FIT1 Protein Engineering for Soybean Rust Resistance
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Solution Overview
Problem
Current methods for controlling Asian soybean rust, caused by pathogens like Phakopsora pachyrhizi, are costly and not always effective, highlighting the need for plant varieties resistant to fungal pathogens.
Innovation Solution
The development of transgenic plants with nucleic acid sequences encoding FIT1 protein homologs, which confer resistance to fungal pathogens by recognizing and responding to effector proteins such as AvrFIT1, through genetic modification and targeted gene editing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fungicides are applied to control Asian soybean rust, then pathogen infection is suppressed, but production cost increases and effectiveness is reduced
Solution Approach 1:
The plant's own immune system is enhanced through FIT1 protein expression, enabling it to autonomously recognize and respond to pathogen effectors. This self-service mechanism eliminates the need for external fungicide applications while maintaining effective pathogen control.
Solution Approach 2:
The FIT1 protein is预先 expressed in the plant before pathogen infection occurs. This preliminary preparation enables the plant to immediately recognize and respond to effector proteins upon pathogen contact, preventing infection before it can establish itself, thereby eliminating the need for reactive fungicide treatment.
2Reliability
If transgenic modification is performed to introduce FIT1 protein, then pathogen resistance is achieved, but genetic modification complexity increases
Solution Approach 1:
The FIT1 protein serves multiple functions: it acts as a pattern recognition receptor for effector detection, triggers immune signaling cascades, and confers broad-spectrum resistance against different rust fungi species. This multi-functionality is achieved through a single genetic modification, simplifying the overall approach despite the complexity of the modification process.
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 approach results in plants that are resistant or tolerant to fungal pathogens, reducing the need for costly fungicides and improving crop yields by triggering an immune response to pathogen infections.
Implementation Method 1
recognizing and responding to effector proteins such as AvrFIT1
Data Source
AI summary
The present disclosure provides an isolated, recombinant, or synthetic polynucleotide comprising a FIT1 protein, and homologs, fragments, and variations thereof. The disclosure further relates to transgenic plants, plant parts, and plant cells comprising one or more of these polynucleotides, and exhibit resistance or tolerance to a pathogen, such as Phakopsora pachyrhizi. The disclosure further relates to methods of genetically engineering a pathogen resistance or tolerance trait in a plant, plant part, or plant cell, comprising targeted gene editing of a FIT1 homolog, and plants produced therefrom. The disclosure further relates to methods for identifying new functional FIT1 genes and/or alleles thereof.