The effects of nano-TiO2 on seed germination, development and mitosis of root tip cells of Vicia narbonensis L. and Zea mays L
| Autor: | Monica Ruffini Castiglione, C. Geri, Roberto Cremonini, Lucia Giorgetti |
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| Rok vydání: | 2010 |
| Předmět: |
Vicia narbonensis
Mitotic index Materials science food and beverages Bioengineering General Chemistry Meristem Chromosome aberrations - Genotoxicity - Mitotic activity - Nanoparticles - Nanotechnology EHS Condensed Matter Physics medicine.disease_cause Atomic and Molecular Physics and Optics Horticulture Germination Modeling and Simulation Micronucleus test medicine General Materials Science Elongation Mitosis Genotoxicity |
| Zdroj: | Journal of Nanoparticle Research. 13:2443-2449 |
| ISSN: | 1572-896X 1388-0764 |
| Popis: | This study aimed to provide new information about phyto-toxicology of nano-TiO2 on plant systems. To contribute to the evaluation of the potential harmful effects of the nanoparticles on monocots and dicots we considered their effects on seed germination and root elongation applying a concentration range from 0.2 to 4.0‰ in the plants Zea mays L. and Vicia narbonensis L. Moreover, we achieved a genotoxicity study at cytological level in root meristems by means of traditional cytogenetic approach, to evidence possible alterations in mitotic activity, chromosomal aberrations, and micronuclei release. From these analyses it comes out that nano-TiO2 particles, after short-term exposure and under our experimental conditions, delayed germination progression for the first 24 h in both materials. Root elongation was affected only after treatment with the higher nano-TiO2 concentration. Further significant effects were detected showing mitotic index reduction and concentration-dependent increase in the aberration emergence that evidenced a nano-TiO2-induced genotoxic effect for both species. |
| Databáze: | OpenAIRE |
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