Abstract
The effect of copper (10, 25 and 50 μg/L) on the population growth, physiological state, and ultrastructure of the microalga Heterosigma akashiwo (Raphidophyceae) were studied. Copper had a greater effect on the mitochondrial membrane potential than on chlorophyll a fluorescence. The neutral lipid content was lower in the exposed cell than in control cells throughout the experiment. The morphology of organelles was not altered at any copper concentration; however, the number of vacuoles in the algal cells increased at 25 and 50 μg Cu/L.
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ACKNOWLEDGMENTS
The author thanks Miroslava A. Sabutskaya (National Scientific Center of Marine Biology FEB RAS) for her help in discussing the results of ultrastructural analysis. The culture of the microalga Heterosigma akashiwo MBRU_HAK-SR11 was provided by the Marine BioBank of the NSCMB FEB RAS (http://marbank.dvo.ru). The flow cytometric analysis was performed at the NSCMB FEB RAS. The author is sincerely grateful to the staff of the Laboratory of Cell Technologies for their help in this research.
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Markina, Z.V. The Cell Ultrastructure and Autotrophic Function of the Raphidophyte Alga Heterosigma akashiwo (Y. Hada) Y. Hada ex Y. Hara and M. Chihara, 1987 under Copper Exposure. Russ J Mar Biol 47, 204–209 (2021). https://doi.org/10.1134/S106307402103007X
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DOI: https://doi.org/10.1134/S106307402103007X