Tomato spotted wilt virus (TSWV) - University of Florida
breaking isolates of TSWV overcoming resistance on tomato have been identified See pgs 10-11 for resistant tomato cultivars • Chemical control should be integrated with cultural and other methods to reduce selection pressure for resistance development • Apply insecticides specific to vector thrips Do not
Tomato spotted wilt virus (TSWV) and thrips vectors
Tomato spotted wilt virus (TSWV) and thrips vectors Tomato spotted wilt virus (TSWV) is the type member of the genus Tospovirus, family Bunyaviridae Particles are spherical, and membrane-bound, occurring singly or in clusters Genome composed of three RNA particles: S RNA and M RNA are ambisense, while L RNA is of negative polarity
Symptom development and distribution of Tomato spotted wilt
2 Tomato spotted wilt virus (TSWV), of genus Tospovirus and family Bunyaviridae, is 3 one of the most economically important plant viruses, and causes serious losses in 4 numerous crops worldwide (Moyer, 1999, Mumford et al , 1996, Pappu, 2007, 5 Sherwood et al , 2000) TSWV has a very broad host range and is known to infect as
Greenhouse Plant Viruses (TSWV/INSV)
is the case with tomato spotted wilt (TSWV) and impatiens necrotic spot viruses (INSV, formerly TSWV, I strain) TSWV first was discovered on tomatoes in 1919 and now is known to infect over 300 different hosts INSV recently was determined to be a separate virus from TSWV Previously, these viruses had been a problem in subtropical areas
Tospoviruses (Family Bunyaviridae, Genus Tospovirus
numbers of TSWV-susceptible plant species Major crops susceptible to TSWV infection are tomato, pepper, lettuce, potato, papaya, peanut, tobacco, and chrysanthemum TSWV also replicates in its thrips vector In contrast, IYSV has a relatively restricted host range and is commonly found only in monocots such as onion, chive and leek
Tomato Spotted Wilt Virus in Tomato
TSWV is spread by tiny insects called thrips, which pick up the virus by feeding on infected plants TSWV has a wide host range, including many perennial weeds that can host the virus over the winter Thus, there is a readily available source of the virus each year
HOST LIST OF PLANTS SUSCEPTIBLE TO TOMATO SPOTTED WILT VIRUS
virus and named it tomato spotted wilt virus (TSWV) Since thenthe disease has beenreported in several tropical and temperate regions and is considered worldwide in distribution TSWV is unique because itis one ofonly two plantviruses known to be transmitted bythrips Pittman (1927) was the first to establish that
Recent research on Tomato spotted wilt virus in the Central
and TSWV increase on weeds and winter crops May-Jul: rapid increase of TSWV levels on tomatoes and other hosts Aug-Oct: TSWV levels are highest Late-Oct to Nov: Decline in thrips populations and plants supporting TSWV Dec-Feb: TSWV and thrips overwinter at low levels Annual Cycle TSWV/Western flower thrips in Central California
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