蓝藻
光合作用
活性氧
氧化应激
生物
抗氧化剂
电子传输链
氧化磷酸化
氧化损伤
生物物理学
植物
生物化学
细菌
遗传学
作者
Amel Latifi,Marion Ruiz,Cheng‐Cai Zhang
标识
DOI:10.1111/j.1574-6976.2008.00134.x
摘要
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.
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