Non-destructive Maternal DNA Extraction from Seed Coats
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Solution Overview
Problem
Current methods for analyzing maternal DNA in seeds are either destructive, require germination, or are technically challenging, especially for seeds with complex shapes, leading to damage and high costs in plant breeding and quality control.
Innovation Solution
A non-destructive method involving contacting a seed with an aqueous solution to dislodge maternal DNA from the seed coat surface, allowing for analysis without damaging the seed, which can then be stored or germinated, using sensitive molecular analysis techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If traditional DNA analysis methods are used on seeds, then genetic information can be obtained, but the seed must be destroyed or damaged in the process
Solution Approach 1:
The invention extracts only the necessary component (maternal DNA) from the seed by contacting the seed coat surface with an aqueous solution that selectively dislodges DNA without damaging the seed. This allows DNA analysis while preserving the seed's germination capacity and viability.
2Quantity of substance
If seeds are germinated and grown to obtain DNA, then sufficient tissue can be collected for analysis, but time and resources are significantly consumed
Solution Approach 1:
The invention performs DNA extraction from the seed coat surface before germination, obtaining sufficient maternal DNA for analysis without waiting for the seed to germinate and grow. This preliminary action saves significant time and resources while still providing adequate DNA quantity for molecular analysis.
3Measurement precision
If manual DNA extraction from seed coat is performed, then genetic analysis is possible, but the process is tedious and imprecise
Solution Approach 1:
The invention uses an aqueous solution (hydraulic approach) to automatically dislodge DNA from the seed coat surface through contact and agitation, replacing tedious manual extraction methods. This hydraulic approach simplifies the procedure while maintaining or improving DNA extraction efficiency and analysis precision.
4Loss of information
If destructive DNA analysis methods are used, then complete genetic information can be obtained, but seeds cannot be stored or germinated afterward
Solution Approach 1:
The invention takes out only the maternal DNA component from the seed coat surface using aqueous contact, leaving the seed intact and undamaged. This selective extraction provides complete maternal genetic information for analysis while preserving the seed's ability to be stored long-term or germinated afterward.
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
Enables rapid, efficient, and cost-effective analysis of maternal DNA, reducing the need for tissue sampling and specialized equipment, and allowing for high-throughput screening of large seed populations, thereby accelerating genetic selection and quality control processes.
Implementation Method 1
agitating the seed in contact with the aqueous solution to dislodge DNA from the seed coat surface
Data Source
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AI summary
The present invention relates to a non-destructive method for analysing maternal DNA of a seed. In this method the DNA is dislodged from the seed coat surface and can be used to collect information on the genome of the maternal parent of the seed. Also, the present invention provides a high throughput DNA analysis system for large plant populations.