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Article Dans Une Revue Functional Ecology Année : 2023

Plant geographic distribution influences chemical defenses in native and introduced Plantago lanceolata populations

Pamela Medina-van Berkum
Eric Schmöckel
  • Fonction : Auteur
Natalia Carrasco-Farias
  • Fonction : Auteur
Jane Catford
  • Fonction : Auteur
Reinart Feldmann
  • Fonction : Auteur
Karin Groten
  • Fonction : Auteur
Hugh Henry
  • Fonction : Auteur
Anna Lampei Bucharova
  • Fonction : Auteur
Sabine Hänniger
  • Fonction : Auteur
Justin Luong
Julia Meis
  • Fonction : Auteur
Vincensius S.P. Oetama
  • Fonction : Auteur
Meelis Pärtel
  • Fonction : Auteur
Sally Power
Jesus Villellas
  • Fonction : Auteur
Erik Welk
  • Fonction : Auteur
Astrid Wingler
Beate Rothe
  • Fonction : Auteur
Jonathan Gershenzon
Michael Reichelt
Christiane Roscher
  • Fonction : Auteur
Sybille Unsicker

Résumé

Abstract Plants growing outside their native range may be confronted by new regimes of herbivory, but how this affects plant chemical defense profiles has rarely been studied. Using Plantago lanceolata as a model species, we investigated whether introduced populations show significant differences from native populations in several growth and chemical defense traits. Plantago lanceolata (ribwort plantain) is an herbaceous plant species native to Europe and Western Asia that has been introduced to numerous countries worldwide. We sampled seeds from nine native and ten introduced populations that covered a broad geographic and environmental range and performed a common garden experiment in a greenhouse, in which we infested half of the plants in each population with caterpillars of the generalist herbivore Spodoptera littoralis . We then measured size-related and resource-allocation traits as well as the levels of constitutive and induced chemical defense compounds in roots and shoots of P. lanceolata . When we considered the environmental characteristics of the site of origin, our results revealed that populations from introduced ranges were characterized by an increase of chemical defense compounds without compromising plant biomass. The concentrations of iridoid glycosides and verbascoside, the major anti-herbivore defense compounds of P. lanceolata , were higher in introduced populations than in native populations. In addition, introduced populations exhibited greater rates of herbivore-induced volatile organic compound emission and diversity, and similar chemical diversity based on untargeted analyses of leaf methanol extracts. In general, the geographic origin of the populations had a significant influence on morphological and chemical plant traits, suggesting that P. lanceolata populations are not only adapted to different environments in their native range, but also in their introduced range.

Dates et versions

hal-04639801 , version 1 (09-07-2024)

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Citer

Pamela Medina-van Berkum, Eric Schmöckel, Armin Bischoff, Natalia Carrasco-Farias, Jane Catford, et al.. Plant geographic distribution influences chemical defenses in native and introduced Plantago lanceolata populations. Functional Ecology, 2023, ⟨10.1101/2023.06.05.543708⟩. ⟨hal-04639801⟩
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