Chlorophyll Fluorescence of Summer Phytoplankton in Reservoirs of the Zvenigorod Biological Station of Moscow State University
- Autores: Matorin D.1, Timofeev N.1, Sindalovskaya M.1, Shidlovskaya N.1, Todorenko D.1, Alekseev A.2
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Afiliações:
- Department of Biology, Moscow State University
- Institute of Physics and Technologies, Ammosov Northeastern Federal University
- Edição: Volume 64, Nº 6 (2019)
- Páginas: 858-865
- Seção: Molecular Biophysics
- URL: https://journals.rcsi.science/0006-3509/article/view/153127
- DOI: https://doi.org/10.1134/S0006350919060149
- ID: 153127
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Resumo
The results of long-term observations and monitoring of three reservoirs of Zvenigorod Biological Station of Moscow State University using modern chlorophyll fluorescence methods are presented. A sharp increase in chlorophyll content (up to 431 μg/L) and photosynthesis activity (FV/FM up to 0.7) associated with the growth of a monoculture, Chlorella vulgaris, was found in 2017 Pozharnyi Pond pond constructed near University dormitory facilities. The high activity of light reactions of this phytoplankton was evident as changes in the following parameters: the maximum quantum yield of primary photochemistry in photosystem II (FV/FM), the maximum relative electron transport rate (ETRmax), maximal light utilization coefficient (α), the efficiency of electron transport (φEo) and the performance index of photosystem II (PIABS) increased. This was accompanied by a decrease in the density of QB-non-reducing centers (VJ) and dissipated energy flux per reaction center (DI0/RC). The most sensitive parameters of fluorescence induction curve (PIABS and φEo) and the coefficient of maximal light utilization coefficient (α) are proposed to monitor the state of phytoplankton in reservoirs.
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Sobre autores
D. Matorin
Department of Biology, Moscow State University
Autor responsável pela correspondência
Email: matorin@biophys.msu.ru
Rússia, Moscow, 119234
N. Timofeev
Department of Biology, Moscow State University
Email: matorin@biophys.msu.ru
Rússia, Moscow, 119234
M. Sindalovskaya
Department of Biology, Moscow State University
Email: matorin@biophys.msu.ru
Rússia, Moscow, 119234
N. Shidlovskaya
Department of Biology, Moscow State University
Email: matorin@biophys.msu.ru
Rússia, Moscow, 119234
D. Todorenko
Department of Biology, Moscow State University
Email: matorin@biophys.msu.ru
Rússia, Moscow, 119234
A. Alekseev
Institute of Physics and Technologies, Ammosov Northeastern Federal University
Email: matorin@biophys.msu.ru
Rússia, Yakutsk, Republic of Sakha (Yakutia), 677010