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Article Dans Une Revue Proceedings of the Royal Society B: Biological Sciences Année : 2021

Risk of herbivory negatively correlates with the diversity of volatile emissions involved in plant communication

Patrick Grof-Tisza
Richard Karban
  • Fonction : Auteur
Muhammad Usman Rasheed
James Blande
  • Fonction : Auteur

Résumé

Plant-to-plant volatile-mediated communication and subsequent induced resistance to insect herbivores is common. Less clear is the adaptive significance of these interactions; what selective mechanisms favour plant communication and what conditions allow individuals to benefit by both emitting and responding to cues? We explored the predictions of two non-exclusive hypotheses to explain why plants might emit cues, the kin selection hypothesis (KSH) and the mutual benefit hypothesis (MBH). We examined 15 populations of sagebrush that experience a range of naturally occurring herbivory along a 300 km latitudinal transect. As predicted by the KSH, we found several uncommon chemotypes with some chemotypes occurring only within a single population. Consistent with the MBH, chemotypic diversity was negatively correlated with herbivore pressure; sites with higher levels of herbivory were associated with a few common cues broadly recognized by most individuals. These cues varied among different populations. Our results are similar to those reported for anti-predator signalling in vertebrates.

Dates et versions

hal-04440678 , version 1 (06-02-2024)

Identifiants

Citer

Patrick Grof-Tisza, Richard Karban, Muhammad Usman Rasheed, Amélie Saunier, James Blande. Risk of herbivory negatively correlates with the diversity of volatile emissions involved in plant communication. Proceedings of the Royal Society B: Biological Sciences, 2021, 288 (1961), pp.108256. ⟨10.1098/rspb.2021.1790⟩. ⟨hal-04440678⟩
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