The Plant Virus
            <i>Tomato Spotted Wilt Tospovirus</i>
            Activates the Immune System of Its Main Insect Vector,
            <i>Frankliniella occidentalis</i>

Medeiros, Ricardo B.; Resende, Renato O.; Ávila, A. C. de

doi:10.1128/jvi.78.10.4976-4982.2004

Cited by 81 publications

(70 citation statements)

References 50 publications

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“…However, comparison of alphavirus-and flavivirus-infected mosquitoes through genomic studies does suggest different dynamics of immune responses, which might be due to the characteristics of the viruses (Sanders et al, 2005;Xi et al, 2008). Interestingly, infection of thrips by tomato spotted wilt bunyavirus also activates classical immune-signalling pathways (Medeiros et al, 2004), indicating that these observations are not only valid in mosquitoes. It should, however, be noted that previous work on D. melanogaster infection with Drosophila C virus has shown that activation of host gene expression at the transcriptional level does not always translate into production of the corresponding proteins (Dostert et al, 2005;Sabatier et al, 2003).…”

Section: Immune Signalling In Response To Arbovirus Infectionsmentioning

confidence: 99%

Advances in dissecting mosquito innate immune responses to arbovirus infection

Atkinson

Attarzadeh-Yazdi

Nash

et al. 2009

Journal of General Virology

108

109

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Section: Immune Signalling In Response To Arbovirus Infectionsmentioning

confidence: 99%

Advances in dissecting mosquito innate immune responses to arbovirus infection

Atkinson

Attarzadeh-Yazdi

Nash

et al. 2009

Journal of General Virology

108

109

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“…To date, only a limited number of virus resistance genes have been identified, and due to high mutation rates, viruses rapidly evolve (Drake and Holland, 1999;García-Andrés et al, 2006) and break monogenic resistances. Herbivores, such as whiteflies and thrips, can apparently benefit from transmitting viruses (Medeiros et al, 2004;Jiu et al, 2007;Belliure et al, 2008).…”

mentioning

confidence: 99%

The Role of Specific Tomato Volatiles in Tomato-Whitefly Interaction

Bleeker

Diergaarde²,

Ament³

et al. 2009

Plant Physiology

256

228

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Bemisia tabaci (whitefly) infestations and the subsequent transfer of viruses are the cause of severe losses in crop production and horticultural practice. To improve biological control of B. tabaci, we investigated repellent properties of plant-produced semiochemicals. The mix of headspace volatiles, collected from naturally repellent wild tomato accessions, influenced B. tabaci initial choice behavior, indicating a role for plant semiochemicals in locating host plants. A collection of wild tomato accessions and introgression lines (Solanum pennellii LA716 3 Solanum lycopersicum 'Moneyberg') were extensively screened for attractiveness to B. tabaci, and their headspace profiles were determined by means of gas chromatography-mass spectrometry. Correlation analysis revealed that several terpenoids were putatively involved in tomato-whitefly interactions. Several of these candidate compounds conferred repellence to otherwise attractive tomato plants when applied to the plant's branches on paper cards. The sesquiterpenes zingiberene and curcumene and the monoterpenes p-cymene, a-terpinene, and a-phellandrene had the strongest effects in free-choice bioassays. These terpenes also elicited a response of receptors on the insect's antennae as determined by electroantennography. Conversely, the monoterpene b-myrcene showed no activity in both assays. B. tabaci apparently uses, besides visual cues, specific plant volatile cues for the initial selection of a host. Altering whitefly choice behavior by manipulation of the terpenoid composition of the host headspace may therefore be feasible.

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“…The pathogen appears to elicit an immune response in the insect vector (Basset et al, 2000). A recent study demonstrated immunities in TSWV-infected F. occidentalis (Medeiros et al, 2004). If such immunity exists and trades off survival in thelytokous T. tabaci, the heavy TSWV-infection may cause an increase in immune activation, which might lead to a lower survival rate.…”

Section: Discussionmentioning

confidence: 99%

Infection of Tomato spotted wilt virus (TSWV) shortens the life span of thelytokous Thrips tabaci (Thysanoptera: Thripidae)

Inoue

Sakurai

2006

Appl. Entomol. Zool.

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The effect of tomato spotted wilt virus (TSWV) infection on the life span of thelytokous Thrips tabaci, which is known as a TSWV vector with a low transmission rate, was studied in two populations, Shimane (SM) and Iwate (IW). No effects of virus infection were found in the developmental period and mortality of the thrips before adult emergence, but a significant increase was observed in age-specific mortality during the adult lifespan of the TSWVexposed thrips group when compared with the non-exposed group (mean total longevity of thrips exposed and not exposed to virus was 18.1 and 20.1 d in the SM population and 19.9 and 21.5 d in the IW population). The latent period (LP) was 14.2 d in the SM population and 17.2 d in the IW population, indicating a relatively longer LP than the LPs reported for Frankliniella occidentalis and F. fusca. The potential transmission period (PTP) from the end of the LP to vector death was only 3.3 d in both of the populations. The higher the level of virus infection, the greater the reduction in adult thrips survival. These results suggest that a long LP and TSWV-induced reduction of thrips survival shorten the PTP. This may be responsible for the low transmissibility of TSWV as well as the low transmission rate in thelytokous T. tabaci populations.

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The Plant Virus Tomato Spotted Wilt Tospovirus Activates the Immune System of Its Main Insect Vector, Frankliniella occidentalis

Cited by 81 publications

References 50 publications

Advances in dissecting mosquito innate immune responses to arbovirus infection

Advances in dissecting mosquito innate immune responses to arbovirus infection

The Role of Specific Tomato Volatiles in Tomato-Whitefly Interaction

Infection of Tomato spotted wilt virus (TSWV) shortens the life span of thelytokous Thrips tabaci (Thysanoptera: Thripidae)

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