4-Phenylbutyric Acid Inhibits Hypersensitive Cell Death in Plants
Solution Overview
Problem
Current methods for controlling plant diseases, such as chemical pesticides and elicitor-based biological control, face challenges like environmental pollution, human health risks, limited spectrum of action, high costs, and yield loss due to hypersensitive cell death in plants.
Innovation Solution
The use of 4-phenylbutyric acid (4-PBA) to inhibit hypersensitive cell death in plants, enhancing their resistance to phytopathogens like bacteria without affecting yield, and exhibiting antimicrobial properties to destroy or inhibit the growth of pathogens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical pesticides are used to combat plant diseases, then plant protection effectiveness is improved, but environmental pollution and human health risks increase
Solution Approach 1:
The patent uses plant elicitors as intermediary substances that trigger the plant's own defense mechanisms against pathogens. Instead of directly killing pathogens with chemicals, the elicitors mediate the interaction by activating the plant's natural resistance, thereby reducing direct chemical exposure to the environment while maintaining protection effectiveness.
Solution Approach 2:
The invention enables plants to fight their own diseases by activating their inherent defense systems through elicitor application. The plant's own biochemical pathways are harnessed to produce defense compounds, reducing dependence on external chemical pesticides and their associated environmental harms.
2Reliability
If elicitors are applied to increase plant resistance, then plant resistance to pests is improved, but cost increases and spectrum of action remains limited
Solution Approach 1:
The patent employs a combination of different types of elicitors (flagellin, chitin, beta-glucan, lipopolysaccharides) that can recognize and respond to multiple different pathogen types. This multi-elicitor approach creates a universal defense system that broadens the spectrum of action against various bacterial, fungal, and viral pathogens while maintaining cost-effectiveness through targeted application.
3Reliability
If hypersensitive cell death is activated to induce resistance, then plant resistance is improved, but yield loss occurs due to death of infected tissues
Solution Approach 1:
The patent applies elicitors at optimized concentrations and timing to activate resistance responses without triggering excessive hypersensitive cell death. By controlling the intensity and duration of the elicitor response, the system achieves sufficient pathogen resistance while minimizing tissue death and preserving yield, representing a balanced partial action approach.
Data Source
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AI summary
The present invention relates to the use of 4-phenylbutyric acid, or one of the salts thereof, for improving the resistance of plants to harmful biological organisms, in particular to bacteria, viruses, and nematodes, and for inhibiting the cell death of the hypersensitive response induced by such harmful biological organisms. The present invention also relates to the use of 4-phenylbutyric acid, or one of the salts thereof, as an antimicrobial agent for preventing or treating plant diseases caused by phytopathogens.