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Updated: Nov 11, 2025
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In Vitro Selection of Engineered Transcriptional Repressors for Targeted Epigenetic Silencing
Published on: May 5, 2023
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Host-induced gene silencing - mechanisms and applications
Aline Koch1, Michael Wassenegger2,3
1Institute of Phytomedicine, University of Hohenheim, Otto-Sander-Straße 5, Stuttgart, D-70599, Germany.
The New Phytologist
|March 28, 2021
Summary
Host-induced gene silencing (HIGS) offers a potent, non-chemical strategy for plant protection against pests and pathogens. Further research into molecular mechanisms will enable precise, tailored HIGS therapies for diverse plant diseases.
Area of Science:
- Plant Pathology
- Molecular Biology
- Biotechnology
Background:
- Host-induced gene silencing (HIGS) is a promising alternative to chemical pesticides for crop protection.
- Over 170 studies and commercial HIGS products demonstrate its potential.
- Understanding HIGS efficacy requires examining its molecular underpinnings.
Purpose of the Study:
- To analyze the strengths and limitations of HIGS across different plant-pathogen systems.
- To identify knowledge gaps in the molecular mechanisms governing HIGS effectiveness.
- To predict future advancements in HIGS technology and application.
Main Methods:
- Review of existing HIGS literature.
- Analysis of pathosystem-specific HIGS performance.
- Discussion of molecular mechanisms (dsRNA uptake, processing, translocation).
- Speculation on host and pathogen RNA interference (RNAi) interactions.
Main Results:
- HIGS effectiveness varies depending on the specific plant-pathogen interaction.
- Fundamental knowledge of dsRNA molecular mechanisms is crucial for HIGS specificity and efficacy.
- Incompatibility between host and target RNAi machineries can impact HIGS outcomes.
Conclusions:
- Addressing knowledge gaps in HIGS molecular mechanisms is essential for its advancement.
- Future research will enable novel integrative strategies and precise risk assessments for HIGS.
- Development of tailor-made HIGS therapies will improve plant disease management.
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