AI Summary & Key Takeaways
AI InsightOverall, Nano-Si effectively mitigated the detrimental effects of salt stress and enhanced the salt tolerance of lettuce.
📌 3 Key Takeaways
Abstract
The aim of this study was to evaluate the effectiveness of different doses and application methods of nano-silicon (Nano-Si) in enhancing salt tolerance in lettuce (Lactuca sativa L.) and to determine the most effective treatment under saline conditions. The curly lettuce cultivar Caipira (Şakira) (Batavia type) was used as the plant material. Salt stress was imposed by applying 100 mM NaCl 20 d after transplantation. Nano-Si was applied weekly at doses of 0, 0.5, 1.0, 2.0, and 3.0 mM using two different methods, foliar spraying and root drenching. At harvest, plants were evaluated for shoot fresh and dry weights, plant height, plant circumference, crown width, root collar diameter, leaf area, total yield, relative water content (RWC), shoot Na⁺, Cl⁻, K⁺, and Ca²⁺ concentrations, malondialdehyde (MDA), total chlorophyll, and carotenoid contents. Salt stress significantly reduced growth parameters, total yield, RWC, K⁺ and Ca²⁺ concentrations, and photosynthetic pigment content, whereas it increased Na⁺ and Cl⁻ accumulation and MDA levels. In contrast, Nano-Si applications markedly improved plant performance under salt stress. Compared with salt stress alone, Nano-Si treatments increased fresh and dry weights by 37-286%, plant height and root collar diameter by 5-46%, plant circumference and crown width by 6-91%, leaf area by 100-271%, total yield by 74-219%, RWC by 16-56%, K⁺ content by 24-57%, Ca²⁺ content by 56-164%, and photosynthetic pigments by 15-126%. Furthermore, Nano-Si applications reduced Na⁺ uptake by 13-47% and Cl⁻ uptake by 1-40%, while decreasing MDA accumulation by 5-55%. Overall, Nano-Si effectively mitigated the detrimental effects of salt stress and enhanced the salt tolerance of lettuce. Among the treatments, foliar applications of 0.5 and 1.0 mM Nano-Si were the most effective and can be recommended as a promising strategy for improving lettuce performance under saline conditions.
Özet
The aim of this study was to evaluate the effectiveness of different doses and application methods of nano-silicon (Nano-Si) in enhancing salt tolerance in lettuce (Lactuca sativa L.) and to determine the most effective treatment under saline conditions. The curly lettuce cultivar Caipira (Şakira) (Batavia type) was used as the plant material. Salt stress was imposed by applying 100 mM NaCl 20 d after transplantation. Nano-Si was applied weekly at doses of 0, 0.5, 1.0, 2.0, and 3.0 mM using two different methods, foliar spraying and root drenching. At harvest, plants were evaluated for shoot fresh and dry weights, plant height, plant circumference, crown width, root collar diameter, leaf area, total yield, relative water content (RWC), shoot Na⁺, Cl⁻, K⁺, and Ca²⁺ concentrations, malondialdehyde (MDA), total chlorophyll, and carotenoid contents. Salt stress significantly reduced growth parameters, total yield, RWC, K⁺ and Ca²⁺ concentrations, and photosynthetic pigment content, whereas it increased Na⁺ and Cl⁻ accumulation and MDA levels. In contrast, Nano-Si applications markedly improved plant performance under salt stress. Compared with salt stress alone, Nano-Si treatments increased fresh and dry weights by 37-286%, plant height and root collar diameter by 5-46%, plant circumference and crown width by 6-91%, leaf area by 100-271%, total yield by 74-219%, RWC by 16-56%, K⁺ content by 24-57%, Ca²⁺ content by 56-164%, and photosynthetic pigments by 15-126%. Furthermore, Nano-Si applications reduced Na⁺ uptake by 13-47% and Cl⁻ uptake by 1-40%, while decreasing MDA accumulation by 5-55%. Overall, Nano-Si effectively mitigated the detrimental effects of salt stress and enhanced the salt tolerance of lettuce. Among the treatments, foliar applications of 0.5 and 1.0 mM Nano-Si were the most effective and can be recommended as a promising strategy for improving lettuce performance under saline conditions.