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Biosynthesis of NanoSilver and Its Effect on Key Genes of Flavonoids and Physicochemical Properties of Viola tricolor L.

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Abstract

Wild pansy (Viola tricolor L.) is of the Violaceae plant family. Some of the medicinal properties of this plant are related to the ability to produce and biosynthesized a group of flavonoids. Silver nanoparticles are one of the most important and attractive nanomaterials among several metal nanoparticles.In the present study, plant-mediated nanosilver was produced from aqueous extract of Pansy flower as a good covering and stabilizing agent using the green synthesis method. Dynamic light scattering (DLS), transmission electron microscopy (TEM), and zeta potential methods were used to determine the specifications of synthesized nanoparticles. In this study, the effect of different concentrations of bio nanosilver 0, 10, 50, and 100 mg/l on phytochemical and physiological properties, and the expression of some key genes involved in flavonoids biosynthesis including phenylalanine ammonia-lyase (PAL), chalcone synthase (CHS), flavonoid 3′, 5′-hydroxylase (F3′5′H), and flavonoid 3-hydroxylase (F3′H) were determined in V. tricolor plant. The results showed nanosilver treatments cause the accumulation of manganese, zinc, and silver elements and increasing the content of phenolic, flavonoid, anthocyanin and antioxidant activity. Using AgNPs also causes the increase in activity of antioxidant enzymes such as superoxide dismutase (SOD), ascorbate peroxidase (APX), phenylalanine ammonia-lyase (PAL), and peroxidase (POD). Besides, treatment with a concentration of 10 mg/l of silver nanoparticles significantly causes an increase in flavonoids compounds such as rutin, apigenin, and quercetin. Our results suggest that bio nanosilver could increase secondary metabolites content in the V. tricolor plant.

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Notes

  1. SEM.

  2. TEM.

  3. Zeta potential.

  4. DLS.

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Acknowledgments

The author thanks the Razi Herbal Medicine Research Center of the Lorestan University of Medical Science for their contribution to implementing the project.

Funding

There are no known competing financial interests or personal relationships that could have appeared to influence the work reported in this article.

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Contributions

AH was involved in data curation, writing—original draft, conceptualization, methodology, resources, formal analysis. SS contributed to review and editing, supervision, project administration. HLY was involed in validation, supervision, project administration. AI contributed to software, supervision, project administration.

Corresponding author

Correspondence to Sara Saadatmand.

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Ethical Statement

I testify on behalf of all co-authors that our article submitted to Iranian Journal of Science and Technology, Transactions A: Science:

Data availability statement

The data that support the findings of this study are available from the corresponding author, [S.saadatmand], upon reasonable request.

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Hassanvand, A., Saadatmand, S., Lari Yazdi, H. et al. Biosynthesis of NanoSilver and Its Effect on Key Genes of Flavonoids and Physicochemical Properties of Viola tricolor L.. Iran J Sci Technol Trans Sci 45, 805–819 (2021). https://doi.org/10.1007/s40995-021-01091-7

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  • DOI: https://doi.org/10.1007/s40995-021-01091-7

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