Using the moss Physcomitrella patens as a model organism and a fluorescence confocal laser microscope as a tool, the time-resolved structural changes of thylakoid membranes during illumination were observed.

Iwai, M., Yokono, M., Nakano, A. "Visualizing structural dynamics of thylakoid membranes" Scientific Reports, 2014, doi: 10.1038/srep03768