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Tomato yellow leaf curl disease and the plant-virus-vector interactions

Tomato yellow leaf curl virus (TYLCV) (Begomovirus, Geminiviridae) is the name given to a complex of ssDNA plant-infecting group of viruses that have single or double genomic components enveloped by an icosahedral coat protein. These viruses infect tomatoes and other vegetable and ornamental crops and cause severe losses estimated by billions of dollars each year. Begomoviruses are exclusively transmitted by the whitefly Bemisia tabaci in a circulative non-propagative manner. First epidemics of TYLCV were reported in Israel in the early 1960’s and later on the causative agent was identified as TYLCV. Epidemics were often associated with the presence of whiteflies. Since then, extensive research in many laboratories in the world was conducted to better understand the interactions between TYLCV, the tomato plant and its only vector B. tabaci. These studies resulted in hundreds of research papers and reviews, and in creating new research disciplines unraveling geminiviruses and their interactions with plants and whiteflies. In this review, we will give the readers an overview presenting the emergence of this field of research, main discoveries that have been made, current research disciplines that are being conducted and future research lines that will bring novel opportunities for controlling TYLCV and whiteflies and preventing their damage.

TYLCV; B. tabaci. tomato; virus; transmission; gene silencing

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