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Effects of copper on growth rate, cell shape, motility and photosynthesis in the green flagellate Euglena gracilis in a long-term experiment
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
2000 (English)In: Biologia (Bratislava), ISSN 0006-3088, E-ISSN 1336-9563, Vol. 55, no 4, 413-418 p.Article in journal (Refereed) Published
Abstract [en]

The green flagellate Euglena gracilis was treated for seven days with concentrations of copper ranging from 0.02 mg L-1 to 2.0 mg L-1. No inhibiting effects were detected in any physiological parameters measured. In general, it seems that enhanced copper concentrations stimulated photosynthetic efficiency (PE) of E. gracilis. Concentrations of copper reported to be critical for the other algae studied (from 0.10 mg L-1 to 0.14 mg L-1) did not show any severe negative effects on E. gracilis. An unusual trend was observed where an increase in PE was followed by an increase in light irradiance necessary to achieve light compensation point. High capacity of E. gracilis to adapt to copper stress is being discussed as a possible explanation for the trends detected.

Place, publisher, year, edition, pages
2000. Vol. 55, no 4, 413-418 p.
Keyword [en]
Euglena gracilis, bioassay, copper, photosynthesis, water pollution
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:miun:diva-7523ISI: 000089732200017Scopus ID: 2-s2.0-0013426353OAI: oai:DiVA.org:miun-7523DiVA: diva2:127670
Available from: 2008-12-09 Created: 2008-12-09 Last updated: 2016-10-08Bibliographically approved

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