Root Nodule Microbial Isolates for Wheat Growth in Arid Soils
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Solution Overview
Problem
Existing technologies are inadequate in promoting plant growth in harsh environments such as arid, low pH, high pH, low temperature, and high temperature conditions, and do not effectively enhance plant growth characteristics like biomass, yield, and resistance to pathogens.
Innovation Solution
The use of specific microbial isolates, including Variovorax boronicumulans EBFNA2, Fictibacillus phosphorivorans EBFTY2, Bacillus ginsengihumi EBFTY3, Rhizobium leguminosarum EBFTY4, Agrobacterium deltaense EBF6ACT1, Methylobacterium oryzae EBF6NA2, Rhizobium sophorae EBF6NA4, Bacillus safensis subsp. safensis EBF6TY3, Paenibacillus sp. DMB5 Fava 2, and Bacillus licheniformis Fava 6, which exhibit nitrogen fixation, siderophore production, and other plant growth-promoting traits, applied to plants through various methods including seed treatment and soil application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional agricultural methods are used in harsh environments, then basic plant survival is maintained, but plant growth characteristics such as biomass, yield, and resistance to pathogens are not effectively enhanced
Solution Approach 1:
The patent applies parameter changes by introducing microbial isolates that can adapt to and thrive in harsh environmental conditions (arid, low pH, high pH, extreme temperatures). These microbes modify the local microenvironment parameters through nitrogen fixation, siderophore production, and other growth-promoting activities, enabling plants to overcome environmental stressors and achieve enhanced growth characteristics.
Solution Approach 2:
The microbial isolates serve as intermediaries between the harsh environment and the plant. These microbes mediate the interaction by producing beneficial compounds (siderophores, nitrogen fixation products, growth promoters) that protect the plant from environmental stress while promoting growth, thus resolving the contradiction between maintaining survival and enhancing productivity under adverse conditions.
2Productivity
If multiple microbial isolates are used in combination, then plant growth promotion and resistance to pathogens are significantly enhanced, but the complexity of the microbial composition increases
Solution Approach 1:
The patent merges multiple microbial isolates with different functional capabilities into a single composition. Each isolate contributes specific functions (nitrogen fixation, siderophore production, phosphate solubilization, growth promotion, pathogen resistance), and their combined effect synergistically enhances plant growth characteristics and stress tolerance beyond what single isolates can achieve alone.
Solution Approach 2:
The microbial composition is designed to perform multiple functions simultaneously - nitrogen fixation, iron chelation, phosphate solubilization, growth promotion, and pathogen resistance. This multi-functionality allows a single microbial preparation to address multiple plant needs, reducing the need for separate treatments while achieving comprehensive growth enhancement.
3Productivity
If microbial isolates are applied through seed treatment and soil application, then plant growth characteristics are significantly improved, but the complexity of the application process increases
Solution Approach 1:
The patent employs preliminary action by applying microbial isolates to seeds before planting (seed treatment). This ensures that the beneficial microbes are already associated with the plant at the earliest growth stage, providing immediate protection and growth promotion. The microbes colonize the seed and early root system, establishing a protective and beneficial microbial community before the plant encounters environmental stresses or soil-borne pathogens.
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 isolates significantly enhance plant growth characteristics by increasing biomass, yield, and resistance to pathogens, with improvements ranging from 5% to 200% or 2-fold to 100-fold in plant growth rate, biomass, and yield under challenging conditions.
Implementation Method 1
The microbial isolates disclosed herein may promote plant growth in a number of ways. In some embodiments, a method of promoting one or more plant growth characteristics comprises promoting one or more of the following characteristics: plant biomass, plant growth rate, plant yield, shoot length, shoot biomass, fresh cob weight, dry cob weight, root biomass, nodulation, nitrogen utilization
Implementation Method 2
In some embodiments, the one or more plant growth-promoting microbial isolates of the present disclosure have one or more of the following abilities: nitrogen fixation, siderophore production, iron chelation, phosphate solubilization
Implementation Method 3
In some embodiments, the one or more plant growth-promoting microbial isolates of the present disclosure have one or more of the following abilities: nitrogen fixation, siderophore production, iron chelation, phosphate solubilization
Data Source
AI summary
Methods and compositions for increasing one or more plant growth characteristics in a plant are disclosed. The compositions comprise one or more microbial isolates that promote plant growth. Methods include providing an effective amount of a composition comprising one or more microbial isolates that promote one or more plant growth characteristics. Aspects of the disclosure are directed to microbial isolates obtained from root nodules of T. aestivum.