engleski

Selenium in Algae: Bioaccumulation and Toxicity

Algae can absorb and accumulate exogenous selenium (Se) from their environment through physicochemical and biological mechanisms. Nutritional essentiality to Se, the dose and Se speciation influence its uptake in different algal taxa and represent crucial factors in their cellular response. This chapter summarises previous studies and key concepts regarding Se utilisation, transport and accumulation in algae, its protective and regulatory role as well as interference of Se with sulphur metabolism and its toxicity. It highlights the importance of the algal Se detoxification strategy, especially the role of selenoenzymes and other selenoproteins with antioxidant function. The ecological aspect of Se resources, the role of algae in its biotransformation and cycling in aquatic environments is also addressed. In addition, the potential of algae as Se bioindicators and accumulators, and their applications are presented.

Microalgae ; Phytoplankton ; Periphyton ; Seaweeds ; Selenoenzymes ; Selenoproteins ; Oxidative stress ; Antioxidants ; Bioaccumulation

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