OICC Press Trends in Phytochemical Research 2588-3631 8 4 2024 12 30 Salt stress alters phytochemical, physio-biochemical, photosynthetic and antioxidant attributes of Satureja mutica 248 260 10.71596/tpr.2024.1184720 EN Hoshangh Rahmati Department of Agriculture, Technical and Engineering Faculty, Payame Noor University, Tehran, Iran Borzou Yousefi Kermanshah Agricultural and Natural Resources Research and Education Center, Kermanshah, Iran Journal Article 2024 12 30 Forest savory (Satureja mutica Fisch. & C. A. Mey) is known as an oil-bearing plant which is used in the pharmaceutical, health and food industries. We studied the effect of 0, 50, 100 and150 mM NaCl on some physio-biochemical, photosynthetic and antioxidant characteristics  in a greenhouse completely randomized design experiment (CRD, r = 3). Results showed that NaCl levels on average reduced the shoot dry weight, EO yield/plant, chlorophyll a, b, a+b, carotenoied and carvacrol content respectively by 40.90, 38.65, 38.39, 24.41, 34.92,444, and 63.90%. However NaCl levels on average increased leaf proline content (805.13%), leaf protein content (36.06%), SOD activity (392.98%), POD (115.52%), catalase activity (704.60%), EO percent (10.70%), p-cymene (58.06%), and thymol content (22.66%). Results confirmed that S. mutica tolerates salt less than 100 mM. Therefore, plantation of this species don’t recommend in the salty soils.