In the present investigation the concentration of N was higher in shoot than root tissues, which decreased as soil salinity increased (Table-3). Root and shoot N concentration were higher in AM inoculated at all salinity levels tested. The maximum concentration of N in shoot and root was found at lowest salinity level in G. mosseae + A. laevis combination. Salts interfere with nitrogen acquisition and utilization by influencing different stages of N metabolism, such as NO-3 uptake and reduction and protein synthesis (Frechill et al., 2001). AM fungi can function as a facilitator for N uptake through activation of a plant ammonium transporter (Guether et al., 2009). Thus, improved uptake of N in mycorrhizal plants under salt stress may be due to better nutrient uptake and maintenance of ionic balance and better acquisition of N (both nitrate and ammonium ions) from the soil. Giri and Mukerji (2004) also recorded highest accumulation of N in shoots of mycorrhizal Sesbania grandiflora and S. aegyptiaca than non mycorrhizal plants at all salinity levels. Increased N uptake in mycorrhizal plants may be due to a change in N metabolism brought about by changes in the enzymes associated with N metabolism (Mathur and Vyas, 1996). Several workers have reported that improved N nutrition may also help to reduce the toxic effects of Na ion by reducing its active uptake and this may indirectly help in maintaining the chlorophyll content of the plant (Evelin et al., 2009).