cucumber yellows virus cucumber yellows virus cucumber yellows virus (cuyv) is a species of virus that infects plants, specifically the cucumber and melon. it is transmitted by the greenhouse whitefly. the cucumber yellows virus genome was completely sequenced in 2003. cucumber yellows virus virus classification (unranked): virus realm: riboviria kingdom: orthornavirae phylum: kitrinoviricota class: alsuviricetes order: martellivirales family: closteroviridae genus: crinivirus virus: cucumber yellows virus