For those unfamiliar with plant viruses , the name assign to them can be shoddy , as a computer virus ’ host range is sometimes broad and the symptom produce can be variable . Traditionally , plant viruses are name for the first innkeeper industrial plant they are identify in association with and the overriding symptom they get . Such is the slip with tomato espy wilt virus ( TSWV ) and impatiens necrotic spot computer virus ( INSV ) . Despite their rather specific name , both of these virus have broad host mountain chain and can cause a form of symptoms on legion floriculture and vegetable crops .
by Angela Madeiras and Jim Mussoni
Symptoms resemble those do by TSWV and INSV have been note late on tomato plant and impatiens in greenhouses : tomato in one location test positive for TSWV according to an immunostrip test . TSWV and INSV are nearly related and may produce similar symptoms . On tomato and some other hosts , TSWV unremarkably get wilting and a characteristic blueprint of small chocolate-brown spots near the petiole goal of booklet . Plants may break down to set fruit or create fruit that is heavily mottled . INSV typically causes round necrotic lesions or ringspots on leaves . leafage may also display a yellow mosaic or line practice . Both viruses can also cause stunting , radical necrosis , and yellowing , distortion , and/or cutting off of leave-taking .
Both TSWV and INSV are transmitted by thrip . westerly flower thrips ( Frankliniella occidentalis ) is an important vector of both virus ; in gain , TSWV may also be distribute by onion thrip ( Thrips tabaci ) and baccy thrips ( Frankliniellafusca ) . Thrips larvae win the virus by feeding on infect plants , and the viruses are transmitted to unexampled hosts when grownup thrips feed on them . The computer virus is not pass on from grownup thripid to their issue . Learn more about thrip and computer virus transmission .
Plant Virus ManagementInspect incoming plant fabric carefully , as plug trays and other extension materials may be infected with computer virus and/or overrun with thrips when they are brought into the greenhouse . veggie set off in the nursery often become infected with TSWV or INSV when infected ornamental are work into the greenhouse and thrips are present . Keep greenhouses and surrounding environs free of weeds , as many species can harbor both thrips and viruses . There is no cure for industrial plant virus infection : prevention of computer virus outbreak in the nursery need excluding septic industrial plant material from the greenhouse , grow cultivar that show some resistance , and controlling thripid . For data on resistant vegetable cultivars , seehttp://vegetablemdonline.ppath.cornell.edu/. For info on product register for thrips management , see the New England Greenhouse Management Guide .
reservoir : University of Massachusetts Amherst
