Improving Marine Algae for Bioenergy 285
Fig. 1. (A) Schematic view of hydrogen production mechanisms in green algae, (B) non-diazotrophic cyanobacteria, and
(C) and heterocyst-forming cyanobacteria. The electron flux is indicated with dashed arrows. PSI, photosystem I; PSII,
photosystem II; PQ, plastoquinone pool; cytb6f, cytochrome b6f; Pc, plastocyanine; Fd, ferredoxin; PFOR, pyruvateferredoxin oxidoreductase; OAA, oxaloacetate; FNR, ferredoxin-NADP oxidoreductase; RuBP, ribulose-1,5-bisphosphate;
Nda2, type II NAD(P)H dehydrogenase; CBC, Calvin-Benson cycle; Ndh1, NADPH dehydrogenase (complex I); OPP,
oxidative pentose phosphate pathway; [FeFe]-Hyd, [FeFe] hydrogenase; Hup [FeNi]-Hyd, uptake [FeNi]-hydrogenase; Hox
[FeNi]-Hyd, bidirectional [FeNi] hydrogenase; [MoFe]-N2ase [MoFe], nitrogenase. (See text for further details.)
Fig. 1. (A) Schematic view of hydrogen production mechanisms in green algae, (B) non-diazotrophic cyanobacteria, and
(C) and heterocyst-forming cyanobacteria. The electron flux is indicated with dashed arrows. PSI, photosystem I; PSII,
photosystem II; PQ, plastoquinone pool; cytb6f, cytochrome b6f; Pc, plastocyanine; Fd, ferredoxin; PFOR, pyruvateferredoxin oxidoreductase; OAA, oxaloacetate; FNR, ferredoxin-NADP oxidoreductase; RuBP, ribulose-1,5-bisphosphate;
Nda2, type II NAD(P)H dehydrogenase; CBC, Calvin-Benson cycle; Ndh1, NADPH dehydrogenase (complex I); OPP,
oxidative pentose phosphate pathway; [FeFe]-Hyd, [FeFe] hydrogenase; Hup [FeNi]-Hyd, uptake [FeNi]-hydrogenase; Hox
[FeNi]-Hyd, bidirectional [FeNi] hydrogenase; [MoFe]-N2ase [MoFe], nitrogenase. (See text for further details.)