Difference between revisions of "Viruses (2016) 8 (8 - 225)"
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{{Publication | {{Publication | ||
|Publication authors=[[Alberto Fereres]], [[Maria Fernanda Gomes Villalba Penaflor|Maria Fernanda G.V. Peñaflor]], Carla F. Favaro, Kamila E.X. Azevedo, Carolina H. Landi, Nathalie K.P. Maluta, José Mauricio S. Bento and Joao R.S. Lopes | |Publication authors=[[Alberto Fereres]], [[Maria Fernanda Gomes Villalba Penaflor|Maria Fernanda G.V. Peñaflor]], Carla F. Favaro, Kamila E.X. Azevedo, Carolina H. Landi, Nathalie K.P. Maluta, José Mauricio S. Bento and Joao R.S. Lopes | ||
| − | |Author Page=Alberto Fereres, Maria Fernanda Gomes Villalba Penaflor,, João Roberto Spotti Lopes | + | |Author Page=Alberto Fereres, Maria Fernanda Gomes Villalba Penaflor,, João Roberto Spotti Lopes, Nathalie Kristine Prado Maluta |
|Publication date=2016 | |Publication date=2016 | ||
|dc:title=Tomato infection by whitefly-transmitted circulative and non-circulative viruses induce contrasting changes in plant volatiles and vector behaviour | |dc:title=Tomato infection by whitefly-transmitted circulative and non-circulative viruses induce contrasting changes in plant volatiles and vector behaviour | ||
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}} | }} | ||
{{Pest record | {{Pest record | ||
| − | |Pest=Bemisia tabaci biotype | + | |Pest=Bemisia tabaci biotype MEAM1 |
|Quarantined=No | |Quarantined=No | ||
}} | }} | ||
Latest revision as of 18:09, 7 August 2019
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Tomato infection by whitefly-transmitted circulative and non-circulative viruses induce contrasting changes in plant volatiles and vector behaviour
Viruses 8 (8 - 225)
Abstract: Virus infection frequently modifies plant phenotypes, leading to changes in behaviour and performance of their insect vectors in a way that transmission is enhanced, although this may not always be the case. Here, we investigated Bemisia tabaci response to tomato plants infected by Tomato chlorosis virus (ToCV), a non-circulative-transmitted crinivirus, and Tomato severe rugose virus (ToSRV), a circulative-transmitted begomovirus. Moreover, we examined the role of visual and olfactory cues in host plant selection by both viruliferous and non-viruliferous B. tabaci. Visual cues alone were assessed as targets for whitefly landing by placing leaves underneath a Plexiglas plate. A dual-choice arena was used to assess whitefly response to virus-infected and mock-inoculated tomato leaves under light and dark conditions. Thereafter, we tested the whitefly response to volatiles using an active air-flow Y-tube olfactometer, and chemically characterized the blends using gas chromatography coupled to mass spectrometry. Visual stimuli tests showed that whiteflies, irrespective of their infectious status, always preferred to land on virus-infected rather than on mock-inoculated leaves. Furthermore, whiteflies had no preference for either virus-infected or mock-inoculated leaves under dark conditions, but preferred virus-infected leaves in the presence of light. ToSRV-infection promoted a sharp decline in the concentration of some tomato volatiles, while an increase in the emission of some terpenes after ToCV infection was found. ToSRV-viruliferous whiteflies preferred volatiles emitted from mock-inoculated plants, a conducive behaviour to enhance virus spread, while volatiles from ToCV-infected plants were avoided by non-viruliferous whiteflies, a behaviour that is likely detrimental to the secondary spread of the virus. In conclusion, the circulative persistent begomovirus, ToSRV, seems to have evolved together with its vector B. tabaci to optimise its own spread. However, this type of virus-induced manipulation of vector behaviour was not observed for the semi persistent crinivirus, ToCV, which is not specifically transmitted by B. tabaci and has a much less intimate virus-vector relationship.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: English)
Link to article at publishers website
Database assignments for author(s): Alberto Fereres, Maria Fernanda Gomes Villalba Penaflor, João Roberto Spotti Lopes, Nathalie Kristine Prado Maluta
Research topic(s) for pests/diseases/weeds:
transmission/dispersal of plant diseases
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant. |
|---|---|---|---|---|
| Bemisia tabaci biotype MEAM1 | ||||
| Tomato chlorosis virus | ||||
| Tomato severe rugose virus |
