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Updated: Oct 31, 2025
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Large-scale Production of Recombinant RNAs on a Circular Scaffold Using a Viroid-derived System in Escherichia coli
Published on: November 30, 2018
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Identification and Functional Characterization of Viroid Circular RNAs
1Instituto de Biología Molecular y Celular de Plantas (Consejo Superior de Investigaciones Científicas-Universitat Politècnica de València), Valencia, Spain. jadaros@ibmcp.upv.es.
Methods in Molecular Biology (Clifton, N.J.)
|July 1, 2021
Summary
Viroids are small, infectious circular RNAs that replicate in plants. Their unique structure allows purification via CF11 chromatography, enabling further study and transmission to new hosts.
Area of Science:
- Plant pathology
- Molecular biology
- Virology
Background:
- Viroids are small, noncoding, circular RNAs found in plants.
- Unlike other endogenous circular RNAs, viroids are infectious agents capable of autonomous replication within a host.
- Their highly structured nature facilitates specific isolation methods.
Purpose of the Study:
- To outline methods for the purification and characterization of viroid RNA.
- To describe techniques for preparing viroid RNA for transmission studies.
Main Methods:
- Purification of viroid RNA using nonionic CF11 chromatography.
- Polysaccharide removal via 2-methoxyethanol extraction and cetyltrimethylammonium bromide precipitation.
- Electrophoretic analysis to identify viroid-specific bands.
Main Results:
- Viroid RNA can be effectively purified from infected plant tissues.
- Preparations show distinct electrophoretic bands absent in healthy plants.
- Purified viroid RNA is suitable for mechanical inoculation and transmission.
Conclusions:
- Viroid purification protocols are established and effective.
- These methods enable the study of viroid biology and infection cycles.
- The ability to transmit purified viroids facilitates research into their mechanisms of action.
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