Plant Regulatory Elements for Precise Transgenic Gene Expression
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Solution Overview
Problem
Existing technologies lack efficient regulatory elements for modulating gene expression in plants, particularly in transgenic plants, which are essential for modifying plant phenotypes through genetic engineering.
Innovation Solution
The development of recombinant DNA molecules comprising regulatory elements such as promoters, leaders, introns, and 3' untranslated regions, which are operably linked to heterologous transcribable DNA molecules, enabling precise control over gene expression in transgenic plants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing regulatory elements are used in transgenic plants, then gene expression can be modulated, but the efficiency and precision of gene expression control is insufficient
Solution Approach 1:
The regulatory element is divided into distinct functional segments including a promoter region, a first intron, a coding sequence, and a second intron. Each segment performs a specific function in gene expression regulation, allowing for modular optimization of expression efficiency while maintaining manageable structural complexity.
Solution Approach 2:
The regulatory element is designed to be universally applicable across different transgenic plant systems. The combination of promoter, introns, and coding sequence creates a multi-functional regulatory module that can control expression of various heterologous genes in different plant species, enhancing reliability without proportionally increasing complexity.
2Manufacturing precision
If regulatory elements are operably linked to heterologous transcribable DNA molecules, then precise control over gene expression is achieved, but the complexity of constructing recombinant DNA molecules increases
Solution Approach 1:
The regulatory elements including promoter, introns, and coding sequence are pre-assembled into a functional unit before being operably linked to the heterologous transcribable DNA molecule. This preliminary configuration of the regulatory module simplifies the overall construction process by reducing the number of separate components that need to be assembled during recombinant DNA formation.
Solution Approach 2:
The regulatory element acts as an intermediary component between the heterologous transcribable DNA molecule and the plant cellular machinery. This intermediary structure provides a standardized interface that facilitates precise control of gene expression while simplifying the integration process into various plant genomes.
3Productivity
If existing gene expression modulation methods are used, then plant phenotypes can be modified, but the ability to produce desired commodity products is limited
Solution Approach 1:
The regulatory element enables precise control of gene expression parameters including timing, location, and level of expression. By modifying these parameters through the designed promoter and intron structures, the system optimizes productivity for commodity product production while maintaining reliable phenotype modification.
Solution Approach 2:
The regulatory element is designed to maintain continuous and stable gene expression throughout plant development and across generations. This continuous useful action ensures consistent production of desired commodity products while reliably achieving the intended phenotype modifications in transgenic plants.
Data Source
AI summary
The invention provides recombinant DNA molecules and constructs, as well as their nucleotide sequences, useful for modulating gene expression in plants. The invention also provides transgenic plants, plant cells, plant parts, and seeds comprising the recombinant DNA molecules operably linked to heterologous transcribable DNA molecules, as are methods of their use.