Overproduction of the Flv3B flavodiiron, enhances the photobiological hydrogen production by the nitrogen-fixing cyanobacterium Nostoc PCC 7120

Table 1 Nitrogenase activity of the cyanobacterial strains studied

Strain measure	Wild type	WT/patB-flv3B
Exponential growth rate per day (BG110)	0.155	0.155
Chla content (mg Chla/mL)	4.49	8.9
Nitrogenase activity (nmol N₂/mg Chla/h)	17.3	11.2
sd on nitrogenase activity	0.001	0.00,025

Two independent cultures of each strain were grown as explained in the Materials and methods section. For each strain, the nitrogenase activity values presented in this table were registered at T = 4 h of the light phase
Chla chlorophyll a, sd standard deviation

ISSN: 1475-2859