http://www.cnr.it/ontology/cnr/individuo/prodotto/ID283373
The NSs Protein of Tomato Spotted Wilt Virus Is Required for Persistent Infection and Transmission by Frankliniella occidentalis (Articolo in rivista)
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- The NSs Protein of Tomato Spotted Wilt Virus Is Required for Persistent Infection and Transmission by Frankliniella occidentalis (Articolo in rivista) (literal)
- Anno
- 2014-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1128/JVI.00079-14 (literal)
- Alternative label
Margaria P., Bosco L., Vallino M., Ciuffo M., Mautino G. C., Tavella L., Turina M. (2014)
The NSs Protein of Tomato Spotted Wilt Virus Is Required for Persistent Infection and Transmission by Frankliniella occidentalis
in Journal of virology (Print); ASM, American society for microbiology, Washington, DC (Stati Uniti d'America)
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- Margaria P., Bosco L., Vallino M., Ciuffo M., Mautino G. C., Tavella L., Turina M. (literal)
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- MP, VM, CM, TM: Istituto di Virologia Vegetale, CNR, Torino, Italia
BL, MGC, TL: Dipartimento di Scienze Agrarie, Forestali e Alimentari (DISAFA), Università di Torino, Grugliasco (TO), Italia (literal)
- Titolo
- The NSs Protein of Tomato Spotted Wilt Virus Is Required for Persistent Infection and Transmission by Frankliniella occidentalis (literal)
- Abstract
- Tomato spotted wilt virus (TSWV) is the type member of tospoviruses (genus Tospovirus), plant-infecting viruses that cause severe damage to ornamental and vegetable crops. Tospoviruses are transmitted by thrips in the circulative propagative mode. We generated a collection of NSs-defective TSWV isolates and showed that TSWV coding for truncated NSs protein could not be transmitted by Frankliniella occidentalis. Quantitative reverse transcription (RT)-PCR and immunostaining of individual insects detected the mutant virus in second-instar larvae and adult insects, demonstrating that insects could acquire and accumulate the NSs-defective virus. Nevertheless, adults carried a significantly lower viral load, resulting in the absence of transmission. Genome sequencing and analyses of reassortant isolates showed genetic evidence of the association between the loss of competence in transmission and the mutation in the NSs coding sequence. Our findings offer new insight into the TSWV-thrips interaction and Tospovirus pathogenesis and highlight, for the first time in the Bunyaviridae family, a major role for the S segment, and specifically for the NSs protein, in virulence and efficient infection in insect vector individuals. (literal)
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