Publications by authors named "Alina D Burchardt"
In the following article an electron/ion microscopy study will be presented which investigates the uptake of silver nanoparticles (AgNPs) by the marine diatom Thalassiosira pseudonana, a primary producer aquatic species. This organism has a characteristic silica exoskeleton that may represent a barrier for the uptake of some chemical pollutants, including nanoparticles (NPs), but that presents a technical challenge when attempting to use electron-microscopy (EM) methods to study NP uptake. Here we present a convenient method to detect the NPs interacting with the diatom cell.
View Article and Find Full Text PDFThe aim of the present study was to investigate the effect of silver nanoparticles (AgNP) of different sizes toward two primary producer aquatic species. Thalassiosira pseudonana and Synechococcus sp. have been selected as representative models for the lower trophic organisms in marine and freshwater habitats, respectively.
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- * The study exposed diatoms to a mixture of polycyclic aromatic hydrocarbons (PAHs) from contaminated Mediterranean sediments and compared the results with exposure to individual PAHs, revealing gene regulation linked to stress response, silica uptake, and metabolism.
- * Findings indicate that while exposure to PAH mixtures and single compounds similarly affects gene expression, some gene responses differ, suggesting that certain genes related to silica uptake could serve as biomarkers for PAH exposure.