EFFECT OF FRESH WATER ON FLUORESCENCE INDUCTION PARAMETERS OF FUCUS GENUS REPRESENTATIVES UNDER THE CONDITIONS OF THE WHITE SEA
https://doi.org/ 10.21285/2227-2925-2017-7-3-75-83
Abstract
The fluorescence induction method (PAM method) was used to evaluate the condition of the photosynthetic Fucus apparatus before and during freshening, as well as after returning to seawater. The intensity of fluorescence varied little both with open (F0) and with closed reaction centres (Fm). The maximum quantum yield of photochemistry (Fv/ Fm) in fresh water hardly changed, and the effective quantum yield of photochemistry (YII) decreased during freshening for 2-3 days. The photochemical activity of F. vesiculosus L. and F. distichus L. was restored within 60 hours after the algae had returned to the sea. In F. serratus L., complete recovery did not occur. The PAM method did not reveal differences in the induction parameters of F. vesiculosus fluorescence taken from habitats with different salinity. Against the background of the freshening factor, various adaptive possibilities of littoral and sublittoral fucoids are shown.
About the Authors
V. P. Andreev
Military Medical Academy named after S.M. Kirov
Russian Federation
Russian Federation
Z. V. Plakhotskaya
Military Medical Academy named after S.M. Kirov
Russian Federation
Russian Federation
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Review
For citations:
Andreev V.P., Plakhotskaya Z.V. EFFECT OF FRESH WATER ON FLUORESCENCE INDUCTION PARAMETERS OF FUCUS GENUS REPRESENTATIVES UNDER THE CONDITIONS OF THE WHITE SEA. Proceedings of Universities. Applied Chemistry and Biotechnology. 2017;7(3):75-83. (In Russ.) https://doi.org/ 10.21285/2227-2925-2017-7-3-75-83
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