Biochemical studies on sporulation in blue-green algae I. Glycogen accumulation

Glycogen accumulation in vegetative cells of Anabaena sp. is demonstrated to be a light-dependent process. No glycogen accumulation is found in dark or in cultures supplemented with 10^?5 M DCMU in light. Large quantities of glycogen acccumulate in cells undergoing sporulation and the amount increased with the onset of maturation of spores.