chapter  3
23 Pages

Viral pathogenicity

WithSarah Nettleship, Gary D. Foster

Plant viruses can be defined as microscopic transmissible parasites, with small nucleic acid genomes, that require host cell components/metabolism to complete their infection cycle. The small nucleic acid genome equates to a relatively low number of encoded proteins, typically between four and ten. It was probably the simplicity of viruses that initially attracted many research workers to the science. However, recent research has begun to reveal that they may well have been misled.