Soybean 3560.4.3.5 Event Detection via Segmented PCR
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Solution Overview
Problem
Current methods for detecting and managing herbicide tolerance in crops are inefficient, requiring extensive screening for optimal gene expression and lacking targeted weed control systems that adapt to regional variations in weed species and crop protection needs.
Innovation Solution
Development of transgenic glyphosate/ALS inhibitor-tolerant soybean plants with the 3560.4.3.5 event, which includes a specific genomic insertion site and polynucleotide sequences, enabling enhanced breeding efficiency and molecular marker tracking, as well as methods for identifying and using these plants for targeted herbicide applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If transgenic soybean plants are developed with multiple herbicide tolerance genes, then herbicide tolerance is improved, but detection and identification complexity increases
Solution Approach 1:
The patent segments the detection process into two distinct parts: (1) detection of the transgene insertion using PCR with primers specific to the insertion site, and (2) detection of herbicide tolerance phenotype through biochemical assays. This segmentation allows each detection method to be optimized independently, resolving the contradiction between multiple tolerance genes and detection complexity.
Solution Approach 2:
The patent introduces molecular markers as intermediaries that link the transgene insertion event to the herbicide tolerance phenotype. These markers serve as detectable proxies for the complex genetic modifications, enabling indirect but reliable detection of events with multiple tolerance genes without requiring direct analysis of each gene.
2Reliability
If extensive screening is performed to identify optimal transgene expression events, then expression reliability is improved, but time and resource consumption increases
Solution Approach 1:
The patent performs preliminary characterization of transgene insertion sites and expression patterns during the initial transformation event creation. By pre-identifying events with optimal insertion locations and expression levels through standardized assays, the need for extensive subsequent screening is reduced, as these pre-screened events are more likely to exhibit reliable expression.
Solution Approach 2:
The patent employs multiple parameters for event characterization including insertion site location, copy number, expression level, and inheritance pattern. By evaluating events across multiple parameters simultaneously rather than sequential screening, the patent accelerates the identification of optimal events while maintaining reliability standards.
3Ease of operation
If standardized herbicide treatment systems are used, then operational simplicity is improved, but adaptability to regional weed variations decreases
Solution Approach 1:
The patent creates dynamic herbicide treatment systems where the herbicide selection and combination can be adjusted based on regional weed pressure and resistance patterns. The transgenic soybean events provide a flexible platform that can accommodate different herbicide regimens (single or multiple herbicides) depending on the specific agricultural context, resolving the contradiction between operational simplicity and adaptability.
Data Source
AI summary
Compositions and methods related to transgenic glyphosate/ALS inhibitor-tolerant soybean plants are provided. Specifically, soybean plants having a 3560.4.3.5 event which imparts tolerance to glyphosate and at least one ALS-inhibiting herbicide are provided. The soybean plant harboring the 3560.4.3.5 event at the recited chromosomal location comprises genomic/transgene junctions having at least the polynucleotide sequence of SEQ ID NO:10 and/or 11. The characterization of the genomic insertion site of the 3560.4.3.5 event provides for an enhanced breeding efficiency and enables the use of molecular markers to track the transgene insert in the breeding populations and progeny thereof. Various methods and compositions for the identification, detection, and use of the soybean 3560.4.3.5 events are provided.