نوع مقاله : مقاله پژوهشی
نویسنده
گروه زیست شناسی دانشگاه پیام نور
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسنده [English]
The toxicity of metals is an important environmental problem due to their persistence, non-biodegradability, and their bioaccumulation in the organs of living plants and animals.
One of the methods that can be used for reducing the harmful effects of heavy metals especially cadmium and copper, is the use of mycorrhizal fungus. This research was conducted to determine the effect of the mycorrhizal fungus Funneliformis mosseae on absorption and transfer of cadmium and copper of pistachio cultivar Ahmad Aghaei in response to increasing soil copper and cadmium concentrations. The experiment was performed in factorial form of a completely randomized blocks consist of three levels of copper (0, 300 and 600 mg/L of copper nitrate),four levels of cadmium (0, 200, 600 and 1000 mg/L of cadmium nitrate) and two treatments: inoculated with F.mosseae and without mycorrhizal inoculum. In all the control and plants treated with cadmium and copper, the length and dry weight of root and stem of mycorrhizal plants were more than non-mycorrhizal plants. Also the amount of cadmium and copper transferred from their root to the aerial part (Translation Factor) was significantly lower than the non-mycorrhizal plants. The results showed that the Bioconcentration Factor in plants inoculated with mycorrhizal fungus was significantly lower than non-mycorrhizal plants. Therefore the symbiosis with F. mosseae caused more stabilization and accumulation of cadmium and copper in the root.
کلیدواژهها [English]