ArticleFrontiers in microbiology2026
Growth of phylogenetically diverse microalgae under Far-Red light enriched spectra: implication for space missions' sustainability.
Article in Frontiers in microbiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Is a constitutive red-shift an advantage for oxygenic photosynthesis under M dwarf starlight? Insights fromFEMS microbes · 2026Article
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7 authors.
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Abstract
State of the art: Photosynthetic oxygenic microorganisms are recognized to be the functional core of Bioregenerative life support systems (BLSS) for sustaining long-term human presence in space. Among these organisms, microalgae are particularly promising due to their elevated growth rates, highly efficient light use, and ability to synthesize a plethora of valuable compounds. Their cultivation could lead to the sustainable production of food enriched in essential nutraceuticals while ensuring oxygen regeneration in confined environments. Understanding their responses to different light spectra is crucial for optimizing their cultivation in close systems and reducing the energetic costs. Considering the growing interest in the potential contribution of Far-Red (FR) light to the photosynthetic process and biomass production, we investigated the acclimations of different microalgal species under light spectra including this low-energy waveband in combination with visible (VIS) light. Research methodologies: Four phylogenetically diverse microalgal species, either capable ( Results: The results showed that microalgal growth under FR-e conditions was consistently higher than expected, being not proportional to the reduced fraction of available VIS photons (37.0% in FR-e vs. 84.3% in SOL). Specifically, growth under FR-e with respect to SOL, reached 61% in Key findings: The results demonstrate that the growth of diverse microalgal species is differently influenced by a low-VIS FR-enriched spectrum. For FR-user species under this light regime the energy costs can be reduced for the efficient production of biomass, while maintaining a comparable quality. The most promising species turned out to be
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