Effect of carbon dot nanoparticles on sesame seeds

Carbon dots are indeed small carbon nanomaterials with low toxicity, good biocompatibility, good solubility in water and widespread availability. Carbon dots are smaller than other carbon nanoparticles that can be absorbed by the roots. Then, they enter cells and nuclei and interact with DNA to affect gene expression. Considering the importance of Cultivation of oil plants, in this study, the effect of carbon nanoparticles on the growth parameters of sesame was investigated. The nanoparticles were synthesized from plant tragacanth gum hydrothermally. TEM images obtained from carbon dots showed an almost spherical shape with an average diameter of ۱-۱.۵ nm. The XRD pattern showed a width peak at ۲ꆪ of about ۲۵.۸° and ۳۸.۸°, which is related to the amorphous structure and graphite section of carbon dots. Carbon dots at concentrations of ۰, ۵, ۱۰, ۵۰ and ۱۰۰ mg l-۱ were added to Petri dishes containing ۱۰ sesame seeds. Seedlings were harvested after ۷ days and some growth indicators were measured. Parameters of wet weight, seedling length and root length showed significant differences between different concentrations; as the concentration of ۵۰ mg l-۱ showed the highest values. Concentration of ۱۰ mg l-۱ showed the highest amount of chlorophyll a, b and carotenoids compared to other concentrations; however, there was no significant difference between different concentrations. Considering that the growth indicators in all treatments increased compared to the control, it seems that Carbon dots will have a positive effect on sesame plant growth; however, more research is needed in the later stages of development

کلیدواژه ها:

Seedling length ، photosynthetic pigments ، growth indicators ، fresh weight