https://www.selleckchem.com/products/gw806742x.html broad spectrum antibacterial agents.Arecoline is one of the main medicinal constituents in areca. Melatonin is an amine molecule with multiple functions in plants and animals. However, the interaction between arecoline and melatonin remains unknown. Herein, metabolomics analysis showed that multiple metabolites including arecoline were induced in areca by exogenous melatonin. In vitro assay demonstrated that the induced arecoline had strong antioxidant capacities, being similar to the traditional function of melatonin. Both arecoline and melatonin could significantly improve plant disease resistance against Colletotrichum kahawae and delay post-harvest physiological deterioration (PPD) of areca fruits, through modulation of the levels of jasmonic acid (JA), salicylic acid (SA), ethylene (ETH) and abscisic acid (ABA), reactive oxygen species (ROS) level as well as glycolytic activity. In addition, animal and cell assays indicated that arecoline and melatonin could commonly enhance anti-inflammatory effects through regulating ROS and hypoxia inducible factor-1α (HIF-1α). Taken together, melatonin could serve as an inducer of arecoline and they show coordinated roles in antioxidative activity and immune responses in areca and animals. This study greatly extends the knowledge of the action of melatonin in areca and animals.Advances in DNA sequencing have revolutionized our ability to read genomes. However, even in the most well-studied of organisms, the bacterium Escherichia coli, for ≈65% of promoters we remain ignorant of their regulation. Until we crack this regulatory Rosetta Stone, efforts to read and write genomes will remain haphazard. We introduce a new method, Reg-Seq, that links massively parallel reporter assays with mass spectrometry to produce a base pair resolution dissection of more than a E. coli promoters in 12 growth conditions. We demonstrate that the method recapitulates known regulatory information