Symptoms

Chlorotic ringspots, chlorotic spots and mottle of leaves, which are sometimes accompanied by foliar deformations such as twisting and underdevelopment of the lamina. Diseased trees sometimes, also suffer from a distinct loss of vigor. Examples of symptoms in common oak (Quercus robur) see below.

Deformed leaves of CORaV-infected oak (Quercus robur) exhibiting chlorotic ringspots, spots and mottle (left), virus transmission, virus transmission by grafting (right).