Abstract
Grapevine red blotch virus (GRBV) has become widespread in the United States since its identification in 2012. GRBV is the causative agent of grapevine red blotch disease (GRBD), which has caused detrimental economic impacts to the grape and wine industry. Understanding viral function, plant–pathogen interactions, and the effects of GRBV on grapevine performance remains essential to developing potential mitigation strategies. This comprehensive review examines the current body of knowledge regarding GRBV, to highlight gaps in the knowledge and potential mitigation strategies for grape growers and winemakers.
Highlights
Plant viruses detrimentally impact crops around the world by reducing yields or decreasing crop quality
With the economic impact of grapevine red blotch virus (GRBV) ranging from 2213 USD/ha to 68,548 USD/ha in the United States [4], recent research has focused on virus functioning, epidemiology, impact on grape metabolism, and wine quality, as well as mitigation strategies
This review examines the existing body of knowledge regarding the viral genome, virus transmission, and the impacts of GRBV on grapevine physiology, grape metabolism, and wine composition
Summary
Plant viruses detrimentally impact crops around the world by reducing yields or decreasing crop quality. Some of the most detrimental of these viruses to the grape and wine industry are grapevine fanleaf virus (GFLV), grapevine leafroll-associated viruses (GLRaV), and the recently recognized grapevine red blotch virus (GRBV) [3,4,5]. In laboratory tests, symptomatic vines tested negative for all known leafroll viruses; this new disease was termed grapevine red blotch disease (GRBD). With the economic impact of GRBV ranging from 2213 USD/ha to 68,548 USD/ha in the United States [4], recent research has focused on virus functioning, epidemiology, impact on grape metabolism, and wine quality, as well as mitigation strategies. This review examines the existing body of knowledge regarding the viral genome, virus transmission, and the impacts of GRBV on grapevine physiology, grape metabolism, and wine composition. Great advancement in our knowledge of GRBV has been achieved, several important research questions remain unanswered and are discussed here
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