This edited book elucidates the evolution of plant virus, genomic structure, diversity, plant-virus interaction, subcellular movement etc. The book reviews the biological machineries which allow the emergence of virus populations adapted by plant. The main objective of this book is the demonstration of a clear synergistic effect of plant viruses, an effect that was unexpectedly as important as applied alone. Ornamental plants are very popular and economically important worldwide. The international market of ornamentals is constantly expanding. Viruses and viroids can significantly reduce both decorative value and quality of propagated material of ornamentals. Due to the wide range of ornamental plant species and cultivars and their wide geographical distribution, the diversity of viruses that infect them is also high. The new emerging viruses are the causal agent for the economic loss of many important ornamental plants. Therefore, this book also adds value to current knowledge of virus stress response in ornamental plants and will provide the groundwork necessary for building future strategies for product enhancement. This book is of interest to teachers, researchers, capacity builders and policymakers. It can serve as additional reading material for undergraduate and graduate students of virology, agriculture and plant sciences.

Handbook of Plant Virus Diseases presents basic information about viral-caused and viral-like diseases in many cultivated crops. It provides authoritative descriptive symptomatic signatures of virus diseases to aid in the diagnosis and possible control of viruses. It organizes cultivated plants into groups according to their final destinations and uses after harvest - a useful grouping system that indicates that some diseases, their resultant epidemiology, and control measures are characteristic within different groups. It summarizes current knowledge about various virus-induced diseases in many economically important cultivated crops and addresses the need for an improved acronym system by presenting a new system that provides

Symptomatology: changes in the appearance of plants. Symptomatology: changes within infected plants. Symptomatology: effects on host-plant metabolism. Methods of transmission. Transmission by animals while feeding. Methods of assay. The composition of virus particles. The morphology of viruses. Types of inactivation. Virus multiplication. Movement within host plants. Genetic variability. Classification. The control of virus diseaes.

This is the second edition of a widely-respected book covering all aspects of virus pathology of trees and shrubs. This new edition contains much new information and the inclusion of a colour plate section will be of great use in symptom recognition.