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dc.contributor.authorBenevenuto, Rafael Fonseca
dc.contributor.authorSeldal, Tarald
dc.contributor.authorPolashock, James
dc.contributor.authorMoe, Stein Ragnar
dc.contributor.authorRodriguez-Saona, Cesar
dc.contributor.authorGillespie, Mark Andrew Kusk
dc.contributor.authorHegland, Stein Joar
dc.identifier.citationBenevenuto, R. F., Seldal, T., Polashock, J., Moe, S. R., Rodriguez‐Saona, C., Gillespie, M. A. K. & Hegland, S. J. (2020). Molecular and ecological plant defense responses along an elevational gradient in a boreal ecosystem. Ecology and Evolution, 10(5), 2478-2491.en_US
dc.description.abstractPlants have the capacity to alter their phenotype in response to environmental factors, such as herbivory, a phenomenon called phenotypic plasticity. However, little is known on how plant responses to herbivory are modulated by environmental variation along ecological gradients. To investigate this question, we used bilberry (Vaccinium myrtillus L.) plants and an experimental treatment to induce plant defenses (i.e., application of methyl jasmonate; MeJA), to observe ecological responses and gene expression changes along an elevational gradient in a boreal system in western Norway. The gradient included optimal growing conditions for bilberry in this region (ca. 500 m a.s.l.), and the plant's range limits at high (ca. 900 m a.s.l.) and low (100 m a.s.l.) elevations. Across all altitudinal sites, MeJA‐treated plants allocated more resources to herbivory resistance while reducing growth and reproduction than control plants, but this response was more pronounced at the lowest elevation. High‐elevation plants growing under less herbivory pressure but more resource‐limiting conditions exhibited consistently high expression levels of defense genes in both MeJA‐treated and untreated plants at all times, suggesting a constant state of “alert.” These results suggest that plant defense responses at both the molecular and ecological levels are modulated by the combination of climate and herbivory pressure, such that plants under different environmental conditions differentially direct the resources available to specific antiherbivore strategies. Our findings are important for understanding the complex impact of future climate changes on plant–herbivore interactions, as this is a major driver of ecosystem functioning and biodiversity.en_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.subjectclimate changeen_US
dc.subjectconstitutive and induced defensesen_US
dc.subjectgene expressionen_US
dc.subjectplant-herbivore interactionsen_US
dc.titleMolecular and ecological plant defense responses along an elevational gradient in a boreal ecosystemen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.rights.holder© 2020 The Authors.en_US
dc.subject.nsiVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488en_US
dc.source.journalEcology and Evolutionen_US
dc.relation.projectHatch Project: NJ08140 to CR-Sen_US
dc.relation.projectNorges forskningsråd: 204403en_US

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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal