Endophytic Bacterial Strains for Corn Growth Stimulation
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Solution Overview
Problem
The limitations in corn crop growth due to nutrient deficiencies in the soil, susceptibility to pathogens, and environmental pollution from excessive agrochemical use necessitate the development of sustainable and efficient methods for stimulating plant growth and improving agricultural productivity.
Innovation Solution
Isolation and formulation of endophytic bacterial strains from corn plants, specifically Enterobacter kobei, Pantoea ananatis, and their mixtures, combined with prebiotic substances and excipients, to create a probiotic mixture for stimulating plant growth, applied during the vegetative stage of corn plants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If endophytic bacterial strains are isolated and formulated as probiotic mixtures, then plant growth stimulation and crop yield improvement are achieved, but the complexity of isolation, characterization, and formulation processes increases
Solution Approach 1:
The patent segments the complex microbial community into specific isolated endophytic bacterial strains (Enterobacter kobei, Pantoea ananatis) that can be individually characterized and formulated. This segmentation allows for controlled propagation and application of specific beneficial strains rather than working with complex mixed communities.
Solution Approach 2:
The patent performs preliminary isolation, identification, and characterization of endophytic bacterial strains from corn plants before formulation. This preliminary action ensures that only strains with proven plant growth-promoting capabilities are included in the final probiotic mixture, optimizing effectiveness while streamlining the overall process.
2Productivity
If conventional agrochemical products are used excessively to stimulate plant growth, then crop yield increases, but environmental pollution and soil degradation occur
Solution Approach 1:
The patent replaces chemical agrochemical systems with a biological system based on endophytic bacterial strains. These bacteria naturally produce plant growth-promoting substances (IAA, siderophores, exopolysaccharides) that stimulate crop growth without the harmful environmental effects of synthetic chemicals.
Solution Approach 2:
The endophytic bacterial strains used in the patent have the capability to self-produce essential plant growth promoters and protective compounds. For example, the bacteria synthesize indole-3-acetic acid (IAA) for growth stimulation and siderophores for iron chelation, eliminating the need for external chemical inputs.
3Productivity
If soil nutrients are depleted due to excessive fertilizer use, then initial crop growth is maintained, but long-term soil fertility and crop resilience decrease
Solution Approach 1:
The endophytic bacterial strains establish a feedback relationship with the plant host, where bacteria receive carbon sources from the plant and in return produce growth-promoting substances and protect against stress. This symbiotic feedback loop enhances long-term plant health and soil fertility without depleting nutrient reserves.
Solution Approach 2:
The patent utilizes bacteria that can alter local chemical parameters in the rhizosphere, such as producing siderophores to chelate iron and make it available to the plant, and synthesizing exopolysaccharides that improve soil structure and water retention. These parameter changes enhance soil fertility and plant resilience over time.
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 bacterial strains enhance plant growth by increasing weight, height, leaf production, and root length, demonstrating potential as biofertilizers that improve crop yields and disease resistance while reducing environmental impact.
Implementation Method 1
The isolates produced a significant amount of Indole-3-acetic acid (IAA) (Enterobacter hormaechei BHUJPCS-15; 58.91 μg/mL)
Implementation Method 2
solubilized phosphate (Bacillus subtilis BHUJPCS-24; 999.85 μg/mL)
Implementation Method 3
produced siderophores in high amounts (M14, M115 and M118; Table 1)
Implementation Method 4
produced exopolysaccharides (M14, M115 and M118; Table 1)
Data Source
AI summary
Isolated strains of Enterobacter kobei, Pantoea ananatis and Pantoea ananatis, comprising the characteristics of deposited strains CM-CNRG TB168, CM-CNRG TB169 and CM-CNRG TB171, respectively; wherein said bacterial strains are endophytes of Zea maysL. plants; and exhibit vegetable plant growth stimulant activity. Formulation for stimulating vegetable plant growth including at least one isolated bacterial strain, which is selected from the following group: CM-CNRG BT168, CM-CNRG BT169, CM-CNRG BT171, and mixtures thereof: at least one prebiotic substance: and at least one excipient. Method for stimulating the growth of vegetable plants including applying to vegetable plants, a sufficient amount of a formulation for stimulating the growth of vegetable plants, in accordance with the present invention.