Dopamine Inhibits Arabidopsis Growth through Increased Oxidative Stress and Auxin Activity

Like some bacterial species and all animals, plants synthesize dopamine react to its exogenous applications. Despite dopamine’s widespread presence activity in plants, role plant physiology is still poorly understood. Using targeted experimentation informed by the transcriptomic response exposure, we identify three major effects of dopamine. First, show that causes hypersensitivity auxin indole-3-acetic acid enhancing activity. Second, increases oxidative stress, which can be mitigated with glutathione. Third, find downregulates iron uptake mechanisms, leading a decreased content—a possibly aimed at reducing DA-induced stress. Finally, dopamine-induced sensitivity downstream glutathione biosynthesis, indicating likely consequence Collectively, our results inhibits growth both directly indirectly promoting glutathione-biosynthesis-dependent hypersensitivity.