Cited by 225Photosynthetic Processes and MechanismsLight effects on plantsBiocrusts and Microbial Ecology

Ultraviolet radiation and cyanobacteria

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Rastogi, Rajesh Prasad, Sinha, Rajeshwar P., Moh, Sang Hyun, Lee, Taek Kyun, Kottuparambil, Sreejith, Kim, Youn-Jung, Rhee, Jae-Sung, Choi, Eun-Mi +3 more·2014·Journal of Photochemistry and Photobiology B: Biology

Abstract

Cyanobacteria are the dominant photosynthetic prokaryotes from an ecological, economical, or evolutionary perspective, and depend on solar energy to conduct their normal life processes. However, the marked increase in solar ultraviolet radiation (UVR) caused by the continuous depletion of the stratospheric ozone shield has fueled serious concerns about the ecological consequences for all living organisms, including cyanobacteria. UV-B radiation can damage cellular DNA and several physiological and biochemical processes in cyanobacterial cells, either directly, through its interaction with certain biomolecules that absorb in the UV range, or indirectly, with the oxidative stress exerted by reactive oxygen species. However, cyanobacteria have a long history of survival on Earth, and they predate the existence of the present ozone shield. To withstand the detrimental effects of solar UVR, these prokaryotes have evolved several lines of defense and various tolerance mechanisms, including avoidance, antioxidant production, DNA repair, protein resynthesis, programmed cell death, and the synthesis of UV-absorbing/screening compounds, such as mycosporine-like amino acids (MAAs) and scytonemin. This study critically reviews the current information on the effects of UVR on several physiological and biochemical processes of cyanobacteria and the various tolerance mechanisms they have developed. Genomic insights into the biosynthesis of MAAs and scytonemin and recent advances in our understanding of the roles of exopolysaccharides and heat shock proteins in photoprotection are also discussed.

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Crossref · 10.1016/j.jphotobiol.2014.09.020

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Authors
Rastogi, R. P., Sinha, R. P., Moh, S. H., Lee, T. K., Kottuparambil, S., Kim, Y.-J., Rhee, J.-S., Choi, E.-M., Brown, M. T., Häder, D.-P., & Han, T.
Affiliations
  • Incheon National University (KR)
  • Banaras Hindu University (IN)
  • Korea Institute of Ocean Science and Technology (KR)
  • University of Plymouth (GB)
Corresponding author
Han, Taejun
Venue
Journal of Photochemistry and Photobiology B: Biology
Publisher
Elsevier BV
Published
2014-12
Volume
141
Pages
154-169
ISSN
1011-1344 (ISSN-L)
OpenAlex
W2019067052
Cited by
225
References
204
Citations by year
2026: 18 · 2025: 33 · 2024: 23 · 2023: 26 · 2022: 23 · 2021: 13 · 2020: 26 · 2019: 12 · 2018: 17 · 2017: 14 · 2016: 13 · 2015: 7
FWCI
1.07
Type
journal article
Language
en
Open access
Locations
  • Journal of Photochemistry and Photobiology B Biology (publishedVersion)
  • PubMed (publishedVersion)
  • PEARL (University of Plymouth) (submittedVersion, other-oa)
  • PEARL (University of Plymouth) (submittedVersion)
Funders
  • Incheon National University
  • Ministry of Oceans and Fisheries
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Photosynthetic Processes and Mechanisms
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Light effects on plants
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Biocrusts and Microbial Ecology
Keywords
cyanobacteria, ultraviolet radiation, UV-B radiation, ozone depletion, DNA damage, reactive oxygen species, oxidative stress, photoprotection, mycosporine-like amino acids, scytonemin, antioxidant production, DNA repair, exopolysaccharides, heat shock proteins
MeSH terms
Cyanobacteria, Antioxidants, Bacterial Proteins, Cyclohexanones, DNA Damage, Heat-Shock Proteins, Indoles, Phenols, Polysaccharides, Bacterial, Stress, Physiological, Ultraviolet Rays

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