editing technology, VviGAI gene mutants and recombinant vectors, especially CRISPR/Cas9 technology, the VviGAI gene of grapes was edited to achieve targeted reduction of grapevine height. PCR amplification and sequencing analysis were performed using VviGAI gene mutant primers and buffer reagents to obtain stable dwarfing traits.

Benefits of technology

It has achieved a stable reduction in grapevine height, shortened the breeding cycle, improved breeding efficiency, obtained compact grape materials suitable for greenhouse cultivation and pot cultivation, applicable to a variety of grape varieties, and significantly improved the safety and trait orientation of breeding.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention belongs to the field of plant genetic engineering technology, specifically relating to a... VviGAI Application of gene mutants and recombinant vectors in dwarf grape breeding. VviGAI Gene mutants can reduce the height of grapevines, the aforementioned VviGAI Gene mutants are derived from wild-type mutants. VviGAI The wild-type gene is obtained by a point mutation in which the base T at position 113 is replaced by the base A. VviGAI The nucleotide sequence of the gene is shown in SEQ ID NO.1. VviGAI The nucleotide sequence of the gene mutant is shown in SEQ ID NO.2. (Regarding grapes...) VviGAI By performing site-directed mutations in the genes, new grape germplasm with stable dwarfing traits can be obtained, providing excellent materials for grape greenhouse cultivation, potted ornamental cultivation, and intensive production.
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