Mostrar el registro sencillo del ítem

resumen

Resumen
1. Natural grassland ecosystems are increasingly threatened by excessive loadings of nutrients and by the presence of species bred for high productivity. By manipulating grazing regimes and nutrient availability, agricultural practices facilitate the establishment and spread of certain forage plant species outside managed landscapes, challenging local biodiversity. The ecological success of some species in the invaded range sometimes seems to be [ver mas...]
dc.contributor.authorGraff, Pamela
dc.contributor.authorGundel, Pedro Emilio
dc.contributor.authorSalvat, Adriana Elisabeth
dc.contributor.authorCristos, Diego Sebastian
dc.contributor.authorChaneton, Enrique J.
dc.date.accessioned2020-05-18T19:25:28Z
dc.date.available2020-05-18T19:25:28Z
dc.date.issued2020-02-04
dc.identifier.issn1365-2745
dc.identifier.otherhttps://doi.org/10.1111/1365-2745.13371
dc.identifier.urihttp://hdl.handle.net/20.500.12123/7268
dc.identifier.urihttps://besjournals.onlinelibrary.wiley.com/doi/abs/10.1111/1365-2745.13371
dc.description.abstract1. Natural grassland ecosystems are increasingly threatened by excessive loadings of nutrients and by the presence of species bred for high productivity. By manipulating grazing regimes and nutrient availability, agricultural practices facilitate the establishment and spread of certain forage plant species outside managed landscapes, challenging local biodiversity. The ecological success of some species in the invaded range sometimes seems to be associated with the symbiosis with foliar fungal endophytes. Symbiotic fungi may increase the competitiveness of host species, but also the resistance to herbivory through the production of toxic secondary compounds such as alkaloids. While progress has been made in understanding how soil nutrients modulate other benefits offered by fungal endophytes to plants (e.g. stress tolerance, competitive ability, etc), the consequences for a higher trophic level (i.e. herbivores) and the potential feedbacks on plant invasion have not been explored yet. 2. We explored the relative and interactive importance of soil nitrogen (N) and phosphorus (P) in modulating the interaction of the invasive grass tall fescue—associated with fungal endophytes—and native herbivores in a natural grassland. We hypothesized that N and P nutrients modulate differentially leaf quality traits, namely nutritional value and fungal alkaloid contents, determining the level of damage by native insect herbivores on the exotic tall fescue. 3. We found that only the addition of P significantly increased native caterpillar density in the field, which corresponded to a concomitant increase in leaf damage. In contrast to expectations, the concentration of the alkaloid ergovaline in leaves was not strongly related to N. It was the level of soil P which dictated the concentration of the element (P) in the leaves and reduced the level of defence against herbivores in this endophyte-symbiotic species. Then, herbivore performance increased, and plants were more prone to be attacked. 4. Synthesis. Our study indicates a strong control of soil P fertility on the triple interaction among plants, fungal endophytes and native herbivores. This highlights the potential role of increased soil nutrients on the invasion spread of endophytesymbiotic forage plants in natural grasslands.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherWiley
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_AR
dc.sourceJournal of Ecology 00: 1–13 (2020)es_AR
dc.subjectCaterpillarseng
dc.subjectOruga (larva)es_AR
dc.subjectNitrogeneng
dc.subjectNitrógenoes_AR
dc.subjectPhosphoruseng
dc.subjectFósforoes_AR
dc.subjectFestuca arundinaceaes_AR
dc.subject.otherErgovalineeng
dc.subject.otherErgovalinaes_AR
dc.subject.otherParacles vulpinaes_AR
dc.subject.otherPolilla Paracles vulpinaes_AR
dc.subject.otherInvasión de plantases_AR
dc.subject.otherPlant–herbivore interactioneng
dc.subject.otherPlanta -herbívoro Interacciónes_AR
dc.subject.otherFestuca Alta
dc.titleProtection offered by leaf fungal endophytes to an invasive species against native herbivores depends on soil nutrientses_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.filFil: Graff, Pamela. Universidad de Buenos Aires. Facultad de Agronomía, Departamento de Recursos Naturales y Ambiente. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.es_AR
dc.description.filFil: Gundel, Pedro E. Universidad de Buenos Aires. Facultad de Agronomía, Departamento de Recursos Naturales y Ambiente. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.es_AR
dc.description.filFil: Salvat, Adriana Elisabeth. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiología. Laboratorio de Toxicología. Área de Patología; Argentina.es_AR
dc.description.filFil: Cristos, Diego Sebastian. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto Tecnología de Alimentos; Argentina. Universidad de Buenos Aires (UBA). Facultad de Ciencias Exactas y Naturales. Departamento de Química Biológica. Instituto de Química Biológica; Argentina.es_AR
dc.description.filFil: Chaneton, Enrique J. Universidad de Buenos Aires. Facultad de Agronomía, Departamento de Recursos Naturales y Ambiente. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
dc.subtypecientifico


Ficheros en el ítem

Thumbnail

Este ítem aparece en la(s) siguiente(s) colección(ones)

common

Mostrar el registro sencillo del ítem