Sharma, Monika ， Dinesh, Rachana ， Sen, Seema
2025-11-13 ACTA PHYSIOLOGIAE PLANTARUM 2025 47(卷), 12(期), (null页)
Increased level of antioxidants and enzymatic activity protects the plants from oxidative damage under stress conditions. In the present study antioxidants involved in the Ascorbate-Glutathione (ASC-GSH) cycle (Ascorbate Peroxidase, Glutathione Reductase, Ascorbate and Dehydroascorbate) were investigated under salt stress in two species of genus Prosopis (P. cineraria and P. juliflora). Both these species are economically very important in arid and semi-arid regions of Rajasthan. For the experimentation one-week-old seedling were treated with different salt concentrations ranging from 0 to 200 mM (0, 25, 50, 75, 100, 150 and 200). The leaves were harvested after 15 and 30 days. The Ascorbate content of both the species increased under salt stress. But Dehydroascorbate content decrease. The activity of enzymes Ascorbate Peroxidase (APX) and Glutathione Reductase (GR) were also increased under salt stress. The increase was comparatively more prominent in P. juliflora which indicates the upregulation of Ascorbate-Glutathione cycle is higher in P. juliflora and it plays a great role in making P. juliflora more tolerant under high salinity conditions.