Grapevine red blotch disease (GRBD) and grapevine leafroll disease (GLD) are growing threats to the California wine and wine grape sector, which contributes $73 billion annually to the state's economy. These viral diseases not only reduce grape yield and the productive lifespan of vineyards but also affect sugars and other aspects of fruit quality that are relevant to wine flavor profiles. Due to the complexity of the processing and aging winemaking...