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

Sammanfattning

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.

Nyckelord

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

SLU författare

• Vucetic, Andja

  • Institutionen för växtproduktionsekologi, Sveriges lantbruksuniversitet
    
  • Универзитет у Београду (Univerzitet u Beogradu)

• Dahlin, Iris

  • Institutionen för ekologi, Sveriges lantbruksuniversitet
    

• Glinwood, Robert

  • Institutionen för växtproduktionsekologi, Sveriges lantbruksuniversitet
    

• Webster, Ben

  • Institutionen för ekologi, Sveriges lantbruksuniversitet
    

• Ninkovic, Velemir

  • Institutionen för växtproduktionsekologi, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Ekologi
Zoologi
Botanik

Publikationens identifierare

• DOI: https://doi.org/10.4161/psb.29517

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/66064