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Section I: Introduction to Plant Viruses

Chapter 1. What is a virus? I Introduction II History III Definition of a virus
A How viruses differ from other plant pathogens
B Are virus es alive?
IV Classification and nomenclature of viruses
A Virus classification
B Families, genera and species
C Naming of virus species
D. Acronym s and abbreviations
E Plant virus classification
F Virus strains
G Use of virus names V V iruses of other kingdoms VI Summary

Chapter 2. Overview of plant viruses I. Introduction II Economic losses due to plant viruses III Viru s profiles IV Macroscopic symptoms
A. Local s ymptoms
B. Systemic symptoms

1. Effects on plant size

2. Mosaic patterns and related symptoms

3. Yellows diseases

4. Leaf rolling