2nd degree (Master)
agroecology & plant health
Coordinator Office Hours:
The course is aimed at understanding the interactions between a plant pathogen – a virus – and its plant host. How viruses are able to infect plants, despite the there very small genomes and the few proteins the viruses code for. We will discuss the different strategies viruses use in order to over come the plants defenses, and how to deal with viral diseases.
The aim of the course is to understand the intricate interactions between a virus and its host, and how to cope with plant viruses.
Learning outcomes - On successful completion of this module, students should be able to:
Identify different plant viruses, define viral families,
distinguish between different modes of transmission,
manage viral diseases.
Teaching arrangement and method of instruction:
1. Introduction to plant virology, history at a glance, taxonomy, Koch’s postulates.
2. Viral “life” cycle, basic viral components, entry to the cell and disassembly.
3. Viral replication and expression strategies-how viruses transcribe and translate a number of proteins from a small genome without introns and exons.
A. Plus RNA viruses
B. Minus RNA viruses
C. DNA viruses
4. Viral movement: Cell-to-cell and long distance movement.
5. Assembly of virions.
6. Viral transmission from plant to plant.
7. Viral-insect interactions – potyviruses and aphids, begomoviruses and whiteflies, tospoviruses and thrips.
8. Other “creatures”- viroids and satellites.
9. Viral diagnostics.
10. Management of viral diseases.
11. Genetic resistance to viruses – definition of resistance, tolerance, breeding for resistance. TYLCV as a model for “complex” resistance.
12. Cross protection
13. Transgenic resistance
14. Viral synergism.
Additional Reading Material:
Matthew’s Plant Virology
by Roger Hull
End of year written/oral examination 100 %
Presentation 0 %
Participation in Tutorials 0 %
Project work 0 %
Assignments 0 %
Reports 0 %
Research project 0 %
Quizzes 0 %
Other 0 %