Proposing an early diagnosis of infected plants by detecting volatile organic compounds is the project in which Stéphane Le Calvé, researcher at the Institute of Chemistry and Processes for Energy, Environment and Health (Icpees – Unistra/CNRS) has been involved since March 2023. And this within the framework of the Joint Laboratory (LabCom)* AnaVOC in collaboration with the company Chromatotec.