Soybean Seed Oil Content via PAE Enzyme Expression
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Solution Overview
Problem
Current technologies lack effective methods to modulate the synthesis of storage compounds like oil, protein, and soluble carbohydrates in plants, particularly in soybean seeds, which limits the economic value and processing efficiency of soybean crops.
Innovation Solution
Development of transgenic plants and seeds with recombinant DNA constructs encoding polypeptides with at least 70% sequence identity to specific PAE or PAE-like proteins, which alter the expression of these proteins to increase oil content and modify storage compound levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional soybean cultivation is used, then the crop is easy to grow with standard processing, but the oil content is limited and economic value is constrained
Solution Approach 1:
The patent modifies the biochemical parameters of seed storage compounds by altering enzyme expression. Specifically, it overexpresses PAE (pectin acetyl esterase) and PAE-like proteins to modify the degradation of storage compounds, thereby changing the oil, protein, and carbohydrate composition ratios in soybean seeds to achieve up to 4% increase in oil content.
Solution Approach 2:
The patent introduces foreign or modified genes encoding PAE and PAE-like proteins into soybean plants. These copied genes are inserted via recombinant DNA constructs that may originate from other species or be synthetic versions of the enzyme genes, allowing the plant to produce modified enzyme proteins that alter storage compound metabolism.
2Productivity
If storage compound biosynthesis pathways are not modulated, then the plant metabolism is stable and simple, but the economic value and processing efficiency are limited
Solution Approach 1:
The patent utilizes the natural feedback mechanisms of metabolic pathways by overexpressing specific enzymes (PAE and PAE-like proteins) that regulate the breakdown of storage compounds. This creates an enhanced feedback loop where the enzyme activity dynamically adjusts the conversion rates of storage compounds, optimizing the balance between oil, protein, and carbohydrate accumulation based on plant developmental stage and environmental conditions.
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
The approach results in increased oil content in soybean seeds by up to 4% on a dry-weight basis, enhancing the economic value and processing efficiency of soybean crops.
Implementation Method 1
the use of such fragments to modulate expression of a gene encoding PAE or PAE-like activity
Implementation Method 2
PAE specifically de-acetylates acetylated carbohydrate polymers, such as xylan and pectin
Data Source
AI summary
This invention is in the field of plant molecular biology. More specifically, this invention pertains to isolated nucleic acid fragments encoding PAE or PAE-Like proteins in plants and seeds and the use of such fragments to modulate expression of a gene encoding PAE or PAE-Like protein activity in a transformed host cell.