IPD029 Polypeptides Broaden Pest Control Spectrum
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Solution Overview
Problem
Current genetically engineered crops resistant to insect pests have limited efficacy against a narrow range of pests and can develop resistance, necessitating the development of new pesticidal proteins with broader activity spectra and modes of action.
Innovation Solution
The development of novel nucleic acid sequences encoding IPD029 polypeptides, which confer pesticidal activity, are used to transform bacteria, plants, and seeds, providing enhanced resistance against Hemipteran, Coleopteran, Lepidopteran, and nematode pests, including those resistant to existing insecticides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If genetically engineered crops produce pesticidal proteins from Bacillus, then insect resistance is enhanced, but the spectrum of activity remains narrow
Solution Approach 1:
The patent applies universality by engineering crops to produce multiple different pesticidal proteins simultaneously (Cry1Ab, Cry1E, Cry2Ab, Vip3A) that target different insect pest orders. This multi-protein approach enables a single transgenic crop to provide broad-spectrum protection against Lepidoptera, Diptera, Coleoptera, and other pest groups, resolving the contradiction between reliable insect resistance and narrow activity spectrum
Solution Approach 2:
The patent employs composite materials by combining multiple pesticidal protein formulations within a single crop plant. Rather than relying on a single protein, the crop produces a composite of different Bacillus-derived toxins with complementary modes of action and different target specificities, thereby achieving both high reliability against target pests and broad adaptability across multiple pest species
2Productivity
If existing insecticidal compounds are used, then pest control is achieved, but insects develop resistance
Solution Approach 1:
The patent applies periodic action by incorporating proteins with different modes of action (Cry proteins that form pores in gut cells, Vip proteins that disrupt gut lining, and Cyt proteins that cause cell lysis) to delay resistance development. The varied mechanisms of action among the multiple proteins create temporal and mechanistic diversity in pest control, making it difficult for insects to develop simultaneous resistance to all proteins
Solution Approach 2:
The patent converts the potential harm of resistance development into benefit by designing a multi-protein system where resistance to one protein does not confer resistance to others. The presence of multiple proteins with different modes of action transforms the problem of resistance into an opportunity for sustained long-term control, as pests must overcome multiple independent mechanisms simultaneously
3Adaptability or versatility
If broad-spectrum pesticidal activity is achieved, then more pest types are controlled, but the risk of non-target effects increases
Solution Approach 1:
The patent applies local quality by engineering different pesticidal proteins to be expressed in specific plant tissues where different pest types feed. For example, certain proteins are targeted to leaves for Lepidoptera control, while others are directed to roots or stems for Coleoptera and Diptera control. This spatial differentiation of protein expression achieves broad-spectrum activity while minimizing non-target effects by limiting each protein's exposure to its specific target pest population
Data Source
AI summary
Compositions and methods for controlling pests are provided. The methods involve transforming organisms with a nucleic acid sequence encoding an insecticidal protein. In particular, the nucleic acid sequences are useful for preparing plants and microorganisms that possess insecticidal activity. Thus, transformed bacteria, plants, plant cells, plant tissues and seeds are provided. Compositions are insecticidal nucleic acids and proteins of bacterial species. The sequences find use in the construction of expression vectors for subsequent transformation into organisms of interest including plants, as probes for the isolation of other homologous (or partially homologous) genes. The pesticidal proteins find use in controlling, inhibiting growth or killing Hemipteran, Lepidopteran, Coleopteran, Dipteran, fungal, and nematode pest populations and for producing compositions with insecticidal activity.