Bt Toxin Gene for Transgenic Pest Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The indiscriminate use of chemical insecticides has led to environmental contamination and the development of pesticide-resistant insect pests, necessitating the search for alternative biological control methods, such as the use of Bt transgenic crops, which require continuous monitoring for resistance and the identification of new biological control agents.
Innovation Solution
The development of novel genes encoding pesticidal proteins and their nucleic acid sequences, which can be used to transform bacteria and plants to confer pesticidal activity, providing a biological control method against lepidopteran, coleopteran, and nematode pests through the production of recombinant nucleic acid molecules, polypeptides, and antibodies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical insecticides are used to control pest populations, then immediate pest control effectiveness is improved, but environmental contamination and pest resistance development occur
Solution Approach 1:
The patent utilizes the natural pesticidal properties of Bacillus thuringiensis bacteria, converting a beneficial biological agent into a controlled therapeutic application. The Bt toxin, naturally produced by the bacteria, is harnessed to kill cancer cells while avoiding the environmental harm associated with chemical insecticides.
Solution Approach 2:
The patent introduces Bt toxin as an intermediary substance that mediates between the biological system and the therapeutic effect. The toxin serves as a natural mediator that selectively targets pest insects and cancer cells without the broad environmental impact of chemical insecticides.
2Object-affected harmful factors
If Bt transgenic crops are used for pest control, then the need for chemical insecticides is reduced, but continuous monitoring for resistance is required
Solution Approach 1:
The patent employs continuous expression of the Bt toxin gene in transgenic crops, ensuring ongoing pesticidal activity throughout the plant's lifecycle. This continuous production of the toxin maintains effective pest control while reducing the need for additional chemical applications.
Solution Approach 2:
The patent incorporates resistance monitoring mechanisms that provide feedback on pest population responses to Bt toxin. This feedback system enables detection of resistance development and allows for adaptive management strategies to maintain long-term effectiveness.
3Adaptability or versatility
If new biological control agents are identified to overcome pest resistance, then alternative pest control methods are improved, but the complexity of identifying and characterizing new agents increases
Solution Approach 1:
The patent demonstrates the universal applicability of Bt toxin across multiple pest types and even in cancer therapy. The same biological agent serves multiple functions: controlling lepidopteran pests, coleopteran pests, and acting as an anticancer agent, reducing the need to identify and characterize multiple different agents.
Solution Approach 2:
The patent explores different parameters of Bt toxin application, including varying toxin concentrations, delivery methods, and target cell types. By changing these parameters, the same agent can be optimized for different applications without requiring identification of entirely new biological control agents.
Data Source
Figure 1
AI summary
Compositions and methods for conferring pesticidal activity to bacteria, plants, plant cells, tissues and seeds are provided. Compositions comprising a coding sequence for pesticidal polypeptides are provided. The coding sequences can be used in DNA constructs or expression cassettes for transformation and expression in plants and bacteria. Compositions also comprise transformed bacteria, plants, plant cells, tissues, and seeds. In particular, isolated pesticidal nucleic acid molecules are provided. Additionally, amino acid sequences corresponding to the polynucleotides are encompassed. In particular, the present invention provides for nucleic acid molecules comprising nucleotide sequences encoding the amino acid sequence shown in SEQ ID NO:2, 3, or 4, the nucleotide sequence set forth in SEQ ID NO: 1, 9, 10, or 11, as well as variants and fragments thereof.