LARBAT , Romain

National audience

Density- and trait-mediated indirect interactions (DMIIs and TMIIs respectively) are important drivers of community dynamics but how plant nutrients (bottom-up effects) affect the magnitude of such indirect interactions has been scarcely addressed. To assess the impact of bottom-up forces on indirect interactions, we carried out laboratory and...

Plant-insect interactions are strongly modified by environmental factors. This study evaluates the influence of nitrogen fertilisation on the tomato (Solanum lycopersicum L.) cv. Santa clara and the leafminer (Tuta absoluta (Meyrick), Lepidoptera: Gelechiidae). Greenhouse-grown tomato plants were fed hydroponically on a complete nutrient...

The leafminer Tuta absoluta (Meyrick) is a major pest of the tomato crop and its development rate is known to decline when nitrogen availability for crop growth is limited. Because N limitation reduces plant primary metabolism but enhances secondary metabolism, one can infer that the slow larval development arises from lower leaf nutritive...

Volatile organic compounds (VOCs) are of first importance in plant defenses since they alter host-plant location by herbivore insects. The worldwide distribution of tomato offers to explore the ecological diversity of defensive VOCs produced by plants supporting a large range of local adaptations. In this study, first, we analyzed the diversity...

Tomato plants are attacked by a variety of herbivore pests and among them, the leafminer Tuta absoluta, which is currently a major threat to global tomato production. Although the commercial tomato is susceptible to T. absoluta attacks, a better understanding of the defensive plant responses to this pest will help in defining plant resistance...

Soil abiotic factors and plant traits are able to trigger bottom-up effects along the tri-trophic plant–herbivore–natural enemy interactions. The consequences could be useful for controlling the insect herbivores. The South American tomato pinworm, Tuta absoluta Meyrick (Lepidoptera: Gelechiidae), a devastating invasive leaf-mining pest on...

International audience

Événement(s) lié(s) : - Journée ADALEP

Since volatile organic compounds (VOCs) shape plant defenses against pests, ecologists strive to understand their sources of variation. The worldwide distribution of tomato offers an ideal system to explore the ecological diversity of VOCs produced by plants supporting a large range of local adaptations. In this study, we analyzed the diversity...

Since volatile organic compounds (VOCs) shape plant defenses against pests, ecologists strive to understandtheir sources of variation. The worldwide distribution of tomato offers an ideal system to explore the ecological diversity of VOCs produced by plants supporting a large range of local adaptations. In this study, we analyzed the diversity...