Mr. Lucas LEVERNE

Lucas is PhD student in biology at CEA Paris-Saclay, under the direction of Anja Krieger-Liszkay at the I2BC, and of Fabienne Maignan at LSCE. He is working on the effect of abiotic stress on photosynthesis, in particular on drought stress and high temperatures. He works on one hand of the regulation of photosynthetic electron transport and protection against high light stress at a molecular scale. Until now, he performed mostly chlorophyll fluorescence measurements to monitor the effect of the two stress conditions on wild-type plants and on mutants affected at certain regulation mechanisms. The aim is to collect a data set that allows better description of the so-called non-photochemical quenching (NPQ) of chlorophyll fluorescence. At LSCE, he will exploit these data to calibrate the ORCHIDEE land surface model, which can use satellite estimates of ecosystem fluorescence to better simulate the continental gross primary production at large scale. The aim is to better define the NPQ parameter that is one of the variables of the model.