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Influence of long-term exposure to copper on the lichen photobiont Trebouxia erici and the free-living algae Scenedesmus quadricauda

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Abstract

In the present work, the long-term effect (14 days) of copper on the levels of intracellular and total copper accumulation, growth, assimilation pigment composition, chlorophyll a fluorescence, soluble protein content and oxidative status (production of hydrogen peroxide and superoxide) in two algal species (Scenedesmus quadricauda and Trebouxia erici) was assessed. Scenedesmus quadricauda is a free-living alga while Trebouxia erici is the photobiont of a lichen. The presence of copper negatively affected growth, assimilation pigments, chlorophyll a fluorescence, soluble protein content and oxidative status in both the algae. However, Scenedesmus was much more sensitive compared to Trebouxia.

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Abbreviations

Chl:

Chlorophyll.

Fw:

Fresh weight

Perox:

Hydrogen peroxide

Prot:

Soluble proteins

Superox:

Superoxide

Tot Car:

Total carotenoids

ROS:

Reactive oxygen species

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Acknowledgments

This work was financially supported by Slovak Grant Agency (VEGA 1/0521/10). Thanks are expressed to Prof. Dianne Fahselt (UWO, Canada) for comments on the manuscript.

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Correspondence to Martin Bačkor.

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Piovár, J., Stavrou, E., Kaduková, J. et al. Influence of long-term exposure to copper on the lichen photobiont Trebouxia erici and the free-living algae Scenedesmus quadricauda . Plant Growth Regul 63, 81–88 (2011). https://doi.org/10.1007/s10725-010-9515-4

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