Tomato chlorosis virus

Tomato chlorosis virus (ToCV) is an RNA virus belonging to the genus Crinivirus, a group of plant-infecting viruses in the family Closteroviridae. Tomato chlorosis virus (ToCV) was originally discovered in the mid-1990s in greenhouse-grown tomato plants in north-central Florida, USA. It is an emerging whitefly-transmitted virus that can be found in a variety of tropical, subtropical, and temperate areas around the world. The plant pathogen causes a yellow leaf disorder in solanaceous crops including tomatoes. ToCV is transmissible by whiteflies, phloem-limited and causes symptoms of interveinal chlorosis followed by necrosis in the tomato plants leaves resulting in a reduced fruit yield. ToCV has a wide range of hosts such as pepper and potato. ToCV is transmitted in a semi-persistent manner by whiteflies of the Bemisia tabaci cryptic species complex (at least MEAM1, MED, and NW, formerly biotypes B, Q, and A, respectively), Trialeurodes vaporariorum, and T. abutiloneus. Although ToCV-resistant genotypes have been found in some wild tomato species, these are yet available commercially.

from Wikipedia