Plant Lipid Production via Multi-Gene Pathway Manipulation
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Solution Overview
Problem
Current methods for increasing lipid content in plants, particularly non-polar lipids like triacylglycerols and mono-unsaturated fatty acids, have resulted in modest increases, limiting the commercial production of biofuels and industrial products.
Innovation Solution
A process involving the manipulation of fatty acid biosynthesis and lipid assembly pathways in plants, algae, and fungi, using combinations of genes to achieve significant increases in oil content, followed by conversion of lipids into industrial products like fatty acid esters through heat, chemical, or enzymatic means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If current methods for increasing lipid content in plants are used, then lipid content increases, but the increase is modest and limits commercial production
Solution Approach 1:
The patent combines multiple gene manipulations (overexpression of lipid biosynthesis genes and suppression of lipid degradation genes) to achieve synergistic effects. This multi-gene approach merges several genetic modifications to produce substantial increases in lipid content (2-fold to 10-fold increases), transforming modest single-gene effects into commercially viable production levels.
Solution Approach 2:
The patent fundamentally changes the parameter of lipid content from typical plant levels (1-5% of dry weight) to elevated levels (10-50% or more of dry weight) through genetic engineering. This parameter change enables the transition from research-scale to commercial-scale lipid production by creating plants with sufficiently high oil content for economically viable biofuel and industrial product manufacturing.
2Quantity of substance
If lipid content in plants is increased, then more biofuel can be produced, but the methods currently available only achieve modest increases
Solution Approach 1:
The patent segments the lipid metabolism pathway into distinct controllable components: fatty acid synthesis, triacylglycerol assembly, and lipid degradation. By manipulating specific genes in each segment (e.g., ACCase for fatty acid synthesis, DGAT for TAG assembly, and lipases for degradation control), the patent achieves precise control over lipid accumulation, enabling predictable and scalable oil content increases.
Solution Approach 2:
The patent employs preliminary action by pre-establishing the genetic foundation for high lipid content through controlled gene manipulations before industrial processing. The transgenic plants are engineered in advance with optimized lipid metabolism pathways, ensuring that when harvested and processed, they yield maximum oil content without requiring complex post-harvest optimization.
3Quantity of substance
If gene manipulations are used to increase lipid content, then substantial increases can be achieved, but process complexity increases
Solution Approach 1:
The patent employs universal genetic tools and methodologies that can be applied across different plant species and lipid metabolism contexts. The same general approach of overexpressing biosynthesis genes and suppressing degradation genes works across various plant systems, reducing the need for species-specific complex engineering and enabling standardized protocols for high-lipid plant development.
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
This approach leads to substantial increases in lipid content in plant vegetative parts and seeds, enhancing the production of biofuels and industrial products by converting non-polar lipids into hydrocarbon products such as fatty acid esters.
Implementation Method 1
converting the lipid to the hydrocarbon products occurs in harvested plant vegetative parts to produce alkyl esters of the fatty acids
Implementation Method 2
converting at least some of the lipid in the vegetative plant part to the industrial product by applying heat, chemical, or enzymatic means
Implementation Method 3
converting at least some of the lipid in the vegetative plant part to the industrial product by applying heat, chemical, or enzymatic means
Data Source
AI summary
The present invention relates to processes for producing industrial products such as hydrocarbon products from non-polar lipids in a vegetative plant part. Preferred industrial products include alkyl esters which may be blended with petroleum based fuels.