The route of tomato spotted wilt virus inside the thrips body in relation to transmission efficiency

Kritzman, A.; Gera, A.; Raccah, B.; Lent, J.W.M. van; Peters, D.

doi:10.1007/s00705-002-0871-x

Cited by 45 publications

(33 citation statements)

References 17 publications

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“…This system is especially suited to distinguish between direct and indirect effects of the virus on the vector for two reasons. First, TSWV is effectively acquired only by young larvae (Ullman et al 1992a;van de Wetering et al 1996) and is transmitted mainly by adults, after a latent period during which the virus circulates in the vector and replicates in the vector's salivary glands (Ullman et al 1992b;Wijkamp et al 1993;Wijkamp & Peters 1993;Nagata et al 1999;Kritzman et al 2002). This enables investigating the direct effect of the virus on the vector in the absence of the indirect effect through the plant by testing infected vectors on uninfected plants and vice versa.…”

Section: The Experimental Systemmentioning

confidence: 99%

Herbivore arthropods benefit from vectoring plant viruses

et al. 2004

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Plants infected with pathogens often attract the pathogensÕ vectors, but it is not clear if this is advantageous to the vectors. We therefore quantified the direct and indirect (through the host plant) effects of a pathogen on its vector. A positive direct effect of the plant-pathogenic Tomato spotted wilt virus on its thrips vector (Frankliniella occidentalis) was found, but the main effect was indirect; juvenile survival and developmental rate of thrips was lower on pepper plants that were damaged by virus-free thrips than on unattacked plants, but such negative effects were absent on plants that were damaged and inoculated by infected thrips or were mechanically inoculated with the virus. Hence, potential vectors benefit from attacking plants with virus because virus-infected plants are of higher quality for the vector's offspring. We propose that plant pathogens in general have evolved mechanisms to overcome plant defences against their vectors, thus promoting pathogen spread.

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Section: The Experimental Systemmentioning

confidence: 99%

Herbivore arthropods benefit from vectoring plant viruses

et al. 2004

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“…The empty cells on attacked plants create silvery-white spots, referred to as silver damage, which causes yield reduction. The onion thrips are also an important vector of several plant viruses, such as tomato spotted wilt tospovirus (Kritzman et al 2002;Jenser et al 2003), tobacco streak virus (Sdoodee and Teakle 1987), and sowbane mosaic sobemovirus (Hardy and Teakle 1992). T. tabaci may transmit plant viruses in infested canola plants, but this has not been investigated in Iran.…”

Section: Introductionmentioning

confidence: 98%

Life history parameters of Thrips tabaci (Thysanoptera: Thripidae) on six commercial cultivars of canola

et al. 2011

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The onion thrips, Thrips tabaci Lind. (Thysanoptera: Thripidae), is an important pest of the canola crop, Brassica napus L., in the Ardabil region. In this study, life history parameters of T. tabaci were investigated on six canola cultivars, namely: Talayh, Zarfam, RGS003, Opera, Option500, and Hayola401. Experiments were performed in a climate chamber set at 25 ± 1°C and 55 ± 5% RH under 16L:8D. The results indicated that the development time of immature stages was significantly longer on RGS003 than on Opera, Hyola401, Zarfam, Option500, and Talayh. The onion thrips reared on RGS003 had the lowest number of eggs laid per female (15.5) and the lowest survival rate (40%) among the tested cultivars. The lowest intrinsic rate of natural increase (r m ) and population growth rate (k) were observed on RGS003, and were the highest on Zarfam. The generation time (T) was shortest on Zarfam (21.5 days) and longest on RGS003 (26.5 days). Similarly, the doubling time (DT) was shortest on Zarfam (4.5 days) and longest on RGS003 (8.1 days). Considering the significant effect of the host plant on the life history parameters of onion thrips, it was concluded that RGS003 is the least suitable cultivar among the other tested canola cultivars for integrated management of onion thrips in canola fields.

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“…Thrips not only transmit tospoviruses but are also infected with the viruses [15], [16], [17], [18]; thus, tospoviruses likely affect the survival and fecundity of their vector thrips. However, no detrimental effects on the life cycle or cytopathological changes were observed in the vector thrips after TSWV infection [6], [19].…”

Section: Introductionmentioning

confidence: 99%

Effect of Watermelon Silver Mottle Virus on the Life History and Feeding Preference of Thrips palmi

2014

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Thrips-borne tospoviruses cause numerous plant diseases that produce severe economic losses worldwide. In the disease system, thrips not only damage plants through feeding but also transmit causative agents of epidemics. In addition, thrips are infected with tospoviruses in the course of virus transmission. Most studies on the effect of tospoviruses on vector thrips have focused on the Tomato spotted wilt virus–Frankliniella occidentalis system. Thus, we focused on another thrips-borne tospovirus, Watermelon silver mottle virus (WSMoV), to examine the effect of virus infection on its vector, Thrips palmi. In this study, the direct and indirect effects of WSMoV on the life history traits and feeding preference of T. palmi were examined. The survival rate and developmental time of the WSMoV-infected larval thrips did not differ significantly from those of the virus-free thrips. Comparing the developmental time of larval thrips fed on the healthy plants, thrips-damaged plants, and thrips-inoculated plants (the WSMoV-infected plants caused by thrips feeding), feeding on the thrips-damaged plants reduced the developmental time, and the WSMoV infection in host plants partially canceled the effect of thrips damage on the developmental time. In addition, no significant variations between the virus-free and WSMoV-infected adult thrips regarding longevity and fecundity were observed. These results implied that WSMoV did not directly affect the life history traits of T. palmi, but the WSMoV infection indirectly affected the development of T. palmi through the virus-infected plants. Furthermore, feeding preference tests indicated that T. palmi preferred feeding on either the thrips-damaged plants or the thrips-inoculated plants to the healthy plants. The effect of tospoviruses on the life history and feeding preference of vector thrips might vary among host plants, virus species, vector species, and environmental factors.

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The route of tomato spotted wilt virus inside the thrips body in relation to transmission efficiency

Cited by 45 publications

References 17 publications

Herbivore arthropods benefit from vectoring plant viruses

Herbivore arthropods benefit from vectoring plant viruses

Life history parameters of Thrips tabaci (Thysanoptera: Thripidae) on six commercial cultivars of canola

Effect of Watermelon Silver Mottle Virus on the Life History and Feeding Preference of Thrips palmi

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