Synthetic Slug Peptides for Selective Anti-Feeding Control
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Solution Overview
Problem
Current methods for controlling slugs, such as chemical pesticides, are non-specific, costly, and inefficient, leading to environmental harm and potential resistance, while novel peptides targeting slug GPCRs are needed for effective and specific pest control.
Innovation Solution
Development of synthetic peptides, such as SEQ ID NO: 3, SEQ ID NO: 4, SEQ ID NO: 19, SEQ ID NO: 25, and SEQ ID NO: 26, that interfere with slug GPCRs, causing detrimental effects like mortality and anti-feeding, which can be combined with bait materials or applied directly to plants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional chemical pesticides are used to control slugs, then slug mortality is achieved, but non-target organisms such as earthworms are killed and chemical resistance develops
Solution Approach 1:
The patent applies local quality by designing peptides with specific sequences (e.g., SEQ ID NO: 3, 4, 19-28) that are selectively toxic to slugs through targeted GPCR binding, while leaving non-target organisms unharmed. The peptides are derived from slug-specific neuropeptide sequences, creating localized specificity at the molecular recognition level.
Solution Approach 2:
The patent employs parameter changes by modifying peptide sequences to optimize slug specificity and activity. Multiple peptide variants are created with specific amino acid compositions and lengths (e.g., 6-28 residues) to fine-tune binding affinity to slug GPCRs while minimizing off-target effects, achieving controlled selectivity through sequence parameter optimization.
2Reliability
If multiple applications of chemical pesticides are used, then slug control is maintained, but costs increase and residues accumulate in the field
Solution Approach 1:
The patent utilizes short-living organic molecules (peptides) that degrade naturally in the environment after performing their function. The peptide baits provide effective slug control through a single or limited number of applications, with the active ingredient breaking down into harmless amino acids, eliminating persistent residue accumulation problems associated with conventional chemicals.
3Reliability
If chemical pesticides are applied, then slug mortality is achieved, but application costs and operational complexity increase due to weather and soil moisture requirements
Solution Approach 1:
The patent replaces complex chemical delivery systems with simple peptide-containing bait formulations that can be applied as granules, coatings, or direct placements. These baits rely on slug feeding behavior rather than environmental conditions for effectiveness, substituting weather-dependent chemical sprays with behavior-based bait delivery that is easier to apply and more reliable across varying environmental conditions.
Data Source
AI summary
Provided herein are synthetic peptides developed from slug and insect neuropeptides. Peptides described can be used to repel, control or deter slugs, including the gray garden slug (Deroceras reticulatum), from feeding on agricultural and horticultural plants. The peptides can be combined with bait materials, or applied directly to plants or areas, or produced by genetically modified plants.