Tobacco rattle virus

Tobacco rattle virus (TRV) is a pathogenic plant virus. Over 400 species of plants from 50 families are susceptible to infection. The virus causes the plant disease tobacco rattle in many plants, including many ornamental flowers including Narcissus. It causes the disease corky ringspot in potatoes. The disease manifests in various ways, and signs can include brown rings and arcs on the surface of a potato, and discolored spots on the interior. Nematodes of the family Trichodoridae, the stubby-root nematodes, are vectors of the virus. The nematode species Paratrichodorus minor, for example, introduces the virus when it feeds on the roots of plants. The virus can also be spread on garden tools. It can also be mechanically and seed transmitted.

from Wikipedia