Citrus variegation virus (CVV), a member of subgroup 2 of Ilarviruses in the family Bromoviridae, is the causal agent of infectious variegation, a disease occurring all over the world, causing problems for production especially in some susceptible varieties of lemon and mandarin. Citrus trees infected with CVV exhibit a range of symptoms that are usually mild on oranges and mandarins but may be severe on citron and lemons with an associated reduction in yield and fruit malformation. Symptoms typical of this include crinkling of leaves associated with areas displaying various degrees of chlorosis. Leaves may be narrower and have an irregular outline. The crinkly leaf symptoms includeswarping, pocketing and crinkling without variegation or reduction in leaf size.