Volume 20, Issue 2 (1-2026)
MGj 2026, 20(2): 0-0 |
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Darem A, Taheri H, Golbashy M. Evaluation of the effect of silicon dioxide nanoparticles (SiO2-NPs) on the expression pattern of fatty acid desaturase genes and some morphophysiological characteristics in purslane plant. MGj 2026; 20 (2) : 5
URL: http://mg.genetics.ir/article-1-1883-en.html
URL: http://mg.genetics.ir/article-1-1883-en.html
Agricultural Sciences and Natural Resources University of Khuzestan, Mollasani, Iran
Abstract: (31 Views)
Silicon (Si) as a quasi-essential element plays an important role in enhancing plant growth and development. Using innovative tools to produce various types of nanofertilizers is one of the effective solutions to increase agricultural production to meet the future needs of the growing population. However, little information is available regarding the effects of Si nanoparticles in regulating metabolism and improving the quality of agricultural products. Since fatty acid desaturases (FADs) play a key role in the biosynthesis of unsaturated fatty acids and enhancing the nutritional value of plants, in this study, the effects of applying different concentrations (10 to 40 ppm) of silicon dioxide nanoparticles (SiO2-NPs) on changes in the expression pattern of omega-6 desaturase (FAD2) and omega-3 desaturase (FAD8) in purslane (Portulaca oleracea), a rich source of polyunsaturated fatty acids (PUFA), were evaluated. Also, the effect of different concentrations of SiO2-NPs on growth parameters, photosynthetic pigment content, and the activity of antioxidant enzyme compounds including catalase and peroxidase was evaluated. The results showed that the transcription rate of desaturase genes changed under different concentrations of SiO2-NPs, especially the expression rate of the FAD2 gene, which showed a significant increase in all applied nanoparticle concentrations compared to control plants (without SiO2-NPs) and reached its maximum value at a concentration of 30 ppm SiO2-NPs. Changes in growth parameters and pigments content were also reported to be significantly positive in response to different concentrations of SiO2-NPs compared to control plants. The activity of catalase and peroxidase enzymes also increased with increasing nanoparticle concentration and reached its maximum value at a concentration of 40 ppm SiO2-NPs. These findings showed that the use of this nanoparticle, through its effect on the expression of fatty acid desaturase genes, plays a key role in regulating the amount of polyunsaturated fatty acids and improving the nutritional and antioxidant value of the plant. Therefore, it can be concluded that SiO2-NPs can help enhance growth indices and increase the photosynthetic capacity of the plant by affecting plant metabolic processes, and play a key role in increasing plant resilience to environmental stresses.
Article number: 5
Keywords: Gene expression, purslane, fatty acid desaturases, antioxidant capacity, silicon dioxide nanoparticles
Type of Study: Applicable |
Subject:
Subject 01
Received: 2025/07/9 | Accepted: 2026/01/31 | Published: 2026/02/3
Received: 2025/07/9 | Accepted: 2026/01/31 | Published: 2026/02/3
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