Cucumber vein yellowing virus
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cucumber leaves healthy (left) and infected with the Cucumber vein yellowing virus (right) (click on image to enlarge it)
Author(s): Svenja Lindenau et al.
Source: Plants vol. 10 (12) art. 2771
Author(s): Svenja Lindenau et al.
Source: Plants vol. 10 (12) art. 2771
Cucumber vein yellowing virus (CVYV)
The virus causes a severe disease of cucumbers, melons and other cucurbits in the Near East and the Mediterranean regions. Infestations can result in significant yield losses with flowers being aborted and fruit production is reduced. The remaining fruits are mostly unmarketable.
The symptoms include stunting, vein yellowing on younger leaves and a general chlorosis on older leaves. The virus is transmitted by Bemisia tabaci in a semi-persistent manner. The particles are filamentous and contain a single-stranded positive-sensed RNA molecule with a size of ~9.4 kb which encodes a large polyprotein which is subsequently cleaved into several proteins by virus-encoded proteinases.
