Journal Article

Oxidative stress in cyanobacteria

Amel Latifi, Marion Ruiz and Cheng-Cai Zhang

in FEMS Microbiology Reviews

Volume 33, issue 2, pages 258-278
Published in print March 2009 |
Published online February 2009 | e-ISSN: 1574-6976 | DOI:

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Reactive oxygen species (ROS) are byproducts of aerobic metabolism and potent agents that cause oxidative damage. In oxygenic photosynthetic organisms such as cyanobacteria, ROS are inevitably generated by photosynthetic electron transport, especially when the intensity of light-driven electron transport outpaces the rate of electron consumption during CO2 fixation. Because cyanobacteria in their natural habitat are often exposed to changing external conditions, such as drastic fluctuations of light intensities, their ability to perceive ROS and to rapidly initiate antioxidant defences is crucial for their survival. This review summarizes recent findings and outlines important perspectives in this field.

Keywords: cyanobacteria; photosynthesis; reactive oxygen species; antioxidants; transcriptional regulation

Journal Article.  14504 words.  Illustrated.

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