Journal Article Causal Agent Subject Areas Viruses and viroids Ampelovirus Belgium Closteroviridae Crop Type Epidemiology European distribution Illumina sequencing LRNV Pathogen detection PhCMoV RNA, Viral RNA-seq Rumex acetosa Vegetables apple necrotic mosaic virus biological characterization data sharing emergent viruses epidemiology hawthorn mosaic disease hawthorn tree high throughput sequencing high-throughput sequencing little cherry disease management mechanical inoculation melon chlorotic spot virus