Transgenic Plant Yield Improvement via Recombinant DNA
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Solution Overview
Problem
Current plant breeding methods fail to efficiently introduce specific DNA into plant genomes to produce transgenic plants with enhanced traits such as improved yield, environmental stress tolerance, and herbicide resistance, limiting the generation of plants with desired agronomic improvements.
Innovation Solution
Development of transgenic plant cells and seeds with recombinant DNA constructs that include a promoter functional in plant cells, linked to DNA encoding proteins with specific amino acid domains or RNA for suppressing endogenous proteins, allowing for the identification and selection of plants with enhanced traits like cold, drought, and herbicide tolerance through screening processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current plant breeding methods are used, then traditional breeding processes continue, but the ability to introduce specific DNA into plant genomes is limited
Solution Approach 1:
The patent uses Agrobacterium tumefaciens as a biological intermediary vector to deliver specific DNA sequences into plant genomes. The Agrobacterium system naturally transfers T-DNA to plant cells, providing an efficient mechanism for genetic transformation that overcomes the limitations of traditional breeding methods.
Solution Approach 2:
The patent replaces mechanical breeding techniques (cross-pollination, selection) with a molecular biology approach using recombinant DNA technology. This substitution enables precise introduction of specific genes rather than relying on random genetic recombination through traditional breeding.
2Productivity
If transgenic plants with enhanced traits are developed, then improved yield and stress tolerance are achieved, but the complexity of identifying useful recombinant DNA increases
Solution Approach 1:
The patent employs selectable marker genes (such as herbicide resistance genes or antibiotic resistance genes) that provide immediate feedback to identify successfully transformed plants. This feedback mechanism allows researchers to efficiently select transgenic plants from large populations without complex screening procedures.
Solution Approach 2:
The patent uses reporter genes such as GUS (beta-glucuronidase) or GFP (green fluorescent protein) that produce visible color changes or fluorescence in transformed tissues. This visual indicator system simplifies the identification of transgenic plants and confirms successful DNA integration.
3Reliability
If screening processes are implemented to identify plants with enhanced traits, then transgenic plants with improved agronomic traits are selected, but the time and resources required for screening increase
Solution Approach 1:
The patent incorporates selectable markers and reporter genes into the recombinant DNA constructs before transformation. This preliminary preparation enables immediate selection and identification of transformed plants at early stages, eliminating the need for lengthy phenotypic screening processes later.
Solution Approach 2:
The patent transforms large numbers of plants with recombinant DNA containing selectable markers, creating an excessive number of transformants. This allows efficient selection of desired traits by simple screening of a large pool, reducing the time needed to find rare beneficial mutations or transgene expressions.
Data Source
AI summary
Transgenic seed for crops with improved traits are provided by trait-improving recombinant DNA in the nucleus of cells of the seed where plants grown from such transgenic seed exhibit one or more improved traits as compared to a control plant. Of particular interest are transgenic plants that have increased yield. The present invention also provides recombinant DNA molecules for expression of a protein, and recombinant DNA molecules for suppression of a protein.