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Journal of Nanomaterials
Volume 2015, Article ID 470250, 7 pages
http://dx.doi.org/10.1155/2015/470250
Research Article

The Impact of CdS Nanoparticles on Ploidy and DNA Damage of Rucola (Eruca sativa Mill.) Plants

1Institute of Life Sciences and Technologies, Daugavpils University, Parādes 1a, Daugavpils LV-5401, Latvia
2Institute of Solid State Physics, University of Latvia, Kengaraga 8, Rīga LV-1063, Latvia

Received 20 July 2015; Revised 4 November 2015; Accepted 9 November 2015

Academic Editor: Subrata Kundu

Copyright © 2015 Inese Kokina et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The genotoxic effect of cadmium sulfide nanoparticles (CdS NPs) of different sizes in rucola (Eruca sativa Mill.) plants was assessed. It was confirmed that nanoparticles < 5 nm in size were more toxic than larger particles at an identical mass concentration. Significant differences in cell ploidy, as well as in the mitotic index, were detected between control and treated samples. Differences in the DNA banding pattern between control samples and samples after treatment with cadmium sulfide nanoparticles were significant and detected at different places as the appearance or elimination of DNA fragments. Fluorescence images showed that cadmium sulfide nanoparticles smaller than 5 nm in size can diffuse through the membrane and their presence affects the genetic system of the plant.