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Consortium of Swiss Academic Libraries

Ecology and Evolution of Soil Nematode Chemotaxis

Rasmann, Sergio ; Ali, Jared ; Helder, Johannes ; van der Putten, Wim

In: Journal of Chemical Ecology, 2012, vol. 38, no. 6, p. 615-628

Université de Neuchâtel

Earthworms affect plant growth and resistance against herbivores : A meta-analysis

Xiao, Zhenggao ; Wang, Xie ; Koricheva, Julia ; Kergunteuil, Alan ; Le Bayon, Renée-Claire ; Liu, Manqiang ; Hu, Feng ; Rasmann, Sergio

In: Functional Ecology, 2018, vol. 32, no. 1, p. 150-160

1. Subterranean detritivores such as earthworms can increase soil nutrient availability through their burrowing and casting activities. A number of recent studies have explored whether these changes caused by earthworms may in turn affect plant performance and resistance to herbivores, but no formal synthesis of this literature has been conducted to date. 2. We tested for the effects of...

Université de Fribourg

Community‐level plant palatability increases with elevation as insect herbivore abundance declines

Descombes, Patrice ; Marchon, Jérémy ; Pradervand, Jean-Nicolas ; Bilat, Julia ; Guisan, Antoine ; Rasmann, Sergio ; Pellissier, Loïc

In: Journal of Ecology, 2017, vol. 105, no. 1, p. 142–151

Plants protect themselves against herbivore attacks through a myriad of physical structures and toxic secondary metabolites. Together with abiotic factors, herbivores are expected to modulate plant defence strategies within plant assemblages. Because the abundance of insect herbivore decreases in colder environments, the palatability of plants in communities at higher elevation should shift...

Université de Fribourg

Differential phenotypic and genetic expression of defence compounds in a plant–herbivore interaction along elevation

Salgado, Ana L. ; Suchan, Tomasz ; Pellissier, Loïc ; Rasmann, Sergio ; Ducrest, Anne-Lyse ; Alvarez, Nadir

In: Royal Society Open Science, 2016, vol. 3, no. 9, p. 160226

Elevation gradients impose large differences in abiotic and biotic conditions over short distances, in turn, likely driving differences in gene expression more than would genetic variation per se, as natural selection and drift are less likely to fix alleles at such a narrow spatial scale. As elevation increases, the pressure exerted on plants by herbivores and on arthropod herbivores by...

Université de Fribourg

High elevation Plantago lanceolata plants are less resistant to herbivory than their low elevation conspecifics: is it just temperature?

Pellissier, Loïc ; Roger, Aurélien ; Bilat, Julia ; Rasmann, Sergio

In: Ecography, 2014, p. -

Traits that mediate species interactions are evolutionarily shaped by biotic and abiotic drivers, yet we know relatively little about the relative importance of these factors. Herbivore pressure, along with resource availability and ‘third-party’ mutualists, are hypothesized to play a major role in the evolution of plant defence traits. Here, we used the model system Plantago lanceolata,...

Université de Fribourg

Differential allocation and deployment of direct and indirect defences by Vicia sepium along elevation gradients

Rasmann, Sergio ; Buri, Aline ; Gallot-Lavallée, Marie ; Joaquim, Jessica ; Purcell, Jessica ; Pellissier, Loïc

In: Journal of Ecology, 2014, p. -

Dissecting drivers of plant defence investment remains central for understanding the assemblage of communities across different habitats. There is increasing evidence that direct defence strategies against herbivores, including secondary metabolites production, differ along ecological gradients in response to variation in biotic and abiotic conditions. In contrast, intraspecific variation in...

Université de Neuchâtel

Simultaneous feeding by aboveground and belowground herbivores attenuates plant-mediated attraction of their respective natural enemies

Rasmann, Sergio ; Turlings, Ted C. J.

In: Oikos, 2007, vol. 10, no. 10, p. 926-936

Herbivore-damaged plants emit volatile organic compounds that attract natural enemies of the herbivores. This form of indirect plant defence occurs aboveground as well as belowground, but it remains unclear how simultaneous feeding by different herbivores attacking leaves and roots may affect the production of the respective defence signals. We employed a setup that combines trapping of volatile...