HCP7 Protein Overexpression for Soybean Rust Resistance
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Solution Overview
Problem
Current methods fail to provide effective resistance against soybean rust, a significant fungal pathogen affecting soybean crops, as existing resistance mechanisms are often overcome by rapid evolutionary changes in the pathogen, leading to reduced yields and reliance on fungicides.
Innovation Solution
Increasing the expression and activity of the HCP7 protein in plants to enhance resistance against fungal pathogens, specifically soybean rust, through transgenic approaches using recombinant expression vectors and nucleic acids encoding the HCP7 protein.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional resistance mechanisms are used against fungal pathogens, then initial resistance is provided, but resistance is overcome by rapid evolutionary changes in the pathogen leading to reduced effectiveness
Solution Approach 1:
The patent introduces a novel resistance mechanism based on HCP7 protein overexpression that fundamentally changes the resistance parameters compared to conventional R-gene based resistance. This new resistance system provides broad-spectrum protection against multiple fungal pathogens including rusts, powdery mildews, and downy mildews, and maintains effectiveness against evolutionarily diverse pathogens, thereby resolving the contradiction between initial effectiveness and long-term durability
Solution Approach 2:
The HCP7 protein provides universal resistance against multiple fungal pathogen types through a single mechanism. The protein is capable of protecting against biotrophic, hemibiotrophic, and necrotrophic fungi across different pathogen families, making the resistance system broadly applicable and durable against pathogen evolution, thus addressing both reliability and duration requirements
2Productivity
If monocultures are cultivated for food production, then agricultural efficiency is improved, but susceptibility to epidemic-like spreading of diseases increases
Solution Approach 1:
The patent applies preliminary anti-action by introducing the HCP7 resistance mechanism into crop plants before pathogen exposure occurs. This preemptive resistance protection is particularly valuable for monoculture systems where disease spread can be rapid and catastrophic, allowing high-yield monocultures to maintain both productivity and disease resistance simultaneously
3Object-affected harmful factors
If pesticides are used to control pathogens, then pathogen growth is suppressed, but reliance on chemical inputs increases and environmental impact worsens
Solution Approach 1:
The HCP7 resistance mechanism enables plants to defend themselves against fungal pathogens through endogenous protein production. The resistance is built into the plant's own biological system, eliminating the need for external chemical interventions and allowing sustained pathogen control without chemical input dependency or environmental harm
Data Source
AI summary
The present invention relates to a method of increasing resistance against fungal pathogens of the family Phacosporaceae in plants and/or plant cells. This is achieved by increasing the expression of an HCP7 protein or fragment thereof in a plant, plant part and/or plant cell in comparison to wild type plants, wild type plant parts and/or wild type plant cells. Furthermore, the invention relates to transgenic plants, plant parts, and/or plant cells having an increased resistance against fungal pathogens, in particular, pathogens of the family Phacopsoraceae, and to recombinant expression vectors comprising a sequence that is identical or homologous to a sequence encoding an HCP7 protein.