Journal
ARTHROPOD-PLANT INTERACTIONS
Volume 5, Issue 1, Pages 71-80Publisher
SPRINGER
DOI: 10.1007/s11829-010-9117-0
Keywords
Indirect defence; Induced resistance; Wound response; Jasmonic acid
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Funding
- Research Foundation-Flanders (FWO-Vlaanderen)
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The anthocorid predator Orius laevigatus is widely used as biological control agent of thrips pests, including the western flower thrips Frankliniella occidentalis. In the current study, it was shown that O. laevigatus adults can increase plant resistance to feeding damage of F. occidentalis on tomato plants. The predator elicits a jasmonic acid (JA) mediated wound response during endophytic oviposition, resulting in reduced thrips feeding. A strong accumulation of H2O2, a molecule involved in different parts of the wound response, in leaf tissue surrounding the predator eggs or oviposition puncture sites was observed. Infestation of tomato plants with adult predators led to the upregulation of three JA regulated wound responsive genes: the precursor prosystemin, the jasmonic acid biosynthesis enzyme allene oxide synthase and the defence protein proteinase inhibitor I. Likewise, the presence of adults caused accumulation of proteinase inhibitor II, a principal marker for the wound response.
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