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Forskningsartikel2014Vetenskapligt granskadÖppen tillgång

Volatile interaction between undamaged plants affects tritrophic interactions through changed plant volatile emission

Vucetic, Andja; Dahlin, Iris; Petrović-Obradović, Olivera; Glinwood, Robert; Webster, Ben; Ninkovic, Velemir


Volatile interactions between unattacked plants can lead to changes in their volatile emissions. Exposure of potato plants to onion plant volatiles results in increased emission of 2 terpenoids, (E)-nerolidol and TMTT. We investigated whether this is detectable by the ladybird Coccinella septempunctata. The odor of onion-exposed potato was significantly more attractive to ladybirds than that of unexposed potato. Further, a synthetic blend mimicking the volatile profile of onion-exposed potato was more attractive than a blend mimicking that of unexposed potato. When presented individually, TMTT was attractive to ladybirds whereas (E)-nerolidol was repellent. Volatile exchange between unattacked plants and the consequent increased attractiveness for ladybirds may be a mechanism that contributes to the increased abundance of natural enemies in complex plant habitats.


plant–plant communication; aphids; potato; onion; volatiles; (E)-nerolidol; TMTT; ladybird; Coccinella septempunctata; natural enemies

Publicerad i

Plant Signaling and Behavior
2014, Volym: 9, nummer: 8, artikelnummer: e29517