The formation and consumption of lipid droplets in the zygote and germinated cells ofClosterium ehrenbergii

The formation and consumption of lipid droplets was observed with an electron microscope in the zygote and the germinated cells of the green alga,Closterium ehrenbergii. The lipid droplets were formed in lysosomal vesicles during zygote maturation following conjugation. In the germinated cells, they were enclosed in ERs and gradually consumed in them. This consumption occurred in the cells at the early stages of expansion. The derivative substances may possibly be used for cell surface expansion.