• DOI:10.1111/ele.12115
• Corpus ID: 5035645

Underground signals carried through common mycelial networks warn neighbouring plants of aphid attack.

@article{Babikova2013UndergroundSC,
  title={Underground signals carried through common mycelial networks warn neighbouring plants of aphid attack.},
  author={Zděnka Babíková and Lucy Gilbert and Toby J. A. Bruce and Michael A. Birkett and John C. Caulfield and Christine Woodcock and John Anthony Pickett and David Johnson},
  journal={Ecology letters},
  year={2013},
  volume={16 7},
  pages={
          835-43
        }
}

• Zděnka Babíková, L. Gilbert, +5 authors David Johnson
• Published 1 July 2013
• Environmental Science
• Ecology letters

The roots of most land plants are colonised by mycorrhizal fungi that provide mineral nutrients in exchange for carbon. Here, we show that mycorrhizal mycelia can also act as a conduit for signalling between plants, acting as an early warning system for herbivore attack. Insect herbivory causes systemic changes in the production of plant volatiles, particularly methyl salicylate, making bean plants, Vicia faba, repellent to aphids but attractive to aphid enemies such as parasitoids. We demonstrate that these effects can also occur in aphid-free plants but only when they are connected to aphid-infested plants via a common mycorrhizal mycelial network. This underground messaging system allows neighbouring plants to invoke herbivore defences before attack. Our findings demonstrate that common mycorrhizal mycelial networks can determine the outcome of multitrophic interactions by communicating information on herbivore attack between plants, thereby influencing the behaviour of both herbivores and their natural enemies.