Tomato black ring virus

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Tomato black ring virus symptoms on carrot leaf (click on image to enlarge it)
Source: Plant Protection Service, Netherlands - IPM Images

Tomato black ring virus (TBRV)

This virus is widely distributed and infects various crops including vegetables, fruit trees, berry crops and ornamentals. The symptoms depend on the host plant and cultivar. They include necrosis and leaf malformation, but infections can also remain symtomless. TBRV is mainly transmitted through nematodes, but can be also transmitted through seeds and pollen.

The genome consists of 2 single-stranded RNA molecules. RNA1 encodes the RNA polymerase and the proteinase, RNA2 the coat and movement proteins.

Vernacular names
• Deutsch: Buschbohnenringflecken virus
• English: Tomato black ring virus (TBRV)
• Français: virus des taches en anneau noir de la tomate