Engineered Diazotrophic Bacteria Nitrogen Fixation Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods fail to effectively extend nitrogen fixation capabilities to non-leguminous plants like wheat, rice, and maize, and rely heavily on nitrogen fertilizers, which are costly and environmentally challenging as global food production needs increase.
Innovation Solution
Genetically engineered bacteria with specific nitrogen fixation or assimilation coding sequences are introduced, enhancing their ability to fix atmospheric nitrogen even in the presence of fertilizers, by modifying native promoter sequences and coding sequences to increase nitrogen fixation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If genetically engineered bacteria are introduced to extend nitrogen fixation capabilities to non-leguminous plants, then nitrogen fixation efficiency is improved, but the complexity of the genetic engineering process increases
Solution Approach 1:
The patent modifies promoter sequences (changing genetic parameters) to enhance the expression of nitrogen fixation genes in engineered bacteria, thereby improving nitrogen fixation efficiency while managing the complexity through targeted parameter optimization rather than complete pathway reconstruction
Solution Approach 2:
The engineered bacteria are designed to perform multiple functions: nitrogen fixation, plant colonization, and potential fertilizer reduction, allowing a single genetic engineering approach to address multiple agricultural challenges simultaneously
2Productivity
If nitrogen fertilizers are used to support increasing food production, then crop productivity is improved, but environmental harm and cost increase
Solution Approach 1:
The patent employs naturally occurring diazotrophic bacteria that can autonomously fix atmospheric nitrogen when provided with appropriate genetic enhancements, eliminating the need for external chemical fertilizer inputs while maintaining crop productivity
Solution Approach 2:
Engineered diazotrophic bacteria serve as intermediaries between atmospheric nitrogen and plant-usable nitrogen forms, providing a biological mediation pathway that replaces direct chemical fertilizer application and its associated environmental harms
3Productivity
If native promoter sequences are replaced with modified sequences to enhance nitrogen fixation, then nitrogen fixation capability is improved, but the difficulty of genetic modification increases
Solution Approach 1:
The patent systematically modifies promoter sequence parameters (such as -10 and -35 regions) to optimize gene expression levels for nitrogen fixation, providing a standardized approach that reduces the complexity of custom genetic design while achieving enhanced capability
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 genetically engineered bacteria significantly increase atmospheric nitrogen fixation in plants, reducing the need for chemical fertilizers and improving crop productivity, especially in challenging environmental conditions.
Implementation Method 1
In biological systems, an enzyme known as nitrogenase catalyzes the reaction which results in nitrogen fixation
Data Source
AI summary
Methods and systems are provided for generating and utilizing a bacterial composition that comprises at least one genetically engineered bacterial strain that fixes atmospheric nitrogen in an agricultural system that has been fertilized with more than 20 lbs of Nitrogen per acre.