Symbiotic bacteria (Erwinia sp.) in the gut of Frankliniella occidentalis (Thysanoptera: Thripidae) do not affect its ability to transmit tospovirus
| Autor: | F. van de Wetering, J.A.J. Breeuwer, E.J. de Vries, Gerrit Jacobs, M. van der Hoek |
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| Přispěvatelé: | Evolutionary Biology (IBED, FNWI) |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
thripidae
western flower thrips viruses Population Zoology larval stage erwinia spotted wilt virus Aposymbiotic tabaci Plant virus Botany education education.field_of_study biology Thrips EPS-2 fungi Thripidae Tospovirus biology.organism_classification Western flower thrips tswv QL1-991 insect vector Insect Science virus-bacteria interaction protein frankliniella occidentalis Symbiotic bacteria |
| Zdroj: | European Journal of Entomology, 109(2), 261-266. Czech Academy of Sciences European Journal of Entomology, 109(2), 261-266 European Journal of Entomology 109 (2012) 2 European Journal of Entomology, Vol 109, Iss 2, Pp 261-266 (2012) |
| ISSN: | 1210-5759 |
| Popis: | Tomato spotted wilt virus (TSWV) is one of the most harmful plant viruses and one of its most important vectors is the western flower thrips [Frankliniella occidentalis Pergande (Thysanoptera: Thripidae)]. Recently, we reported the close association of Erwinia sp. gut bacteria with this species of thrips. The first instar larvae acquire these bacteria from their food source. A high proportion of adult western flower thrips transmit TSWV after acquiring the virus during the first larval stage when there are no bacteria in their gut. A considerably lower proportion of adults that acquire the virus early in the second instar transmit virus and none of those exposed to virus late on in the second instar do so. The highest prevalence and total number of symbiotic bacteria are recorded in the guts of second instar thrips. This leads to the hypothesis that the build up of bacteria in the gut reduces the acquisition of TSWV, resulting in a lower capacity to transmit the virus. To test this hypothesis, the transmission of this virus by symbiotic and aposymbiotic adult thrips of the NL3 population was studied. Comparison of virus transmission by adult thrips, the larvae of which either had or lacked gut bacteria and were exposed to virus in either the first or second instar, revealed no difference in the ability of symbiotic and aposymbiotic adults to transmit this virus. We conclude that virus transmission is not affected by the number of the symbiotic bacteria Erwinia sp. present in the gut of thrips larvae. |
| Databáze: | OpenAIRE |
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