| Autor: |
Hippler M; Institute of Plant Biology and Biotechnology, University of Münster, Schlossplatz 8, 48143 Münster, Germany.; Institute of Plant Science and Resources, Okayama University, Kurashiki 710-0046, Japan., Khosravitabar F; Department of Biological and Environmental Sciences, University of Gothenburg, 40530 Gothenburg, Sweden. |
| Jazyk: |
angličtina |
| Zdroj: |
Plants (Basel, Switzerland) [Plants (Basel)] 2024 Jul 30; Vol. 13 (15). Date of Electronic Publication: 2024 Jul 30. |
| DOI: |
10.3390/plants13152114 |
| Abstrakt: |
In the green alga Chlamydomonas reinhardtii , hydrogen production is catalyzed via the [FeFe]-hydrogenases HydA1 and HydA2. The electrons required for the catalysis are transferred from ferredoxin (FDX) towards the hydrogenases. In the light, ferredoxin receives its electrons from photosystem I (PSI) so that H 2 production becomes a fully light-driven process. HydA1 and HydA2 are highly O 2 sensitive; consequently, the formation of H 2 occurs mainly under anoxic conditions. Yet, photo-H 2 production is tightly coupled to the efficiency of photosynthetic electron transport and linked to the photosynthetic control via the Cyt b 6 f complex, the control of electron transfer at the level of photosystem II (PSII) and the structural remodeling of photosystem I (PSI). These processes also determine the efficiency of linear (LEF) and cyclic electron flow (CEF). The latter is competitive with H 2 photoproduction. Additionally, the CBB cycle competes with H 2 photoproduction. Consequently, an in-depth understanding of light-driven H 2 production via photosynthetic electron transfer and its competition with CO 2 fixation is essential for improving photo-H 2 production. At the same time, the smart design of photo-H 2 production schemes and photo-H 2 bioreactors are challenges for efficient up-scaling of light-driven photo-H 2 production. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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