Hidrológiai Közlöny, 2014 (94. évfolyam)
2014 / 5-6. különszám - LV. Hidrobiológus Napok előadásai
73 quus and Desmodesmus pleiomorphus, from Northern Portugal. Jo- úmal of Applied Phycology 23: 97-103. Naja GM, Murphy V, Volesky B (2010) Biosorption, Metals. In: Flick- linger M (editor): Encyclopedia of Industrial Biotechnology. New York, Wiley Interscience. Omar HH (2002) Bioremoval of zinc ions by Scenedesmus obliquus and Scenedesmus quadricauda and its effect on growth and metabolism. International Biodeterioration & Biodegradation 50:95-100 Perales-Vela HV, Pena-Castro JM and Canizares-Villaneuva RO (2006) Heavy metal detoxification in eukaryotic microalgae. Che- mosphere 64: 1-10. Piovár J, Stavrou E, Kaduková J, Kimáková T, Backor M (2011) Influence of long-term exposure to copper on the lichen photobiont Tre- bouxia erici and the free-living algae Scenedesmus quadricauda. Plant Growth Regulation 63: 81-88. Sabatini S.E., Juárez A.B., Eppis M.R., Bianchi L., Luquet C.M., Molina M.C.R. (2009) Oxidative stress and antioxidant defenses in two Characterisation of copper-tolerance and copper accumulation of the green alga Desmodesmus communis Novák Z., Szeműn A., Jánószky M., Nagy S.A., Bácsi I. Abstract: Nowadays one of the most important problems is the environmental contamination. Certain metals belong to the main contaminants, copper among them, which is an essential element but could become toxic in higher concentration. Copper is one of the most frequent metal contaminant in Hungarian surface waters or wastewaters. In this study, the copper tolerance and copper removal ability of a widespread green alga species, Desmodesmus communis was investigated. Lower copper concentration (0.2 mg l'1) stimulated the growth of the cultures. Growth of coenobia number and chlorophyll content was totally inhibited in cultures treated with 1 mg l'1 or higher copper concentrations. Copper removal of living cells can be taken into consideration up to 1 mg l'1 copper concentration. The amount of removed copper was the highest in the first half of culturing and the removed copper was mainly intracellular. The results show, that the studied D. communis strain is sensitive to copper, application of living biomass in copper removal is not recommended. Comparing the results with literary data, it can be concluded that copper tolerance and copper removal ability is species-specific, even within a species, the different isolates could also show differences. Keywords: Desmodesmus communis, heavy metal contamination, copper, biological metal removal. green microalgae exposed to copper. Ecotoxicology and Environmental Safety 72: 1200-1206. Tien CJ (2002) Biosorption of metal ions by freshwater algae with different surface characteristics. Process Biochemistry 38: 605-613. Travieso L, Canizares RO, Borja R, Benitez F, Dominguez AR, Dupe- yron R and Valiente V (1999) Heavy Metal Removal by Microalgae. Bulletin of Environmental Contamination and Toxicology 62: 144-151. Tripathi BN, Gaur JP (2006) Physiological behavior of Scenedesmus sp. during exposure to elevated levels of Cu and Zn and after withdrawal of metal stress. Protoplasma 229: 1-9. Yruela GI (2005) Copper in plants. Brazilian Journal of Plant Physiology 17(1): 145-156.
