Biofertilizing Bacterial Strain CNCM I-5372 for Nitrogen Sulfur Mineralization
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Solution Overview
Problem
The intensive use of chemical nitrogen (N) fertilizers in agriculture leads to environmental issues such as water pollution, greenhouse gas emissions, and reduced biological diversity, while sulfur (S) deficiencies in crops have emerged due to reduced industrial emissions and lower S content in fertilizers, necessitating improved nutrient availability and efficiency.
Innovation Solution
A biofertilizing bacterial strain, deposited under the Budapest Treaty as CNCM I-5372, is identified and used to enhance soil microbial activities, increase the availability of mineral N and S, and stimulate plant growth by influencing root architecture and nutrient uptake.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If chemical nitrogen fertilizers are intensively used to increase agricultural production, then crop yield is improved, but environmental pollution and loss of nutrients occur
Solution Approach 1:
The invention changes the source and form of nitrogen supply from synthetic chemical fertilizers to biologically-produced mineral nitrogen through bacterial mineralization of organic matter. This parameter change in nitrogen supply method maintains crop productivity while eliminating the harmful environmental effects of chemical fertilizer overuse
Solution Approach 2:
The bacterial strain performs self-service by naturally mineralizing organic nitrogen in the soil to produce mineral nitrogen forms that plants can directly absorb. This self-service mechanism replaces the need for external chemical fertilizer inputs, maintaining productivity while preventing environmental pollution
2Quantity of substance
If chemical fertilizers are used to improve nutrient availability, then plant growth is enhanced, but nutrient use efficiency by crops deteriorates
Solution Approach 1:
The invention substitutes the mechanical/chemical system of fertilizer application with a biological system where bacteria naturally mineralize organic matter and release nutrients in plant-available forms. This substitution improves both nutrient availability and use efficiency by ensuring nutrients are released in sync with plant needs through biological processes
3Object-generated harmful factors
If industrial emissions are reduced to improve environmental quality, then atmospheric pollution decreases, but sulfur deficiencies in crops appear
Solution Approach 1:
The bacterial strain provides self-service by mineralizing organic sulfur in the soil to produce mineral sulfur forms that plants can absorb. This internal sulfur cycling mechanism compensates for the reduced atmospheric sulfur deposition, maintaining sulfur availability in crops while allowing industrial emissions to be reduced for environmental benefits
4Quantity of substance
If organic matter is mineralized to release mineral nutrients, then nutrient availability to plants is improved, but reliance on chemical fertilizers increases
Solution Approach 1:
The bacterial strain enables the soil system to self-service by naturally mineralizing organic matter and releasing mineral nutrients that plants can absorb. This creates a self-sustaining nutrient cycling system that improves mineral nutrient availability while eliminating dependency on external chemical fertilizer applications
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 strain significantly increases enzymatic activities related to N and S mineralization, enhances the availability of mineral N and S in soils, and promotes plant growth by increasing fine root length and surface area, thereby improving nutrient uptake and reducing the need for chemical fertilizers.
Implementation Method 1
more than 90% of N and S in soils are in organic forms that must be transformed by soil microorganisms (process of decomposition and mineralization of organic matter) to release mineral forms accessible to plants
Implementation Method 2
The inventors have demonstrated in particular that the inoculation of the bacterial strain in accordance with the invention significantly increased the enzymatic activities of the soil involved in the decomposition and mineralization of N and S
Data Source
AI summary
The present invention relates to the field of crop fertilization, and particularly to a biofertilizing bacterial strain. In particular, the present invention relates to the bacterial strain deposited on Oct. 24, 2018, at the Collection Nationale de Culture de Microorganismes (CNCM), 28 rue du Dr. Roux, 75724 PARIS CEDEX 15, under the Budapest Treaty under number CNCM I-5372, and to the uses of this strain. The invention also relates to a composition comprising the above-mentioned bacterial strain and to a fertilization process comprising the application of this composition to a plant or to a soil.