FIGURE 1.

The production of intracellular ROS and mechanisms of electronically excited species formation. (ROS production occurs in cell membranes, chloroplasts and mitochondria, where oxygen was converted into O₂e-, H₂O₂, HO^* and 1O₂; the oxidation of biomolecules by ROS leads to the formation of 3R=O^*, 1P^*, 3P^* 1O₂ respectively, resulting in photon emission at different spectral wavelengths.).