BIOLOGIYA MORYA, 2916, Vol. 42, No. 5, pp. 393-396

Seasonal variations in metabolic activity of cells of Fucus vesiculosus Linnaeus, 1753 (Phaeophyta: Fucales) from the Barents Sea

© 2016 I. V. Ryzhik

Murmansk Marine Biological Institute, Kola Scientific Center, Russian Academy of Sciences, Murmansk 183010

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Cell metabolic activity is studied in the brown alga Fucus vesiculosus from the Barents Sea. Several phases of activity of physiological processes in cells of this alga during a year have been identified. The study shows that the onset and duration of three main phases of seasonal development of alga (resting phase, growth, and accumulation of reserve nutrients) can be determined based on the level and dynamics of cell metabolic activity. Each development phase in F. vesiculosus is characterized by a specific rhythm of daily metabolic activity of cells.

Key words: cell metabolic activity, Fucus vesiculosus, seasonal development, apical meristem, MTT assay, annual growth cycle, daily activity, Barents Sea.