Iron and Drought StressThe other devastating abiotic stress that is considered to be 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; M. Farooq et al., 2012; Abolhasani and Saeidi, 2004; Monjezi et al., 2013 ). This harms the growth and development of plants, reduces the growth rate of crops, and also affects the accumulation of biomass. Generally, in crop plants, drought severely affects cell division and expansion, root elongation, leaf size, root proliferation and inhibition of shoot growth (Sharp & Davies 1989; Spollen et al., 1993; Yamaguchi et al., 2010). Besides, it also seriously hinders all kinds of plant functions and physiological and biochemical characteristics 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 because the rate of transpiration is reduced and damage to active transport and membrane permeability occurs (Viets, 1972 Alam, 1999; Simultaneously, due to As soil moisture decreases, a problem arises with poor distribution of nutrients absorbed by plant roots in the soil (Alam, 1999; Yasar et al). More importantly, drought results in increased generation. reactive oxygen species (ROS) due to energy accumulation under plant stress conditions (Smirnoff 1993; Asada 2006; Waraich et al., 2011). by restricting CO2 entry into the leaf or reducing metabolism (Smirnoff 1993; Loggini et al., 1999; Ap...... middle of paper ...... is also responsible for the improvement. of protein quality, being advantageous in increasing resistance to drought stress (Parhamfar, T. 2006; Afshar et al., 2012). It is important to mention that Fe could modify drought resistance through its effects on root growth (Snyder and Schmidt, 1974; Glinski et al., 1992). Under drought stress such as Fe deficiency conditions, application of iron to turf led to color enrichment and growth improvement (Deal and Engel, 1965; Minner and Butler , 1984; Also under Fe-sufficient conditions, iron has been applied to impart a darker green color to cool-season turf (Carrow, 1983; Schmidt and Snyder, 1984; Snyder and Schmidt, 1974; Wehner and Haley, 1990; Yust et al., 1984; Large, in-depth and well-informed investigative work is still needed to understand iron defense against drought stress..