2021/07/31 by Arran Rumbaugh, Raul Cauduro Girardello, Monica L. Cooper +3 · 1 voice
Agricultural and Biological Sciences · Biochemistry, Genetics and Molecular Biology · #Fermentation and Sensory Analysis #Horticultural and Viticultural Research #Plant Pathogens and Fungal Diseases
paper · pdf · doi:10.3390/plants10081583
openalex publication_date 2021/07/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
Grapevine red blotch virus (GRBV), the causative agent of grapevine red blotch disease, is widespread across the United States and causes a delay in ripening events in grapes. This study evaluates the effects of GRBV on Cabernet Sauvignon grape berry composition, grafted on two different rootstocks (110R and 420A) in two seasons (2016 and 2017). Total soluble solids, acidity, and anthocyanin concentrations were monitored through ripening and at harvest. Phenolic and volatile compounds were also analyzed at harvest to determine genotypic and environmental influences on disease outcome. Sugar accumulation through ripening was lower in diseased fruit (RB (+)) than healthy fruit across rootstock and season. GRBV impact was larger in 2016 than 2017, indicating a seasonal effect on disease expression. In general, anthocyanin levels and volatile compound accumulation was lower in RB (+) fruit than healthy fruit. Total phenolic composition and tannin content was higher in RB (+) fruit than healthy fruit in only 110R rootstock. Overall, GRBV impacted Cabernet Sauvignon grape composition crafted on rootstock 110R more than those crafted on rootstock 420A.