Negative Regulators of Rice Agronomic Traits: Functional Insights and Applications in Genome Editing-Based Breeding.
Wu W, Jin F, Xu H, Liao R, Fang Z
Crispr
Every bowl of rice you eat is shaped by thousands of years of breeding, but a new class of gene targets could let breeders fine-tune yield and drought resilience faster than ever — meaning stable rice harvests even as growing seasons grow more erratic.
Plants have built-in 'off switches' that limit how much grain they produce or how well they handle stress — think of them as the plant's internal brakes. Researchers have catalogued dozens of these brake genes in rice and shown that turning them off can lead to bigger harvests, better-tasting grain, and plants that survive drought or disease more easily. The review lays out which genes are the best targets for modern gene-editing tools so breeders can develop improved rice varieties more efficiently.
Key Findings
Negative regulatory genes — those that suppress desirable traits — are high-value targets for genome editing because disabling them can simultaneously improve yield, grain quality, and stress tolerance in rice.
The review synthesizes recent functional characterization of multiple negative regulators across three major trait categories: grain yield, grain quality, and abiotic/biotic stress resistance.
A target-oriented framework is proposed that maps molecular mechanisms and genetic networks of negative regulators, providing a practical guide for selecting genome-editing targets in rice breeding programs.
chevron_right Technical Summary
Scientists have reviewed how switching off certain 'brake' genes in rice can unlock better yields, tastier grain, and stronger resistance to drought and disease — offering a roadmap for precision breeding using CRISPR-style tools.
Abstract Preview
Rice is the staple crop for more than half of the global population, and improving grain yield, grain quality, and stress resistance remain central goals of modern rice breeding. Among current prec...
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