Allelopathic potential of aqueous leaf extract of <i>Rumex dentatus</i> L. on metabolites and enzyme activities of common purslane leaves

The present study was conducted to investigate the allelopathic activity of Rumex dentatus aqueous leaf extract on metabolites, reactive oxygen species (ROS), and enzymes activities in Portulaca oleraceae. results showed a reduction carbohydrates, protein, DNA, RNA contents. However, total phenolics, flavonoids, malondialdehyde were enhanced. ROS such as hydrogen peroxide, superoxide radicals, hydroxyl radicals increased concentration-dependent manner. glucose-6-phosphate dehydrogenase, 6-phosphoglucnate nitrate reductase, glutamine synthetase reduced leaves concentration increased; however NADH-oxidase phenylalanine ammonia-lyase under treatment with various tested concentrations extract. Gas chromatography–mass spectrometry profile performed for detection dominant compounds that may reveal impact metabolites activities.