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Adaptation to climate change, and specifically water stress, is one of the most important topics in plant biology. Water stress reduces plant growth and crop yield, and for perennial crop and tree species there is an added consideration; their long-term ability to tolerate and recover from stress. A species’ resilience truly embodies two attributes: (1) the means to maintain productivity over the short term under stress, (2) the long term ability to recovery from periods of severe stress. The ideal for a plant is to maximize both of these attributes. This project will quantify the resilience of various winegrape and forest tree species through elucidating whole plant relationships of the loss and recovery of hydraulic capacity in response to water stress. These experiments will identify particular winegrape and tree species with an increased ability to tolerate and recover from this stress. Finally, these results will be used to model the extent to which water stress will reduce water uptake and gross ecosystem productivity in these ecosystems.
I am a plant ecophysiologist, whose research interest is to study the impact of abiotic stresses on the distribution of perennial plants through physiological drivers. After completing a master’s degree in Biochemistry (Univ. Lille) and Ecology (Univ. Clermont-Ferrand), I performed a doctorate in plant ecophysiology in Clermont-Ferrand, and post-doctorate experiences in Innsbruck (Austria) and Bordeaux (France). I am now working as a permanent researcher in INRA (UMR PIAF Clermont-Ferrand, France). The integrative approach I develop combines different scales and disciplines (physics, bioclimatology, modeling, physiology, molecular biology, genetics). These disciplines converge to predict climate risks on the survival and function of plants, through the production of relevant physiological indexes that will ultimately help growers and foresters in their managing practices in the context of global change.
Charrier G., Burlett R., Gambetta GA, Delzon S, Domec JC, Beaujard F. 2017. Monitoring Xylem Hydraulic Pressure in Woody Plants Bio-protocol. Doi: 10.21769/BioProtoc.2580.
Charrier G.*, Nolf M.*, Leitinger G., Charra-Vaskou K., Tappeiner U., Améglio T., Mayr S., 2017. Freezing in timberline trees: a simple phase shift causes complexity. Plant Physiology. Doi: 101104/pp1601815).
Charrier G., Torres-Ruiz J.M., Badel E., Burlett R., Choat B., Cochard H., Delmas C.E.L., Domec J.C., Jansen S., King A., Lenoir N., Martin-StPaul N., Gambetta G.A., Delzon S., 2017 High resolution X-ray microtomography provides evidence for hydraulic vulnerability segmentation, and lack of refilling under tension in grapevine. Plant Physiology. Doi:10.1104/ pp.16.01079.
Charrier G., Pramsohler M., Charra-Vaskou K., Saudreau M., Améglio T., Neuner G., Mayr S., 2015. Ultrasonic emissions during ice nucleation and propagation in plant xylem. New Phytologist 207, 570-578. Doi: 10.1111/nph.13361.
Charrier G.*, Charra-Vaskou K.*, Kasuga J., Cochard H., Mayr S., Améglio T., 2014. Freeze-thaw stress. Effects of temperature on hydraulic conductivity and ultrasonic activity in ten woody angiosperms. Plant Physiology 164: 992-998. Doi:10.1104/pp.113.228403.
2012 - Silver medal from the French Academy of Agriculture