BRI1 Gene Editing for Consistent Plant Yield Improvement
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Solution Overview
Problem
Intensive breeding and transgenic approaches have failed to achieve significant yield increases in plants due to the complexity of yield traits and the need for fine-tuning hormone pathways, leading to increased costs and inconsistent results.
Innovation Solution
Modification of Brassinosteroid Insensitive-1 (BRI1) genes in plants using CRISPR-Cas editing systems to introduce targeted mutations, which can be non-natural, to enhance yield traits such as seed size and oil content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If intensive breeding and transgenic approaches are used to increase yield, then yield improvement is achieved, but the complexity of yield traits and need for fine-tuning hormone pathways causes inconsistent results and increased costs
Solution Approach 1:
The patent applies parameter changes by precisely modifying specific amino acid residues in the BRI1 protein sequence (e.g., changing residues at positions 965, 1033, 1091, 1075, or 1036) to alter the hormone pathway sensitivity. This targeted molecular parameter modification enables consistent yield improvement without the trial-and-error approach of conventional breeding, directly resolving the reliability issue while maintaining productivity enhancement.
2Productivity
If multiple small-effect genes are combined through breeding to improve yield, then yield gain is achieved, but research and development costs increase substantially
Solution Approach 1:
The patent extracts the critical functional element from the complex yield trait by identifying and modifying a single master regulator gene (BRI1) that controls multiple yield-related parameters. This extraction approach consolidates what would otherwise require combining multiple small-effect genes into one targeted intervention, dramatically reducing research and development costs while maintaining yield improvement effectiveness.
Solution Approach 2:
The patent segments the yield improvement function into specific amino acid positions within the BRI1 protein, allowing independent optimization of each residue's contribution. This segmentation enables precise control over yield traits without needing to manipulate multiple genes simultaneously, reducing the complexity and cost of breeding programs while maintaining productivity gains.
3Productivity
If transgene technology is used to modify hormone pathways, then yield improvement is attempted, but simple over- or under-expression is not consistent with the fine-tuning effect required
Solution Approach 1:
The patent achieves fine-tuning precision by making specific point mutations at defined amino acid positions in the BRI1 protein rather than using broad over- or under-expression strategies. This parameter-level precision allows exact control over hormone pathway sensitivity, enabling yield improvement without the imprecision inherent in conventional transgenic over-expression approaches.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method produces transgene-free plants with improved yield traits, achieving at least a 5% increase in seed size and oil content compared to control plants, addressing the limitations of existing breeding and transgenic methods.
Implementation Method 1
Modification of Brassinosteroid Insensitive-1 (BRI1) genes in plants using CRISPR-Cas editing systems to introduce targeted mutations
Data Source
AI summary
This invention relates to compositions and methods for modifying Brassinosteroid Insensitive-1 (BRI1) genes in plants, optionally to improve yield traits. The invention further relates to plants having increased improved yield traits produced using the methods and compositions of the invention.