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Engineering resistance against tomato yellow leaf curl virus (TYLCV) using antisense RNA
1Centre National de la Recherche Scientifique, Gif-sur-Yvette, France.
Plant Molecular Biology
|January 1, 1997
Summary
Antisense RNA technology offers a novel strategy to combat tomato yellow leaf curl virus (TYLCV), a major agricultural threat. Transgenic plants expressing antisense RNA targeting the virus
Area of Science:
- Plant pathology
- Molecular biology
- Virology
Background:
- Tomato yellow leaf curl virus (TYLCV) is a devastating pathogen affecting tomato crops globally.
- TYLCV is transmitted by the whitefly Bemisia tabaci, posing significant agricultural challenges.
Purpose of the Study:
- To investigate the efficacy of antisense RNA technology in conferring resistance to TYLCV in plants.
- To target the messenger RNA of the Rep protein, encoded by the C1 gene, for viral interference.
Main Methods:
- Development of transgenic Nicotiana benthamiana plants expressing C1 antisense RNA.
- Evaluation of plant resistance to TYLCV infection through challenge assays.
- Assessment of transgene effectiveness across multiple plant generations.
Main Results:
- Transgenic plants demonstrated significant resistance to TYLCV infection.
- Some resistant lines remained symptomless, with near-complete suppression of viral replication.
- Resistance was stably inherited through at least two generations of progeny.
Conclusions:
- Antisense RNA targeting the TYLCV C1 gene is a viable strategy for developing resistant tomato varieties.
- This approach offers a promising tool for managing TYLCV and mitigating crop losses.
- The heritability of the resistance suggests potential for long-term disease management solutions.