Ultraviolet radiation and cyanobacteria SCIE SCOPUS

Cited 86 time in WEB OF SCIENCE Cited 94 time in Scopus
Title
Ultraviolet radiation and cyanobacteria
Author(s)
Rastogi, Rajesh Prasad; Sinha, Rajeshwar P.; Moh, Sang Hyun; Lee, Taek Kyun; Kottuparambil, Sreejith; Kim, Youn-Jung; Rhee, Jae-Sung; Choi, Eun-Mi; Brown, Murray T.; Haeder, Donat-Peter; Han, Taejun
KIOST Author(s)
Lee, Taek Kyun(이택견)
Publication Year
2014-12
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. (C) 2014 Elsevier B.V. All rights reserved.
ISSN
1011-1344
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2652
DOI
10.1016/j.jphotobiol.2014.09.020
Bibliographic Citation
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY, v.141, pp.154 - 169, 2014
Publisher
ELSEVIER SCIENCE SA
Subject
RICE-FIELD CYANOBACTERIUM; PROGRAMMED CELL-DEATH; BLUE-GREEN-ALGA; UV-B RADIATION; PSBA GENE FAMILY; AMINO-ACIDS MAAS; MYCOSPORINE-LIKE COMPOUNDS; SYNECHOCOCCUS PCC 7942; SP STRAIN PCC-6803; PHOTOSYSTEM-II
Type
Article
Language
English
Document Type
Review
Publisher
ELSEVIER SCIENCE SA
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