Rescue of heavy metal effects on cell physiology of the algal model system Micrasterias by divalent ions |
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Authors: | Stefanie Volland Elisabeth Bayer Verena Baumgartner Ancuela Andosch Cornelius Lütz Evelyn Sima Ursula Lütz-Meindl |
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Institution: | 1. Plant Physiology Division, Cell Biology Department, University of Salzburg, Hellbrunnerstraße 34, 5020 Salzburg, Austria;2. Institute of Botany, Faculty of Biology, University of Innsbruck, Sternwartestraße 15, 6020 Innsbruck, Austria |
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Abstract: | Recent studies have shown that metals such as copper, zinc, aluminum, cadmium, chromium, iron and lead cause severe dose-dependent disturbances in growth, morphogenesis, photosynthetic and respiratory activity as well as on ultrastructure and function of organelles in the algal model system Micrasterias denticulata ( Volland et al., 2011, Volland et al., 2012 and Andosch et al., 2012). In the present investigation we focus on amelioration of these adverse effects of cadmium, chromium and lead by supplying the cells with different antioxidants and essential micronutrients to obtain insight into metal uptake mechanisms and subcellular metal targets. This seems particularly interesting as Micrasterias is adapted to extremely low-concentrated, oligotrophic conditions in its natural bog environment. |
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Keywords: | AA ascorbic acid Ca calcium Cd cadmium Cr chromium EELS electron energy loss spectroscopy ESI electron spectroscopic imaging Fe iron Fe-EDTA Fe-ethylenediaminetetraacetic acid Gd gadolinium GSH glutathione HPLC high-performance liquid chromatography Pb lead PS II photosystem II ROS reactive oxygen species TEM transmission electron microscopy SA salicylic acid UPLC-MS ultra performance liquid chromatography&ndash mass spectrometry Zn zinc |
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