Synechococcus sp. strain PCC 7002 which combines a wide salinity tolerance and high glycogen production cap- acity could become an important carbon source for the development of biofuels and bio-based chemicals produc- tion. The glycogen productivity of Synechococcus sp. strain PCC 7002 would be further enhanced through genetic en- gineering or metabolic engineering in the next step, which could accelerate the glycogen accumulation rate under ni- trogen depletion.