In cell, oil is stored in lipid droplet (LD). LD and neutral lipid metabolism is abundantly documented but less is known about LD structure and dynamics in the cell. With this project we will obtain an exhaustive picture of the LD intracellular organization using multimodal approaches (fluorescence and absorbance). Deciphering the structure/function relationship between LD morphology and oil content dynamics will allow improving the quantity and the quality of oil produced by cells.