CRISPR/Cas9 Editing of Peanut SP Gene for Determinate Growth
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Solution Overview
Problem
There is a long-standing need to rapidly and efficiently manipulate Legume plant architecture to enhance yield and reduce production costs, particularly for crops like peanuts and cowpeas that lack desirable domestication traits.
Innovation Solution
The use of CRISPR/Cas9 genome editing technology to introduce targeted mutations in the SELF PRUNING (SP) gene of Peanut (Arachis hypogaea), resulting in reduced expression and altered plant architecture, such as determinate growth habit and earlier flowering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional breeding methods are used to manipulate Legume plant architecture, then genetic diversity and trait improvement are achieved, but the process is time-consuming and costly
Solution Approach 1:
The patent replaces traditional mechanical breeding methods (cross-pollination, selection, and generation advancement) with CRISPR/Cas9 genome editing technology. This substitution enables precise manipulation of plant architecture genes (SP, TFL1, CEN) directly at the molecular level, achieving determinate growth habit and improved yield traits in a single generation rather than through multiple breeding cycles.
Solution Approach 2:
The patent changes the genetic parameters of Legume plants by introducing specific mutations in key developmental genes. By targeting and modifying the SP (Self Pruning), TFL1 (Terminal Flowering 1), and CEN (Centroradialis) genes, the invention alters plant architecture from indeterminate to determinate growth habit, enabling synchronized flowering and mechanical harvest readiness without lengthy breeding programs.
2Ease of operation
If Legume plants are bred for determinate growth habit to enable mechanical harvesting, then harvestability is improved, but genetic diversity and adaptability may be reduced
Solution Approach 1:
The patent applies local quality by making precise, targeted modifications to specific genes (SP, TFL1, CEN) responsible for plant architecture while leaving the rest of the genome unchanged. This localized genetic editing approach confers determinate growth habit and mechanical harvestability without introducing broad genetic changes that could reduce overall genetic diversity and adaptability of the Legume species.
3Productivity
If multiple genes controlling plant architecture are edited simultaneously, then trait improvement is accelerated, but the complexity of the editing system increases
Solution Approach 1:
The patent merges multiple gene editing operations into a single CRISPR/Cas9 system deployment. By designing guide RNAs that target multiple architecture genes (SP, TFL1, CEN) simultaneously, the invention achieves coordinated modification of several genetic loci in one transformation event, accelerating trait improvement while managing system complexity through unified delivery of the Cas9 enzyme and multiple gRNA sequences.
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
This approach enables the generation of Legume plants with improved domestication traits, including determinate growth, earlier flowering, and enhanced yield, which can be achieved more quickly and cost-effectively than traditional breeding methods.
Implementation Method 1
The use of CRISPR/Cas9 genome editing technology to introduce targeted mutations in the SELF PRUNING (SP) gene of Peanut (Arachis hypogaea)
Implementation Method 2
Small indels and large insertions have been identified in the targeted regulatory regions of SlCLV3 and SlWUS in T0 and their T1 mutant plants
Data Source
AI summary
The present disclosure relates to conferring desirable agronomic traits in Legume plants. More particularly, the current invention pertains to producing Legume plants with improved traits by manipulating genes controlling plant architecture.