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Other viruses in Closteroviridae
Grapevine leafroll-associated virus is a name for a group of viruses that infect grapevine.
Obscure mealybugs feed on the phloem of vines and woody-stemmed plants, especially pear and apple trees and grape vines. Some individuals are vectors for infectious pathogens and can transmit them from plant to plant while feeding; mealybug-spread grapevine leafroll associated virus type III , in particular, has wreaked havoc among the grapes of New Zealand, reducing the crop yield of infected vineyards by up to 60%.
The biggest problems in Grapevine Leafroll Disease are reduced grape yield, altered grape ripening, and altered grape chemistry. Leafroll viruses are associated with rugose wood condition of grapevine.