Climate change is aggravating the impact of droughts — one of the factors that only affect plant physiology — on all plant ecosystems worldwide. Although new tools have been developed to detect and assess drought stress in plants — transcriptomic or metabolomic technologies, etc. — they are still difficult to apply in natural ecosystems, especially in remote areas and developing countries.Climate change is aggravating the impact of droughts — one of the factors that only affect plant physiology — on all plant ecosystems worldwide. Although new tools have been developed to detect and assess drought stress in plants — transcriptomic or metabolomic technologies, etc. — they are still difficult to apply in natural ecosystems, especially in remote areas and developing countries.