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Chitosan Nanoparticles’ Biphasic Impact on Salvia nemorosa: Optimizing Resilience and Secondary Metabolism | ||
| علوم زیستی گیاهی | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 15 اسفند 1403 | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22108/ijpb.2025.144190.1396 | ||
| نویسنده | ||
| سید حامد معظمی فریدا* | ||
| گروه زیست شناسی گیاهی و جانوری، دانشکده علوم و فناوریهای زیستی، دانشگاه اصفهان، اصفهان، ایران | ||
| چکیده | ||
| Nanotechnology offers innovative approaches to enhance crop resilience against environmental stresses. Chitosan nanoparticles (ChNPs) are recognized for boosting plant defense mechanisms and secondary metabolite production. Salvia nemorosa, a medicinal plant rich in bioactive compounds, is sensitive to stressors impacting its growth and metabolite accumulation. This study explored the dose-dependent effects of ChNPs on S. nemorosa’s physiological and biochemical parameters, including photosynthetic pigments, oxidative stress markers, antioxidant enzyme activities, and secondary metabolites. Two-month-old plants were foliar-sprayed with ChNPs (0–160 ppm), and responses were evaluated after two weeks. Lower doses (10–40 ppm, optimal at 20 ppm) enhanced growth, phenolic compound accumulation, and enzyme activities such as phenylalanine ammonia-lyase (PAL) and tyrosine aminotransferase (TAT), while higher doses (80–160 ppm) induced oxidative stress, reduced chlorophyll and carotenoid levels, and diminished metabolite production. Antioxidant enzymes—superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD)—increased significantly at higher concentrations, reflecting a robust defense against oxidative damage. These findings highlight ChNPs’ dual role in stress tolerance and metabolite biosynthesis, offering insights for optimizing medicinal plant cultivation via nanotechnology. This study provides comprehensive insights into the biphasic effects of ChNPs on S. nemorosa, contributing to sustainable cultivation strategies. | ||
| کلیدواژه‌ها | ||
| Antioxidant enzymes؛ Chitosan nanoparticles؛ Oxidative stress؛ Salvia nemorosa؛ Phenolic compounds | ||
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آمار تعداد مشاهده مقاله: 22 |
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