Lettuce infectious yellows virus
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Lettuce infectious yellows virus symptoms on lettuce (click on image to enlarge it)
Author(s): J.K. Brown, University of Arizona
Source: IPM Images
Author(s): J.K. Brown, University of Arizona
Source: IPM Images
Lettuce infectious yellows virus symptoms on Cucumis melo (click on image to enlarge it)
Author(s): J.K. Brown, University of Arizona
Source: IPM Images
Author(s): J.K. Brown, University of Arizona
Source: IPM Images
Lettuce infectious yellows virus (LIYV)
This virus infects lettuce, melon and some other cucurbits in North America, resulting in significant losses. Yield may be reduced by more than 50%. It is of quarantine concern in other regions. Infected plants show symptoms of stunting, interveinal chlorosis, leaf rolling and brittleness. The virus is transmitted by whiteflies in a semi-persistent manner. It cannot be transmitted mechanically.
LIYV has a bipartite genome consisting of positive-sensed RNA. RNA1 contains three ORFs encoding replication-associated proteins and alone is capable of replication. RNA2 is predicted to encode seven proteins.
