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Hydrobiological Journal
SJR: 0.227 SNIP: 0.575 CiteScore™: 0.24

ISSN Print: 0018-8166
ISSN Online: 1943-5991

Hydrobiological Journal

DOI: 10.1615/HydrobJ.v51.i6.40
pages 36-47

Effect of Octyl- and Nonylphenols on Growth Photosynthetic Activity and Toxins' Forming of Cyanobacteria Planktothrix Agardhii

T. B. Zaitseva
St Petersburg Research Center of Environmental Safety Russian Academy of Sciences St Petersburg, Russia
B. L. Milman
Research Center of Experimental Medicine
N.V. Lugovkina
Research Center of Experimental Medicine
Ye. N. Chernova
St Petersburg Research Center of Environmental Safety Russian Academy of Sciences St Petersburg, Russia
Ya. V. Russkikh
St Petersburg Research Center of Environmental Safety Russian Academy of Sciences St Petersburg, Russia
S. M. Satayeva
St Petersburg State Technological Institute St Petersburg, Russia
N. G. Medvedeva
Saint-Petersburg Scientific-Research Center of Ecological Safety Russian Academy of Sciences Saint-Petersburg, Russian

ABSTRACT

The effect of octyl- and nonylphenols on growth, photosynthesis and toxin production by the bloom-forming Cyanobacteria Planktothrix agardhii was investigated. Alkylphenols were shown to inhibit growth of algae, at this inhibition rate decreases over cultivation. One of the reasons is decrease of alkylphenols concentration because of abiotic and biological processes. Growth inhibition of P. agardhii by alkylphenols is accompanied by increase of photosynthetic pigments synthesis. Considered culture P. agardhii was shown to produce several microcystins, the main of which is demethylated microcystin-RR (dm-RR). Under alkylphenols-induced stress toxins production is stimulated and concentration of extra-cellular dm-RR increases.


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