Exogenous application of methyl jasmonate increases emissions of volatile organic compounds in Pyrenean Oak Trees, Quercus pyrenaica

0551072 - BC 2023 RIV CH eng J - Článek v odborném periodiku
Amo, L. - Mrázová, Anna - Saavedra, I. - Sam, Kateřina
Exogenous application of methyl jasmonate increases emissions of volatile organic compounds in Pyrenean Oak Trees, Quercus pyrenaica.
Biology. Roč. 11, č. 1 (2022), č. článku 84. E-ISSN 2079-7737
Grant CEP: GA ČR(CZ) GX19-28126X
GRANT EU: European Commission(XE) 805189 - BABE
Grant ostatní: GA JU(CZ) 04-048/2019/P
Institucionální podpora: RVO:60077344
Klíčová slova: avian olfaction * foraging * herbivore-induced plant volatiles
Obor OECD: Plant sciences, botany
Impakt faktor: 4.2, rok: 2022
Způsob publikování: Open access
https://www.mdpi.com/2079-7737/11/1/84/pdf

The tri-trophic interactions between plants, insects, and insect predators and parasitoids are often mediated by chemical cues. The attraction to herbivore-induced Plant Volatiles (HIPVs) has been well documented for arthropod predators and parasitoids, and more recently for insectivorous birds. The attraction to plant volatiles induced by the exogenous application of methyl
jasmonate (MeJA), a phytohormone typically produced in response to an attack of chewing herbivores, has provided controversial results both in arthropod and avian predators. In this study, we examined whether potential differences in the composition of bouquets of volatiles produced by herbivore-induced and MeJA-treated Pyrenean oak trees (Quercus pyrenaica) were related to differential avian attraction, as results from a previous study suggested. Results showed that the overall emission of volatiles produced by MeJA-treated and herbivore-induced trees did not differ, and were higher than emissions of Control trees, although MeJA treatment showed a more significant reaction and released several specific compounds in contrast to herbivore-induced trees. These slight yet significant differences in the volatile composition may explain why avian predators were not so attracted to MeJA-treated trees, as observed in a previous study in this plant-herbivore system. Unfortunately, the lack of avian visits to the experimental trees in the current study did not allow us to confirm this result and points out the need to perform more robust predator studies.
Trvalý link: https://hdl.handle.net/11104/0338961