Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.14279/19059
Title: Photosensitivity responses of: Sagittula stellata probed by FTIR, fluorescence and Raman microspectroscopy
Authors: Papageorgiou, Marios 
Tselios, Charalampos 
Varotsis, Constantinos 
Major Field of Science: Natural Sciences
Field Category: Chemical Sciences
Keywords: Bacteria;Copper compounds;Fluorescence;Fourier transform infrared spectroscopy;Light sensitive materials;Metal ions;Nucleic acids;Photosensitivity;Stretching;Zinc compounds
Issue Date: 2019
Source: RSC Advances, 2019, vol. 9, no. 47, pp. 27391-27397
Volume: 9
Issue: 47
Start page: 27391
End page: 27397
Journal: RSC Advances 
Abstract: Raman, fluorescence and FTIR experiments of prestine Sagittula stellata and Sagittula stellata-metal ion complexes grown in light and in dark were performed to probe the photosensitivity response of the cellular components in the marine bacterium. In the presence of Cu(ii) and Zn(ii) the frequency shifts of PO2-, C-O-C and C-O-P vibrations indicate metal binding to nucleic acids, carbohydrates and polysaccharides. We assign the observed bands in the 514.1 nm Raman spectra of the prestine S. Stellata and of the extracted carotenoids to the CC and C-C stretching vibrations. The fluorescence excitation-emission matrix (EEM) of S. stellata in light, dark and in the presence of metal ions are reported and compared with the Raman and FTIR data. The novel ability of S. stellata although heterotrophic, to show light-dependent metal binding ability may be an important feature property that maintains a stable heterotroph-prototroph interaction and a dynamic system.
URI: https://hdl.handle.net/20.500.14279/19059
ISSN: 20462069
DOI: 10.1039/c9ra03630j
Rights: © The Royal Society of Chemistry
Attribution-NonCommercial-NoDerivatives 4.0 International
Type: Article
Affiliation : Cyprus University of Technology 
Publication Type: Peer Reviewed
Appears in Collections:Άρθρα/Articles

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