Volume 16, Issue 61 (3-2026)
NCMBJ 2026, 16(61): 71-81 |
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Movahedi M, Arbabian S, majd A, Tajadod G, Jafari Marandi S. Effects of Manganese Oxide Nanoparticles and Bulk Manganese Oxide via Seed Priming on Portulaca oleracea L.. NCMBJ 2026; 16 (61) :71-81
URL: http://ncmbjpiau.ir/article-1-1800-en.html
URL: http://ncmbjpiau.ir/article-1-1800-en.html
Department of Biology, NT. C., Islamic Azad University, Tehran, Iran
Abstract: (88 Views)
Aim and Background: Portulaca oleracea (purslane) is a halophyte plant known for its high nutritional and medicinal value. Due to its resistance to environmental stresses and abundance of metabolic compounds, it plays a significant role in agriculture and medicine. With the promising advancements in nanotechnology in agriculture, nanoparticles have been introduced as alternatives to traditional compounds. This study aimed to systematically compare the effects of manganese oxide nanoparticles (Mn2O3 NPs) and bulk manganese oxide (Bulk Mn2O3) on seed germination, early growth, and physiological processes in purslane through seed priming. This research is the first comprehensive evaluation of the simultaneous effects of manganese form and concentration on this plant.
Materials and Methods: In this study, the characteristics of the nanoparticles were examined using electron microscopy (SEM/TEM). Purslane seeds were treated with different concentrations (0, 10, 100, 500 mg/L) of manganese oxide nanoparticles and bulk manganese oxide. Growth parameters (root and shoot length, fresh and dry weight), germination parameters (germination percentage and rate), and chlorophyll content (a, b, and total chlorophyll) were measured, and the data were analyzed using Duncan's test in SPSS software.
Results: manganese oxide nanoparticles at high concentrations (100-500 mg/L) caused a significant reduction of 30-40% in root and shoot length. However, the lower concentrations of manganese oxide nanoparticles (10 mg/L) improved the germination percentage and rate by 15% compared to the control. Bulk manganese oxide at all concentrations led to a 25% improvement in root and shoot length, as well as fresh and dry weight of Purslane seedlings. 20-35%. A significant reduction in chlorophyll content was observed in all treated groups, with the highest reduction in chlorophyll content associated with the highest concentration of manganese oxide nanoparticles (500 mg/L).
Conclusion: This study shows that bulk and nanoparticle forms of manganese oxide have contrasting effects on the growth and physiological processes of Purslane. Manganese oxide nanoparticles at high concentrations exhibit notable toxicity, while at lower concentrations (10 mg/L), they act as a biostimulant and are useful for seed germination. On the other hand, bulk manganese oxide, despite improves growth parameters (root and shoot length), its use should be recommended with caution due to the reduction in seedling weight and chlorophyll content. Overall, the role of nanoparticles as a novel factor in seed priming is highlighted, suggesting that their use as a stable alternative to conventional compounds can enhance seed germination and plant resistance while minimizing environmental pollution.
Materials and Methods: In this study, the characteristics of the nanoparticles were examined using electron microscopy (SEM/TEM). Purslane seeds were treated with different concentrations (0, 10, 100, 500 mg/L) of manganese oxide nanoparticles and bulk manganese oxide. Growth parameters (root and shoot length, fresh and dry weight), germination parameters (germination percentage and rate), and chlorophyll content (a, b, and total chlorophyll) were measured, and the data were analyzed using Duncan's test in SPSS software.
Results: manganese oxide nanoparticles at high concentrations (100-500 mg/L) caused a significant reduction of 30-40% in root and shoot length. However, the lower concentrations of manganese oxide nanoparticles (10 mg/L) improved the germination percentage and rate by 15% compared to the control. Bulk manganese oxide at all concentrations led to a 25% improvement in root and shoot length, as well as fresh and dry weight of Purslane seedlings. 20-35%. A significant reduction in chlorophyll content was observed in all treated groups, with the highest reduction in chlorophyll content associated with the highest concentration of manganese oxide nanoparticles (500 mg/L).
Conclusion: This study shows that bulk and nanoparticle forms of manganese oxide have contrasting effects on the growth and physiological processes of Purslane. Manganese oxide nanoparticles at high concentrations exhibit notable toxicity, while at lower concentrations (10 mg/L), they act as a biostimulant and are useful for seed germination. On the other hand, bulk manganese oxide, despite improves growth parameters (root and shoot length), its use should be recommended with caution due to the reduction in seedling weight and chlorophyll content. Overall, the role of nanoparticles as a novel factor in seed priming is highlighted, suggesting that their use as a stable alternative to conventional compounds can enhance seed germination and plant resistance while minimizing environmental pollution.
Keywords: Purslane, manganese oxide nanoparticles, bulk manganese oxide, seed priming, oxidative stress
Type of Study: Research Article |
Subject:
Botany
Received: 2026/03/8 | Accepted: 2026/03/1 | Published: 2026/03/1
Received: 2026/03/8 | Accepted: 2026/03/1 | Published: 2026/03/1
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