Effects of copper oxide nanoparticles on germination of Sesbania virgata (FABACEAE) plants

Nanotechnology is a field that, over the years, has been growing in several research areas, such as medicine, agriculture and cosmetics, among others. As result, there continuous increase production, use disposal of these materials environment. The behaviour (bio) activity atmosphere, water soil are not fully studied. Therefore, it necessary to carry out an analysis risks contamination, well possible effects impacts nanoparticles (NPs) on ecosystem. In attempt investigate plants, present study aimed impact copper oxide (CuO NPs) seed germination process Sesbania virgata. For this, virgata seeds were subjected different concentration CuO NPs (0, 100, 200, 300 400 mgL-1) their development monitored by optical (thermography chlorophyll fluorescence). results show that induced reduction maximum emission a, which was concentration-dependent. data also showed promoted energy dissipated non-photochemical pathways surface temperature seeds. Additionally, our findings revealed caused root growth inhibition. summary, demonstrates, for first time, can negatively affect physiological status S. plant, altering efficiency functioning photosystem II its initial developmental stage, depending NPs.