A5005423746- Plant responses to elevated CO2
- Atmospheric chemistry and aerosols
- Plant Water Relations and Carbon Dynamics
- Plant and animal studies
- Plant biochemistry and biosynthesis
- Forest Insect Ecology and Management
- Indoor Air Quality and Microbial Exposure
- Insect and Pesticide Research
- Insect-Plant Interactions and Control
- Lichen and fungal ecology
- Forest ecology and management
- Essential Oils and Antimicrobial Activity
- Insect Pest Control Strategies
- Plant Parasitism and Resistance
- Allelopathy and phytotoxic interactions
- Advanced Chemical Sensor Technologies
- Climate variability and models
- Soil Carbon and Nitrogen Dynamics
- Air Quality Monitoring and Forecasting
- Geophysics and Gravity Measurements
- Plant Ecology and Soil Science
- Insect Pheromone Research and Control
- Antioxidant Activity and Oxidative Stress
- Atmospheric and Environmental Gas Dynamics
- Groundwater and Watershed Analysis
Centre d'Écologie Fonctionnelle et Évolutive
2016-2025
Centre National de la Recherche Scientifique
2011-2025
Université de Montpellier
2016-2025
École Pratique des Hautes Études
2016-2025
Institut de Recherche pour le Développement
2008-2025
Geological Survey of Finland
2005-2024
Université Paul-Valéry Montpellier
2016-2021
German Cancer Research Center
2012
Heidelberg University
2012
National Research Institute of Rural Engineering, Water and Forests
2008
In a laboratory study, we investigated the monoterpene emissions from Quercus ilex , an evergreen sclerophyllous Mediterranean oak species whose are light dependent. We examined and temperature responses of individual monoterpenes emitted leaves under various conditions, effect heat stress on emissions, emission‐onset during leaf development. Emission rate increased 10‐fold growth, with slight changes in composition. At 30 °C saturating light, emission mature averaged 4·1 nmol m –2 s –1...
Abstract. The capacity for volatile isoprenoid production under standardized environmental conditions at a certain time (ES, the emission factor) is key characteristic in constructing inventories. However, there large variation published ES estimates any given species partly driven by dynamic modifications due to acclimation and stress responses. Here we review additional sources of that are measurement analytical techniques calculation averaging procedures, demonstrate estimations...
Abstract. The rate of constitutive isoprenoid emissions from plants is driven by plant emission capacity under specified environmental conditions (ES, the factor) and responsiveness to instantaneous variations in environment. In models emission, ES has been often considered as intrinsic species-specific constant invariable time space. Here we analyze values field focusing on abiotic stresses, past developmental processes. reviewed studies highlight strong stress-driven, adaptive (previous...
Abstract. In models of plant volatile isoprenoid emissions, the instantaneous compound emission rate typically scales with plant's potential under specified environmental conditions, also called as factor, ES. most widely employed models, algorithms developed by Guenther and colleagues (1991, 1993), variation steady-state is described product ES light temperature response functions. When these are in atmospheric chemistry modeling community, species-specific values parameter defining curves...
Abstract. The effects of water limitations on the emission biogenic volatile organic compounds are not well understood. Experimental approaches studying drought in natural conditions still missing. To address this question, a throughfall displacement experiment was set up forest Quercus ilex, an evergreen Mediterranean oak emitting monoterpenes. Mature trees were exposed 2005 and 2006 either to additional drought, irrigation or (untreated control). In both years, absolute monoterpene rates...
Little is known on aphid-induced emissions of volatile organic compounds (VOCs) from trees and particularly their intraspecific variability in association with resistance traits. We compared VOC five peach cultivars (Prunus persica (L.) Batsch) a wild relative davidiana (Carrière) Franch) that differ level (susceptible/resistant) type (antixenosis, antibiosis) to the green aphid, Myzus persicae (Sulzer). Additionally, kinetics induction response aphids was by mechanical wounding. Qualitative...
Dependence of monoterpenoid emission and fractional composition on stomatal conductance (G(V)) was studied in Mediterranean conifer Pinus pinea, which primarily emits limonene trans-beta-ocimene but also large fractions oxygenated monoterpenoids linalool 1,8-cineole. Strong decreases G(V) attributable to diurnal water stress were accompanied by a significant reduction total rate midday. However, various responded differently the G(V), with rates being unaffected those 1,8-cineole closely...
We investigated growth, leaf monoterpene emission, gas exchange, structure and chemical composition of 1-year-old Quercus ilex L. seedlings grown in ambient (350 μl l−1) elevated (700 CO2 concentrations ([CO2]). Monoterpene emission exchange were determined at constant temperature irradiance (25 °C 1000 μmol m−2 s−1 photosynthetically active radiation) an assay [CO2] 350 or 700 l−1. Measurements made on intact shoots after the end growing season between mid-October mid-February. On average,...
Monoterpene synthase activities were measured in current year and 1-year-old leaves of holm oak (Quercus ilex L.). The monoterpene the strongly changed with leaf development age. Enzyme increased rapidly spring after emergence, reaching maximum values summer, which declined during following winter period. In next recovered old to about one-third previous years showed a similar seasonal variation as young leaves. both age classes pattern enzymatic formation was stable alpha-pinene (33%),...
Foliage of Quercus ilex L. (holm oak), a widespread Mediterranean species, constitutively emits large quantities complex genotype-dependent mixture volatile organic compounds (VOCs). During mass outbreak gypsy moth (Lymantria dispar L.) in southern France, we examined the effects feeding on VOC production from whole apices and single leaves Q. ilex. Feeding induced emission new VOCs at rates up to 240 ng m(-2) s(-1) (16% total release), which mainly consisted sesquiterpenes, homoterpene...
[1] The seasonality of vegetation, i.e., developmental stages and phenological processes, affects the emission volatile organic compounds (VOCs). Despite potential significance, contributions to VOC quality quantity are not well understood therefore often ignored in simulations. We investigated patterns young mature leaves several Mediterranean plant species relation their physiological changes during growing period estimated Es. Foliar emissions isoprenoids oxygenated VOCs like methanol...
Abstract. Light and temperature are known to be the most important environmental factors controlling biogenic volatile organic compound (BVOC) emissions from plants, but little is about their interdependencies especially for BVOCs other than isoprene. We studied light responses at different temperatures levels of foliar BVOC emissions, photosynthesis chlorophyll fluorescence on Quercus coccifera, an evergreen oak widespread in Mediterranean shrublands. More 50 were detected Q. coccifera...
Abstract. Emission inventories defining regional and global biogenic volatile organic compounds (VOC) emission strengths are needed to determine the impact of VOC on atmospheric chemistry (oxidative capacity) physics (secondary aerosol formation effects). The aim this work was contribute with measurements tree species from poorly described tropical vegetation in direct comparison quite well-investigated, highly heterogeneous emissions Mediterranean vegetation. sixteen plant area were...