Pest Management Science (2020) 76, 561-567

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Sarra Bouagga, Alberto Urbaneja, Laura Depalo, Luís Rubio and Meritxell Pérez-Hedo (2020)
Zoophytophagous predator-induced defences restrict accumulation of the tomato spotted wilt virus
Pest Management Science 76 (2), 561-567
Abstract:
BACKGROUND
The use of zoophytophagous predators in protected crops has been widely adopted to manage pests in southern Europe. We hypothesized that plant defence responses would be induced by zoophytophagous predators and this induction could affect plant virus occurrence; the phytophagy of these predators induces plant defences similarly to that of viral infection. Therefore, we evaluated whether or not mirid predator-activated plant defences limited the accumulation of Tomato Spotted Wilt Virus (TSWV) in mechanically infected sweet pepper.
RESULTS
Our results revealed TSWV accumulation in mirid-punctured plants to be significantly lower than in intact plants. This is most likely associated with the upregulation of the jasmonate acid pathway triggered by mirid phytophagy.
CONCLUSION
Activation of induced defences by mirid predators has been demonstrated for the first time to limit the accumulation of TSWV in sweet pepper. This novel approach can offer new control strategies for the management of plant diseases.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Alberto Urbaneja, Laura Depalo, Luis Rubio

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Tomato spotted wilt virus