Salinity is one of the major problems that ultimately leads to yield loss among important crops. For all significant crops, average fraction of harvested area – anywhere between 20% and 50% of record yields; these losses are due to drought and high soil salinity. A wide range of strategies are needed to manage these effects. There is a need to develop biological methods for managing salt stress that are simple and low-cost. There are a range of plants recognized as glycophytes, which are sensitive to salt and, in general, our main crops are glycophytic in nature. Parsley (Petroselinum Crispum) is a biennial herb belonging to the Apiaceae family and has higher medicinal values ​​and as a seasoning and garnishing agent in the food industry. It can grow dynamically in a harsh environment with nutrient scarcity. Although P. Crispum has been widely explored for its medicinal values. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an original essay So, in the current study, the effect of NaCl concentrations (control, 25, 50 and 100 µM) on root/shoot length, fresh/dry weights, aimed to investigate the identification of NHX1, using hydroponics. Introduction The 21st century is characterized by international water scarcity, polluted environment along with salinization of soil and water. There are two threats to agronomic sustainability, namely the increase in human population and the decrease in accessible land (Shahbaz et al.,2013). One of the main reasons for natural soil salinity is the fluctuation of the water table. Because the water table fluctuates, crops are unable to use a significant volume of water. As a result, soil allows greater penetration of precipitation and causes the water table to rise (Jardine et al. 2007), ultimately increasing the salinity problem. Natural salts are mobilized and raised to the surface causing salt deposition to increase above the natural level (Mills et al. 2016). In most areas, the problem of soil salinity is due to the rapid expansion of irrigation (Shrivastava et al., 2015). Humans are the other main cause of soil salinity. The use of inadequate cultivation techniques, the extensive use of fuels, an increasing number of industries and the use of urban water have led to the deposition of large quantities of salt in the upper part of the soil (Sytar et al., 2018 ). Soil salinity, mainly NaCl, limits the growth and production of numerous cultivated plants. Salinity not only reduced agricultural yield per hectare, but also reduced the cultivable area. Such losses are compounded by the additional challenges that agriculture requires to provide a sufficient diet to the world's population (with superior lifestyles), which is increasing at an alarming rate (Schroeder et al. 2013). Higher NaCl concentration in plants mainly induced osmosis and/or ionic stresses which ultimately lead to secondary stresses, i.e., oxidative and related stresses (Flowers et al., 2008). To survive with an unfavorable Na+ concentration, the plant uses several approaches to sustain a low cytosolic Na+ level. These approaches include; 1. Reduced entry of Na+ into plant cells 2. Compartmentalization of Na+ in the vacuole 3. Efflux of Na+ from the root tip (Aharon et al.,2000). There are many genes (SOS1, NHX1, HKT1/2) involved in these metabolic activities and ion homeostasis to allow the plant to resist higher concentrations of Na+.