Mechanism of growth inhibition mediated by disorder of chlorophyll metabolism in rice (Oryza sativa) under the stress of three polycyclic aromatic hydrocarbons

Quinolone Antibiotics Inhibit the Rice Photosynthesis by Targeting Photosystem II Center Protein: Generational Differences and Mechanistic Insights

“…The light reaction generates ATP and NADPH through photon absorption and transfer, which the dark reaction utilizes for carbon fixation, carboxylation, and reductive processes, yielding monosaccharides, such as fructose, for plant development. Previous research discovered susceptibility of both photosynthetic stages to organic environmental contaminants, albeit the main interference varied with contaminant type. − For example, polycyclic aromatic hydrocarbons (PAHs) primarily disrupt chlorophyll biosynthesis and degradation in the light reaction, whereas polychlorinated biphenyls (PCBs) affect carbon fixation and carboxylation in the dark reaction . These effects have been linked to the molecular structures of the pollutants, with studies like Zhang et al positing that PCBs obstruct carboxylation by competing for CO 2 active sites.…”