Infection with a plant virus modifies vector feeding behavior
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Open Access
- 23 May 2011
- journal article
- research article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 108 (23), 9350-9355
- https://doi.org/10.1073/pnas.1100773108
Abstract
Vector infection by some animal-infecting parasites results in altered feeding that enhances transmission. Modification of vector behavior is of broad adaptive significance, as parasite fitness relies on passage to a new host, and vector feeding is nearly always essential for transmission. Although several plant viruses infect their insect vectors, we have shown that vector infection by a plant virus alters feeding behavior. Here we show that infection with Tomato spotted wilt virus (TSWV), type member of the only plant-infecting genus in the Bunyaviridae, alters the feeding behavior of its thrips vector, Frankliniella occidentalis (Pergande). Male thrips infected with TSWV fed more than uninfected males, with the frequency of all feeding behaviors increasing by up to threefold, thus increasing the probability of virus inoculation. Importantly, infected males made almost three times more noningestion probes (probes in which they salivate, but leave cells largely undamaged) compared with uninfected males. A functional cell is requisite for TSWV infection and cell-to-cell movement; thus, this behavior is most likely to establish virus infection. Some animal-infecting members of the Bunyaviridae (La Crosse virus and Rift Valley fever virus) also cause increased biting rates in infected vectors. Concomitantly, these data support the hypothesis that capacity to modify vector feeding behavior is a conserved trait among plant- and animal-infecting members of the Bunyaviridae that evolved as a mechanism to enhance virus transmission. Our results underscore the evolutionary importance of vector behavioral modification to diverse parasites with host ranges spanning both plant and animal kingdoms.Keywords
This publication has 37 references indexed in Scilit:
- Deceptive chemical signals induced by a plant virus attract insect vectors to inferior hostsProceedings of the National Academy of Sciences, 2010
- Behavioural aspects influencing plant virus transmission by homopteran insectsVirus Research, 2009
- Variation in Tomato spotted wilt virus Titer in Frankliniella occidentalis and Its Association with Frequency of TransmissionPhytopathology®, 2009
- Differences in tomato spotted wilt virus vector competency between males and females of Frankliniella occidentalisEntomologia Experimentalis et Applicata, 1999
- Electrical recording of plant penetration by western flower thripsEntomologia Experimentalis et Applicata, 1996
- Potential of Tomato Spotted Wilt Tospovirus Plant Hosts in Hawaii as Virus Reservoirs for Transmission byFrankliniella occidentalis(Thysanoptera: Thripidae)Phytopathology®, 1995
- A Midgut Barrier to Tomato Spotted Wilt Virus Acquisition by Adult Western Flower ThripsPhytopathology®, 1992
- Analysis of mouthpart movements during feeding of Frankliniella occidentalis (pergande) and F. schultzei trybom (Thysanoptera : Thripidae)International Journal of Insect Morphology and Embryology, 1989
- Structure and function of the mouthparts in larvae ofHaplothrips verbasci (Osborn) (Thysanoptera, Tubulifera, Phlaeothripidae)Journal of Morphology, 1978
- Leishmania in phlebotomid sandflies V. The nature and significance of infections of the pylorus and ileum of the sandfly by leishmaniae of the braziliensis complexProceedings of the Royal Society of London. B. Biological Sciences, 1977