MybTF Transcription Factor 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 race-specific and can be rapidly overcome by new virulent strains, leading to reduced yields and reliance on fungicides.
Innovation Solution
Increasing the expression and activity of a Myb-like transcription factor (MybTF) protein in plants, specifically through overexpressing MybTF nucleic acids in transgenic plants, to enhance resistance against fungal pathogens like soybean rust.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If race-specific resistance genes (R genes of NBS-LRR family) are used to control fungal pathogens, then resistance to specific pathogen strains is achieved, but the resistance is rapidly overcome by new virulent races leading to reduced reliability
Solution Approach 1:
The patent applies universality by using MybTF transcription factors that can recognize multiple different pathogen effectors and activate broad-spectrum defense responses. Unlike race-specific R genes that recognize single pathogen avirulence factors, the MybTF-based system provides multi-functional resistance against various rust pathogens and their different virulent races, achieving both broad adaptability and durable reliability.
2Object-affected harmful factors
If pesticides are used to control fungal pathogens, then pathogen infection is reduced, but production costs increase and environmental harm is caused
Solution Approach 1:
The patent implements self-service by enabling plants to produce their own resistance through constitutively active MybTF transcription factors. The plants autonomously activate defense pathways including callose deposition, oxidative burst, and antimicrobial compound production without requiring external pesticide intervention, thereby eliminating environmental harm and reducing costs while maintaining effective pathogen control.
3Productivity
If monocultures are used for agricultural crop production, then farming efficiency is improved, but susceptibility to epidemic-like spreading of diseases increases
Solution Approach 1:
The patent applies parameter changes by modifying the genetic expression parameters of plants to constitutively activate MybTF transcription factors and their downstream defense genes. This genetic parameter modification transforms plants from a susceptible state to a resistant state, allowing monocultures to maintain high productivity while possessing enhanced disease resistance through altered molecular parameters rather than changing agricultural practices.
Data Source
AI summary
The present invention relates to a method of increasing resistance against fungal pathogens of the order Pucciniales in plants and/or plant cells. This is achieved by increasing the expression of a MybTF 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 order Pucciniales, and to recombinant expression vectors comprising a sequence that is identical or homologous to a sequence encoding a MybTF protein.