Environmental Memory Seeds with DNA Methylation for Stress Tolerance
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Solution Overview
Problem
Existing methods for improving crop yields and stress tolerance in plants do not effectively utilize the environmental stress memory of seeds to enhance the next generation's performance, particularly in response to high temperatures and other environmental factors.
Innovation Solution
The development of environmental memory seeds with controlled methylation levels in specific gene promoters, such as SLB1, Hd1, AGPS2b, GBSSI, SuSy2, AMy1A, and Amy3D, which are cultivated under stress conditions to impart enhanced stress tolerance and yield characteristics to the next generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional seed treatment methods (UV-B irradiation, stress application) are used, then current generation crop yield is improved, but the method does not effectively transmit stress tolerance to the next generation
Solution Approach 1:
The patent applies preliminary action by subjecting seeds to environmental stress treatment before sowing, which prepares the seeds to transmit stress tolerance memories to the next generation. The stress treatment is applied in advance to the seed stage, enabling epigenetic memory formation that will benefit future generations without requiring continuous stress application during crop production.
Solution Approach 2:
The patent employs copying through epigenetic memory mechanisms where environmental stress experiences are copied and transmitted to the next generation via modified DNA methylation patterns and small RNAs. This allows the stress tolerance characteristics to be replicated in offspring without copying the actual stress experience itself, enabling inheritance of adaptive traits.
2Reliability
If environmental stress treatment is applied to current generation plants, then stress tolerance is improved, but the complexity of the cultivation process increases
Solution Approach 1:
The patent simplifies the overall cultivation process by concentrating the stress treatment step at the seed stage before sowing. This preliminary action eliminates the need for complex stress management during the entire crop growth cycle, as the stress tolerance is established once during seed preparation and then inherited by the next generation without requiring ongoing intervention.
Solution Approach 2:
The patent applies self-service by enabling plants to generate their own stress tolerance through epigenetic memory formed during seed development. Once the stress treatment is applied to seeds, the plants automatically inherit and express stress tolerance characteristics without requiring continuous external management or intervention during their growth cycle.
3Productivity
If genetic manipulation methods are used to improve crop yield and stress tolerance, then productivity is improved, but the method requires complex genetic engineering procedures
Solution Approach 1:
The patent replaces mechanical genetic engineering systems with biological epigenetic mechanisms. Instead of using complex genetic manipulation tools and procedures, the patent utilizes natural epigenetic processes involving DNA methylation and small RNA transmission to achieve stress tolerance inheritance, substituting a simpler biological mechanism for a complex technological system.
Solution Approach 2:
The patent applies parameter changes by modifying epigenetic parameters such as DNA methylation levels and small RNA profiles rather than changing the genetic sequence itself. This allows for the transmission of stress tolerance traits through changes in epigenetic state, which can be induced by environmental stress treatment during seed development, avoiding the need for complex genetic engineering.
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
These seeds produce high-yielding, early-maturing crops with improved stress tolerance, allowing for stable agricultural production under changing environmental conditions without genetic manipulation, and can be applied to various plant species including rice, wheat, barley, and soybean.
Implementation Method 1
a seed having a promoter with an effectively controlled methylation level, the promoter being for any gene selected from the group consisting of the SLB1 gene, Hd1 gene, AGPS2b gene, GBSSI gene, SuSy2 gene, AMy1A gene, and Amy3D gene
Data Source
AI summary
The object is to clarify the relationship between environmental stress and seed quality, and to improve the yield and quality of crop seeds by a novel method different from the conventional genetic engineering methods. There is provided a seed of a plant having a promoter with an effectively controlled methylation level for any gene selected from the group consisting of the SLB1 gene, Hd1 gene, AGPS2b gene, GBSSI gene, SuSy2 gene, AMy1A gene, and Amy3D gene or a product thereof, or a harvested product obtained therefrom or a processed product thereof. There is also provided a method for producing a seed of a plant having a useful characteristic, which comprises: the step of cultivating a first generation plant under an environmental stress; and the step of obtaining a seed with environmental stress memory from the cultivated plant or a progeny thereof.