Comparing some physiological parameters of Caspian locust (Gleditsia caspica Desf.) and River red gum (Eucalyptus camadulensis Dehnh.) affected by Cadmium sulphide nanoparticles

This study investigated physiological response of Caspian locust and River red gum affected by Cadmium sulphide nanoparticles. First we grew one-year old seedlings of two plants in similar conditions. The experiment designed was a randomized complete block with three replications and two concentrations of Cadmium Nano-sulphide (20 and 80 mg/lit) beside the control treatment was conducted in greenhouse. After 30 days sampling was done for plants and the amounts of proline, chlorophyll, soluble sugar, Mallon di-aldehyde and amount of Cadmium sulphide in roots and aboveground parts were measured. Analysis of variance was conducted to test differences and Duncan test for compare means. Results showed that more aggregation of nanoparticles was seen in roots than aboveground parts. Also absorption of nanoparticles in River red gum was more than Caspian locust. The results also showed that increasing the amount of nanoparticles affected the amounts of Mallon di-aldehyde. Amount of chlorophyll was decreased in River red gum while inversely was increased in Caspian locust. In general, the concentrations of cadmium sulfide nanoparticles was studied under this experimental conditions, have many negative effects on Caspian locust. Reducing the amount of sugar and proline in this species, is most likely due to the effect of nanoparticles on creating water stress. In fact, nanoparticles have been indirectly reduced the amount of sugar and proline. While River red gum increased production of sugar and proline to regulate osmotic level. However, plant protection and anti-oxidants may also be involved.