1. Atmospheric oxygen-derived reactive oxygen species.
Atmospheric oxygen-derived reactive oxygen species. A number of oxygen-derived reactive oxygen species (ROS) are known to exist in plants. The excitation of oxygen (O2) produces singlet oxygen (1O2), while reduction produces superoxide radicals (O2•−), hydrogen peroxide (H2O2) and hydroxyl radicals (OH•). The Lewis structure of each of these ROS is presented in blue, with impaired electrons highlighted in red. The half life (t1/2) is given for each type of ROS and is colour coded with highest value for H2O2 (red) and lowest value for OH• (yellow).
Amna Mhamdi, and Frank Van Breusegem Development 2018;145:dev164376
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