| Literature DB >> 19223073 |
Sebastián E Sabatini1, Angela B Juárez, Maria R Eppis, Laura Bianchi, Carlos M Luquet, María del Carmen Ríos de Molina.
Abstract
The aim of this work was to assess the effects of 1 week copper exposure (6.2, 108, 210 and 414microM) on Scenedesmus vacuolatus and Chlorella kessleri. The strains showed different susceptibility to copper. Copper content was determined in both strains by total X-ray reflection fluorescence analysis (TXRF). In S. vacuolatus, the increase of medium copper concentration induced an augmentation of protein and MDA content, and a significant decrease in the chlorophyll a/chlorophyll b ratio. S. vacuolatus showed a significant increase of catalase activity in 210 and 414microM of copper, and a significant increment of SOD activity and GSH content only in 414microM of copper. On the contrary, C. kessleri did not show significant differences in these parameters between 6.2 and 108microM of copper. Increased copper in the environment evokes oxidative stress and an increase in the antioxidant defenses of S. vacuolatus.Entities:
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Year: 2009 PMID： 19223073 DOI： 10.1016/j.ecoenv.2009.01.003
Source DB: PubMed Journal: Ecotoxicol Environ Saf ISSN： 0147-6513 Impact factor: 6.291