Among the different micro-organism which could change the soil biodiversity, arbuscular mycorrhizal fungi (AMF) have a key role. These fungi not only affect the growth of plants by symbiosis, but also could improve the soil properties. In order to study the effects of AMF species on growth and physiological traits of sorghum an experiment was conducted in controlled condition of greenhouse. Experimental treatments were two levels of cadmium (0 and 40 mg.kg -1 soil) and four levels of AMF application (F0: without fungi, F1: application of 20 g Glomus mosseae, F2: application of 20 g Glomus intraradices, F3: application of 10 g Glomus mosseae+10 g Glomus intraradices). Soil contamination with cadmium negatively affected all of the traits of sorghum plant. The lowest amount of shoot and root dry weight measured in Cd contaminated soil. Application of both species of mycorrhiza improved the produced biomass, however simultaneous application of two mycorrhiza fungi species had more positive effect rather than mono-inoculation and these results were more pronounced under cadmium stress conditions. AMF application both in the presence and absence of cadmium significantly increased the phosphorus uptake. Different AMF treatments also has positive effect on photosynthetic pigments and relative water content of leaf.
