Chaste plant extract is a promising biostimulant for tomato plants' growth under salt stress

Temperature change, global warming, and the ever-changing climate have made life extremely difficult for plants. Our research analyzed the effects of chaste plant extract on salt-stressed tomatoes. Three concentrations of chaste plant extract (CPE) were applied (0.25%, 0.5%, and 1%). The obtained results indicated that CPE-treated plants showed a higher ability to tolerate salt stress (75 mM) by a significant increase in plant growth and photosynthetic pigment content (p <= 0.05). Antioxidant enzyme activities such as superoxide dismutase (SOD), isocitrate dehydrogenase (ICDH), glutathione peroxidase (GPx), and glutathione reductase (GR) are also crucial in the case of treatments. Carbon-nitrogen enzymes such as phosphoenolpyruvate carboxylase (PEPC), malate dehydrogenase (NAD-MDH), and glutamine synthase have changed (GS). Our results suggest that the application of chaste plant extract could be used as a promising plant growth biostimulant for treating tomato plants under salinity stress.