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Last update: May 2021

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ODORSCAPE

Edito

Why to study the ODORSCAPE ?

Welcome on the web site of the ANR project ODORSCAPE

ODORSCAPE is a pluridisciplinary research project granted by the French ANR for 4 years, starting in 2015. Our objectives are to study the effects of factors of climate change on the production and release of volatile organic compounds by plants and to analyze their impact on olfactory communication in a moth.

Schema-Odorscape

The volatile organic compounds produced by terrestrial plants result in a rich olfactory landscape (the odorscape) from which insects extract the information they use to identify vital resource for feeding or reproduction. The insect olfactory system has evolved to enable the specific recognition of a host-plant or a mating partner in a intense and complex chemical word. Thus, the interactions between herbivorous insects and plant communities are modulated by the emission and perception of olfactory signals. However, the plant emission of volatile organic compounds are highly variable according to environmental conditions and the odorscape composition fluctuate daily or seasonally. The main factors of global change, increases in atmospheric ratios of CO2 and ozone, temperature increase and drought, alter significantly the release of volatile organic compounds by plants. This particular effect of global change has been studied but it is however difficult to predict its consequences on olfactory communication between insects or between herbivorous insects and plants. The ODORSCAPE project aims to evaluate the impacts of global change on odorscape compositions and the effects on insect olfactory communication.