Fri Nov 24, 2017 21:47 pm

Togribase

TOspovirus aGRIcultural DataBASE

About Tospoviruses:

     Tospoviruses are the emerging group of plant viruses causing significant damages and economic loss to a broad range of field crops, vegetables, ornamentals, fruit crops, etc. The name tospovirus derived from the type member Tomato spotted wilt virus (Family Bunyaviridae; genus Tospovirus). The disease spotted wilt was first observed in 1916 in Australia and association with the thrips for transmission was found out latter in 1927. According to properties of particle morphology, host range, and transmission by thrips, TSWV was classified as tomato spotted wilt virus group in 1970. In 1990s, several similar viruses were identified, characterized and Tospovirus genus was created - within Bunyaviridae family. The other members in that family are animal infecting viruses.

            Infection with Tospoviruses results in scattered spots and wilting of plants, reduction of vegetation, and ultimately death of the host plant.

an image

Source:ViralZone, SIB Swiss Institute of Bioinformatics.



Many plant families are known to be susceptible to attack by viruses of the genus Tospovirus. It includes food plants (such as peanuts, watermelons, peppers, tomatoes, zucchini, etc..) and ornamental horticulture major floral ( callas florists, impatient, crysanthèmes, iris, etc..).

            Tospo virus has a negative stranded linear RNA genome((-)ssRNA viruses). The genome is 17.2 kb in size.
                          It has three segments termed as
                                              S (2.9kb)
                                              M (4.8kb) and
                                              L (8.8kb).