PF1378 Nematode Control Agent for Seed Treatment

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Solution Overview

Problem

Existing control methods for plant parasitic nematodes, particularly those belonging to Tylenchoidea, are inadequate, often leading to poor crop growth and malformation, and there is a need for a safer, labor-saving, and environmentally friendly control agent that does not adversely affect non-target organisms.

Innovation Solution

A control agent containing PF1378A (16-keto-aspergillimide), PF1378B (asperparaline A), and PF1378C (asperparaline B) compounds, formulated as dusts, powders, granules, or liquids, effectively targets Tylenchoidea nematodes while promoting dicotyledon growth and ensuring safety for non-target organisms.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional control agents are used, then nematode control effect is achieved, but harmful effects on non-target organisms and environmental load increase

Engineering Contradiction:

Improvenematode control effectVSAvoidharmful effects on non-target organisms

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical structure parameters by introducing fluorine atoms at specific positions (using *a* and *b* parameters to denote fluorine substitution patterns) in the asperparaline skeleton, creating compounds with enhanced nematocidal activity and improved safety profile against non-target organisms

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent applies local quality modification by selectively substituting hydrogen atoms with fluorine atoms at specific positions of the asperparaline molecule (positions indicated by *a* and/or *b*), thereby locally enhancing the molecule's biological activity and selectivity without altering the entire molecular structure

Inventive Principle:

Principle #3Local quality

2Reliability

If existing control methods are applied, then some nematode control is achieved, but labor requirements and exposure risk increase

Engineering Contradiction:

Improvenematode control effectVSAvoidlabor requirements and exposure risk

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent enables preliminary action by allowing seed treatment with the control agent before planting, providing prophylactic protection against nematodes throughout the crop growth cycle without requiring additional labor-intensive applications during cultivation

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent achieves self-service functionality by formulating the control agent for seed treatment, where the crop itself serves as the application medium, eliminating the need for separate application equipment and operations while reducing human exposure risk

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS12439921B2Plant parasitic nematode control agent and method for controlling plant parasitic nematode

Publication Date: 2025.10.14 MITSUI CHEM CROP & LIFE SOLUTIONS INC

AI summary

The present invention provides a Tylenchoidea plant parasitic nematode control agent comprising: at least one compound selected from the group consisting of a compound represented by the following formula (1), a compound represented by the following formula (2), a compound represented by the following formula (3), enantiomers thereof, and agriculturally and horticulturally acceptable acid addition salts thereof as an active ingredient