M. Gerami, P. Majidian, M. Andarza, H. R. Ghorbani
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引用次数: 0
Abstract
Salinity poses a serious challenge for stevia cultivation to meet growing demand. This study investigates protective supplements for stevia grown under saline conditions. Seedlings were subjected to titanium dioxide nanoparticles (0, 150, and 300 ppm), putrescine (0 and 1 mM), and salt (0, 75, and 150 mM) in a factorial design. Morphological traits (plant height, leaf dry and fresh weight), photosynthetic pigments (chlorophyll a, b, total), proline content, soluble and glycoside sugars (rebaudioside A and stevioside), and antioxidant enzyme activity (catalase and peroxidase) were measured. Higher salt concentrations (150 mM NaCl) reduced plant height, leaf dry and fresh weight, and chlorophyll but increased proline, soluble and glycoside sugars, and antioxidant enzyme activity. Foliar applications of putrescine (1 mM) and TiO2 nanoparticles (150 and 300 ppm) mitigated salt stress by improving growth and physiological properties. Simultaneous application of putrescine (1 mM) and TiO2 nanoparticles (300 ppm) was most effective at enhancing secondary metabolite production, important for the pharmaceutical industry. This study demonstrates protective roles of putrescine and TiO2 nanoparticles for stevia cultivation under saline conditions.
期刊介绍：
Russian Journal of Plant Physiology is a leading journal in phytophysiology. It embraces the full spectrum of plant physiology and brings together the related aspects of biophysics, biochemistry, cytology, anatomy, genetics, etc. The journal publishes experimental and theoretical articles, reviews, short communications, and descriptions of new methods. Some issues cover special problems of plant physiology, thus presenting collections of articles and providing information in rapidly growing fields. The editorial board is highly interested in publishing research from all countries and accepts manuscripts in English.
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