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Updated: Jan 5, 2026
10:14
Double-stranded RNA Oral Delivery Methods to Induce RNA Interference in Phloem and Plant-sap-feeding Hemipteran Insects
Published on: May 4, 2018
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Mechanisms, Applications, and Challenges of Insect RNA Interference
Kun Yan Zhu1, Subba Reddy Palli2
1Department of Entomology, Kansas State University, Manhattan, Kansas 66506, USA;
Annual Review of Entomology
|October 15, 2019
Summary
RNA interference (RNAi) offers potential for insect pest management, but its efficiency varies across species. New delivery methods are being developed to overcome challenges like dsRNA degradation and uptake, aiming for broader application.
Area of Science:
- Molecular Biology
- Entomology
- Biotechnology
Background:
- RNA interference (RNAi) is a conserved biological process.
- RNAi, triggered by small interfering RNA (siRNA), is a powerful tool for gene function studies.
- RNAi shows promise for developing novel insect pest management strategies.
Purpose of the Study:
- To review the efficiency of RNAi in insects.
- To explore current and novel double-stranded RNA (dsRNA) delivery methods.
- To identify major challenges hindering the widespread application of RNAi in insect pest control.
Main Methods:
- Literature review of RNAi mechanisms and applications in insects.
- Analysis of factors influencing RNAi efficiency, including dsRNA degradation, cellular uptake, and transport.
- Evaluation of conventional (microinjection, feeding, soaking) and advanced dsRNA delivery technologies (liposomes, nanoparticles, symbiont/plant-mediated).
Main Results:
- RNAi efficiency is high and systemic in coleopterans but variable in many other insect groups.
- Factors affecting RNAi efficiency include dsRNA stability, cellular processing, and RNA-induced silencing complex formation.
- Advanced delivery systems like nanoparticle-enabled and plant-mediated methods show potential for improved dsRNA delivery.
Conclusions:
- Variable RNAi efficiency among insect species remains a significant hurdle.
- Development of reliable and effective dsRNA delivery methods is crucial for practical RNAi applications.
- Addressing challenges such as off-target effects and potential resistance is necessary for successful RNAi-based pest management.
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