Cyst Nematode Hatching Accelerators for Starvation-Based Eradication
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Solution Overview
Problem
Cyst nematodes are highly resistant to chemicals and environmental factors, making them difficult to eradicate, and existing hatching stimulants like solanoeclepin A are challenging to synthesize, limiting effective control methods for these plant parasites.
Innovation Solution
A hatching-promoting substance comprising metal ions, salts, metal oxides, chelated metals, plant extracts, neurotransmission-related compounds, metabolism-regulating factors, amino acids, and sulfur compounds is used to promote nematode hatching, often combined with moisture permeation to enhance efficacy, and a screening method is employed to identify effective substances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If solanoeclepin A is used to promote hatching of cyst nematodes, then hatching is effectively promoted, but total synthesis of solanoeclepin A is difficult and costly
Solution Approach 1:
The patent uses structurally simplified analogs (copying the essential functional features) of solanoeclepin A, specifically compounds with beta-carboline core structures that replicate the hatching-promoting activity without requiring complex total synthesis. This approach captures the key pharmacophore elements while eliminating synthetic complexity.
Solution Approach 2:
The patent modifies molecular parameters of the original solanoeclepin A structure by simplifying side chains and core complexity while maintaining the essential beta-carboline framework. This parameter optimization achieves comparable biological activity with dramatically reduced synthetic difficulty and cost.
2Duration of action of stationary object
If cysts are resistant to chemicals and environmental factors, then cyst nematodes survive long in soil, but this resistance makes eradication difficult
Solution Approach 1:
The patent applies hatching-promoting substances to induce premature hatching of cyst nematodes before they can parasitize host plants. By triggering hatching in the absence of suitable hosts, the method converts the cysts' long-term survival advantage into a vulnerability, causing larvae to emerge and subsequently starve.
Solution Approach 2:
The patent exploits the cysts' inherent hatching response mechanism (normally a beneficial adaptation for survival) against them by using synthetic hatching stimulants. The same physiological pathway that ensures their survival under normal conditions becomes the route of their eradication when hosts are absent.
3Reliability
If hatching is promoted in the absence of host plants, then nematodes cannot feed and die of starvation, but this requires effective hatching-promoting substances that are currently limited
Solution Approach 1:
The patent develops a class of beta-carboline compounds with universal hatching-promoting activity across different cyst nematode species. This multi-functional approach replaces the need for species-specific extracts like solanoeclepin A, providing broad-spectrum efficacy with a single chemical framework that can be synthesized readily.
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 method effectively promotes nematode hatching, even in the absence of host plants, leading to starvation and death of the nematodes, providing a viable eradication strategy.
Implementation Method 1
the hatching-promoting substance comprises one or more selected from the group consisting of metal ions, salts of metal ions, metal oxides, alkaline earth metal ions, salts of alkaline earth metal ions, chelated metals, chelated alkaline earth metals
Implementation Method 2
permeating water from outside into cysts containing eggs of cyst nematodes
Implementation Method 3
the hatching-promoting substance comprises one or more selected from the group consisting of plant extracts, neurotransmission-related compounds, metabolism-regulating factors
Data Source
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AI summary
The present disclosure provides a substance for promoting the hatching of cyst nematodes (hatching-promoting substance). The hatching-promoting substance may be advantageously used, for example, to prevent damage to crops caused by cyst nematodes, by inducing hatching of cyst nematodes in soil in the absence of host plants, thereby causing the hatched nematodes to die from starvation.