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Coating-Dependent Effects of Silver Nanoparticles on Tobacco Seed Germination and Early Growth
- Source :
- International Journal of Molecular Sciences, International journal of molecular sciences, Volume 21, Issue 10, International Journal of Molecular Sciences, Vol 21, Iss 3441, p 3441 (2020)
- Publication Year :
- 2020
- Publisher :
- MDPI, 2020.
-
Abstract
- Silver nanoparticles (AgNPs) are used in a wide range of consumer products because of their excellent antimicrobial properties. AgNPs released into the environment are prone to transformations such as aggregation, oxidation, or dissolution so they are often stabilised by coatings that affect their physico-chemical properties and change their effect on living organisms. In this study we investigated the stability of polyvinylpyrrolidone (PVP) and cetyltrimethylammonium bromide (CTAB) coated AgNPs in an exposure medium, as well as their effect on tobacco germination and early growth. AgNP-CTAB was found to be more stable in the solid Murashige and Skoog (MS) medium compared to AgNP-PVP. The uptake and accumulation of silver in seedlings was equally efficient after exposure to both types of AgNPs. However, AgNP-PVP induced only mild toxicity on seedlings growth, while AgNP-CTAB caused severe negative effects on all parameters, even compared to AgNO3. Moreover, CTAB coating itself exerted negative effects on growth. Cysteine addition generally alleviated AgNP-PVP-induced negative effects, while it failed to improve germination and growth parameters after exposure to AgNP-CTAB. These results suggest that the toxic effects of AgNP-PVP are mainly a consequence of release of Ag+ ions, while phytotoxicity of AgNP-CTAB can rather be ascribed to surface coating itself.
- Subjects :
- 0106 biological sciences
Metal Nanoparticles
010501 environmental sciences
01 natural sciences
Silver nanoparticle
Nicotiana tabacum L
lcsh:Chemistry
chemistry.chemical_compound
Coating
Bromide
lcsh:QH301-705.5
Dissolution
Spectroscopy
General Medicine
Computer Science Applications
Germination
Seeds
Phytotoxicity
Oxidation-Reduction
medicine.drug
silver nanoparticles
AgNP stability
Silver
germination
root length
fresh and dry weight
engineering.material
behavioral disciplines and activities
Catalysis
Article
Inorganic Chemistry
mental disorders
Tobacco
medicine
Physical and Theoretical Chemistry
Molecular Biology
Biology
0105 earth and related environmental sciences
Ions
Polyvinylpyrrolidone
Organic Chemistry
Surface coating
Oxidative Stress
lcsh:Biology (General)
lcsh:QD1-999
chemistry
engineering
010606 plant biology & botany
Nuclear chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 14220067
- Volume :
- 21
- Issue :
- 10
- Database :
- OpenAIRE
- Journal :
- International Journal of Molecular Sciences
- Accession number :
- edsair.doi.dedup.....4c7c7b56fe0d71277be0eeaf5a91be14