ArticleProceedings of the National Academy of Sciences of the United States of America2026
Nocturnal hydration prepares desert cyanobacteria for dawn-light harvesting by inducing phycoerythrin synthesis.
Article in Proceedings of the National Academy of Sciences of the United States of America, 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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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- The natural history of a biocrust architect, the cyanobacterium Microcoleus vaginatus.FEMS microbiology reviews · 2026Review
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Authors and funding
11 authors.
Funding
Abstract
As crucial ecosystem engineers in global drylands, desert cyanobacteria regulate biogeochemical cycling and contribute to the stabilization of arid soils. These extremophiles frequently exploit nocturnal dew deposition to resume metabolism, activate photosynthesis during brief dawn illumination, and then return to diurnal quiescence. Although phycobilisome remodeling is a key evolutionary adaptation for light capture under dim conditions, the molecular mechanisms that optimize light harvesting during the narrow window of hydration/light overlap remain unclear. Here, we show that genes involved in phycoerythrin (PE) synthesis are induced primarily by nighttime rehydration, prior to light exposure. We identify SigB1 as an essential regulator of PE synthesis, where it functions in concert with the activator CpeR1. Deletion of
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