Iron and Drought Stress The other devastating abiotic stress considered highly responsible worldwide for the decrease in yield and quality of crop productivity is drought (Lambers et al. 2008 ; Moghadam et al., 2011; Mohsen Pourgholam et al., 2013; It damages the growth and development of plants and reduces the growth rate of crops and also affects the accumulation of biomass. In general, drought severely affects cell division and expansion, root elongation, leaf size, root proliferation and inhibition of shoot growth in crop plants (Sharp & Davies 1989; Spollen et al .,1993; Yamaguchi et al.,2010). Furthermore, it severely hinders all kinds of plant functions and physiological and biochemical traits such as mineral elements, carbohydrates, free radicals, ions, hormones, lipids and nucleic acids (HongBo et al., 2005; Yasar et al., ; Moghadam et al. .,2011,Mohsen Pourgholam et al,2013). Nutrient transport from roots to stem is severely affected by drought as the transpiration rate is reduced and damage to active transport and membrane permeability occurs (Viets, 1972 ; Alam, 1999; At the same time, due to the decrease in soil moisture, the problem of low distribution of nutrients absorbed by plant roots in the soil occurs (Alam, 1999; Yasar et al). More importantly, drought leads to an increase in the generation of reactive oxygen species ( ROS) due to energy accumulation under plant stress conditions (Smirnoff 1993; Asada 2006; Waraich et al., 2011). Drought decreases photosynthetic carbon fixation mainly through limitation of CO2 entry into the leaf or reducing metabolism (Smirnoff 1993; Loggini et al., 1999; Ap...... half of the document ...... is also responsible for improving protein quality being beneficial in increasing resistance to stress from drought (Parhamfar, T. 2006; Afshar et al.,2012). It is important to remember that Fe could modify drought resistance through its effects on root growth (Snyder and Schmidt, 1974; Glinski et al., 1992). Under drought stress as well as under conditions of Fe deficiency, iron application to turf has resulted in color enrichment and growth improvement (Deal and Engel, 1965; Minner and Butler, 1984; Glinski et al., 1992). Even under Fe-deficient conditions, iron has been applied to impart a darker green color to cool-season turfgrass (Carrow, 1983; Schmidt and Snyder, 1984; Snyder and Schmidt, 1974; Wehner and Haley, 1990; Yust et al., 1984; Glinski et al., 1992). Extensive and in-depth investigative work is still needed to understand iron defense against drought stress.