ArticleScientific reports2024
The role of the protective shield against UV-C radiation and its molecular interactions in Nostoc species (Cyanobacteria).
Article in Scientific reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Encapsulation-mediated bioformulation of biocrust inoculants: microbial delivery strategies for dryland soil restoration.Archives of microbiology · 2026Review
- Photosynthetic and secondary metabolic responses of biological soil crusts to combined warming, reduced precipitation, and enhanced UV-B radiation: divergent strategies across developmental stages.Frontiers in plant science · 2026Article
- Cyanobacteria Under UV Radiation: General Insights into Stress Responses.International journal of molecular sciences · 2025Review
- Cyanobacterial scytonemin, a potential photoprotective natural pigment: biomedical, industrial and environmental applications.Archives of microbiology · 2025Review
- Structure revision of scytonemin imine and its relationship to scytonemin chromism and cyanobacterial adaptability.Scientific reports · 2025Article
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Authors and funding
6 authors.
Funding
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Abstract
Cyanobacteria possess special defense mechanisms to protect themselves against ultraviolet (UV) radiation. This study combines experimental and computational methods to identify the role of protective strategies in Nostoc species against UV-C radiation. To achieve this goal, various species of the genus Nostoc from diverse natural habitats in Iran were exposed to artificial UV-C radiation. The results indicated that UV-C treatment significantly reduced the photosynthetic pigments while simultaneously increasing the activity of antioxidant enzymes. Notably, N. sphaericum ISB97 and Nostoc sp. ISB99, the brown Nostoc species isolated from habitats with high solar radiations, exhibited greater resistance compared to the green-colored species. Additionally, an increase in scytonemin content occurred with a high expression of key genes associated with its synthesis (scyF and scyD) during the later stages of UV-C exposure in these species. The molecular docking of scytonemin with lipopolysaccharides of the cyanobacteria that mainly cover the extracellular matrix revealed the top/side positioning of scytonemin on the glycans of these lipopolysaccharides to form a UV-protective shield. These findings pave the way for exploring the molecular effects of scytonemin in forming the UV protection shield in cyanobacteria, an aspect that has been ambiguous until now.
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