Journal
BIOPHYSICAL REVIEWS
Volume 14, Issue 4, Pages 893-904Publisher
SPRINGERNATURE
DOI: 10.1007/s12551-022-00977-z
Keywords
Chlamydomonas reinhardtii; Microalgal hydrogen production; Physiological role of hydrogen production; Photosystem II; Nutrient deprivation; Photosystem II downregulation
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Funding
- Russian Science Foundation [19-14-00255]
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In this article, we provide an overview of the functional connection between photosynthetic mechanisms and light-dependent hydrogen production in microalgae. We also assess the physiological significance of this process and explore the relationship between PSII regulation mechanisms and hydrogen generation. Our findings suggest that light-dependent hydrogen production plays a crucial role in the adaptation of microalgae to environmental stresses.
Certain microalgae species are capable of light-dependent hydrogen production under conditions of dark anaerobic incubation or nutrient deprivation. From the biotechnological point of view, this phenomenon is a process of synthesizing the energy carrier H2 while consuming light energy. Here, we overview the functional connection between the photosynthetic machinery and light-dependent hydrogen production and assess the physiological significance of this process. We characterize events involved in PSII downregulation, as well as the relationship between PSII regulation mechanisms and hydrogen generation. We suggest that the light-dependent hydrogen production forms part and parcel of the sophisticated regulatory network ensuring adaptation of microalgae to such environmental stresses as anaerobiosis or nutrient deprivation.
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