Plant Transformation and Gene Editing via Meristematic Cell Division
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current gene editing technologies face challenges in efficiently transforming and regenerating plant cells, particularly for crops like maize, soybeans, canola, wheat, indica rice, sugar cane, and sorghum, due to low transformation efficiency and genotype limitations, making it laborious and time-consuming to introduce transgenes into inbred lines.
Innovation Solution
Introduce expression constructs encoding WUS, BBM, SERK, GRF, and GIF into plant cells to enhance regeneration and transformation efficiency, and combine these with gene editing systems for improved genetic transformation and editing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional gene gun or agrobacterium transformation methods are used, then transformation can be achieved, but transformation efficiency is low and greatly limited by genotype
Solution Approach 1:
The invention changes the biochemical parameters of the transformation system by introducing overexpression constructs of WUS, BBM, and SERK genes. These genetic parameter modifications alter cell division activity and regeneration capacity, thereby improving transformation efficiency across different genotypes including recalcitrant species like wheat, maize, and rice.
Solution Approach 2:
The invention uses WUS, BBM, and SERK gene products as intermediary factors that mediate between the transformation method and the plant genome. These intermediaries enhance cell proliferation and regeneration capacity, acting as bridges that facilitate efficient transformation across diverse plant genotypes without being limited by species-specific barriers.
2Productivity
If traditional transformation methods are used, then transgenes can be introduced, but the process is laborious and time-consuming
Solution Approach 1:
The invention performs preliminary action by pre-establishing a transformation system optimized with WUS, BBM, and SERK overexpression before introducing the target transgenes. This preliminary optimization of cell division and regeneration capacity accelerates subsequent transformation steps, reducing the overall time required for transgene introgression into inbred lines.
Solution Approach 2:
By modifying the physiological parameters of target cells through WUS, BBM, and SERK overexpression, the invention creates a more responsive and efficient transformation system. This parameter change increases throughput by enabling faster regeneration and reducing the number of sequential steps needed to achieve stable transgenic plants.
3Adaptability or versatility
If culture medium components and explant materials are optimized, then some gene types show beneficial culture reaction, but many important crop plants do not generate beneficial culture reaction
Solution Approach 1:
The invention introduces WUS, BBM, and SERK gene products as intermediary factors that directly stimulate cell division and regeneration processes. These intermediaries bypass the need for extensive optimization of culture medium components and explant materials, providing a more universal solution that works across diverse plant species including those previously recalcitrant to transformation.
Solution Approach 2:
The invention fundamentally changes the physiological state of plant cells by overexpressing WUS, BBM, and SERK genes, which directly control cell division and regeneration. This parameter change in cellular activity overrides the limitations of standard culture conditions, enabling beneficial culture reactions in important crop plants like wheat, maize, and rice that previously failed to respond.
Data Source
AI summary
The present invention provides a method for improving plant genetic transformation and gene editing efficiency. Specifically, the method improves the regeneration efficiency of plant genetic transformation and/or improves the efficiency of plant gene editing by expressing genes that promote plant cell division, especially meristematic cell division.