Production, detection, and signaling of singlet oxygen in photosynthetic organisms.

摘要: Abstract Significance: In photosynthetic organisms, excited chlorophylls (Chl) can stimulate the formation of singlet oxygen (1O2), a highly toxic molecule that acts in addition to its damaging nature as an important signaling molecule. Thus, due this dual role 1O2, production and detoxification have be strictly controlled. Recent Advances: Regulation pigment synthesis is essential control 1O2 production, several components Chl insertion machineries assemble disassemble protein/pigment complexes recently been identified. Once produced, activates cascade from chloroplast nucleus involve multiple mechanisms specific gene expression response. Further, was shown interact with signal cascades other reactive species, oxidized carotenoids, lipid hydroperoxide-derived electrophile species. Critical Issues: Despite recent progresses, hardly anything known ab...