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Engineering virus resistance in agricultural crops.
P J van den Elzen1, M J Huisman, D P Willink
1MOGEN International nv, Leiden, Netherlands.
Plant Molecular Biology
|September 1, 1989
Summary
Developing virus resistance in potato plants involves introducing viral sequences to interfere with multiplication. Constitutive expression of coat protein genes shows promise for engineering resistance against potato viruses X and Y.
Area of Science:
- Plant pathology
- Molecular biology
- Agricultural science
Background:
- Plant viral genomes are small and well-characterized, enabling molecular-level research.
- Virus resistance strategies focus on interfering with viral multiplication cycles.
- Constitutive expression of viral coat protein genes is a successful strategy.
Purpose of the Study:
- To review progress in engineering virus resistance in potato.
- To discuss molecular structures of potato viruses X, Y, and leafroll.
- To address cultivar-specific characteristics and alternative resistance forms.
Main Methods:
- Characterization of plant viral genomes at the molecular level.
- Introduction of viral sequences into plant genomes for interference.
- Constitutive expression of coat protein genes for virus resistance.
Main Results:
- Coat protein-mediated protection is the most successful strategy to date.
- Engineering resistance against potato virus X in potato has been achieved.
- Preservation of cultivar-specific characteristics is crucial for commercial application.
Conclusions:
- Significant progress has been made in engineering virus resistance in potato.
- Coat protein-mediated protection is a key strategy, with ongoing research into alternatives.
- Balancing virus resistance with maintaining desirable cultivar traits is essential for agricultural application.