Tomato yellow leaf curl begomovirus (TYLCV) is a serious virus for the vegetable industry. It can stunt tomato growth and limit yields and has been described as one of the most devastating diseases of cultivated tomato, with losses up to 100 percent being observed in tropical and subtropical regions.
Additionally, TYLCV has been reported to cause severe losses in beans (Phaseolus vulgaris) in Israel and in southern Spain, and was reported to be a limiting factor in the production of Lisianthus (Eustoma grandiflora) in Israel.
In tomatoes this virus causes severe stunting of young leaves and shoots, upward and inward rolling of the leaf margins, interveinal yellowing of leaflets and marked stunting. TYLCV reduces fruit set especially when infection occurs prior to flowering, with almost no yield from tomato plants infected during early growth. Symptoms of TYLCV may vary for other host plants, some of which show no visible signs of infection. 

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