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<p>Silver nanoparticles (AgNPs) have beneficial effects on growth and development, biomass accumulation, and biochemical content in plant cell and tissue cultures and are widely used in plant biotechnology. In this study, two different types of bio-AgNPs (YNP and ANP) biosynthesised via <i>C. sinensis</i> and <i>S. officinalis</i> (known as Yeşilçay and Adaçayı in Turkish) leaves were applied to nodal cultures of <i>Sideritis akmanii</i> and <i>Melissa officinalis</i> at five concentrations ranging from 0 to 20 mg/L. The effects of the three factors (plant type, AgNP type, and AgNP concentration) on the growth and development parameters and the biomass accumulations were statistically evaluated. It was determined that multiple shoot regeneration was promoted by AgNP application and increased in a dose-dependent manner. YNP, characterized by its angular shape and smaller diameter, promoted root regeneration rate, root number, and root dry weight more effectively than ANP. YNP treatments also enhanced shoot length, internode length, and chlorophyll-b concentrations. The optimal AgNP concentration for fresh biomass accumulation and root dry weight was 5 mg/L, while the 10 mg/L AgNP application produced the highest values for total phenolic (TFC) and antioxidant (TAC) concentrations. The findings suggest that bio-AgNP effects vary with nanoparticle morphology, dose, and plant species, but generally enhance biomass and biochemical traits.</p>

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Comparative analysis of the effects of two different plant-derived bio-AgNPs on in vitro growth and biochemical compositions of endemic Sideritis akmanii and Melissa officinalis

  • 期刊论文

  • 发表日期：

    2025年11月10日

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  • Pınar Nartop

摘要

Silver nanoparticles (AgNPs) have beneficial effects on growth and development, biomass accumulation, and biochemical content in plant cell and tissue cultures and are widely used in plant biotechnology. In this study, two different types of bio-AgNPs (YNP and ANP) biosynthesised via C. sinensis and S. officinalis (known as Yeşilçay and Adaçayı in Turkish) leaves were applied to nodal cultures of Sideritis akmanii and Melissa officinalis at five concentrations ranging from 0 to 20 mg/L. The effects of the three factors (plant type, AgNP type, and AgNP concentration) on the growth and development parameters and the biomass accumulations were statistically evaluated. It was determined that multiple shoot regeneration was promoted by AgNP application and increased in a dose-dependent manner. YNP, characterized by its angular shape and smaller diameter, promoted root regeneration rate, root number, and root dry weight more effectively than ANP. YNP treatments also enhanced shoot length, internode length, and chlorophyll-b concentrations. The optimal AgNP concentration for fresh biomass accumulation and root dry weight was 5 mg/L, while the 10 mg/L AgNP application produced the highest values for total phenolic (TFC) and antioxidant (TAC) concentrations. The findings suggest that bio-AgNP effects vary with nanoparticle morphology, dose, and plant species, but generally enhance biomass and biochemical traits.