Water blooms and toxins produced by cyanobacteria in the lower Suzdalskoe Lake (Saint-Petersburg, Russia)
Voloshko L.N. 1, 2, Pinevich A.V. 1, Kopecky J. 3, Titova N.N. 1, Hrouzek P. 3, Zelik P. 3- 1Department of Microbiology, St. Petersburg State University,
- 2, Oranienbaumskoye chausse, 198504 St. Petersburg, Russia
- e-mail: L.Voloshko@inbox.ru
- 2V.L. Komarov Institute of Botany, Russian Academy of Sciences,
- 2 Prof. Popov St., St. Petersburg 197376, Russia
- 3Institute of Microbiology, Academy of Sciences of Czech Republic,
- Vídeňská 1083, 14220 Praha 4, IČ 61388971, Czech Republic
The analysis of freeze-dried phytoplankton biomass extracts collected during the water bloom in the Lower Suzdalskoe Lake (St. Petersburg) was performed using a high efficiency liquid chromatography method. The analysis revealed the presence of hepatotoxic microcystin LA and LF in the biomass, as well as other biologically active compounds – protease inhibitors microcin SF608 and anabenopeptids A and F. Dangerous phytotoxins were not found in the biomass extract of the plankton dominant Planktothrix agardhii (Gom.) Anagn. et Kom. CALU1306. The presence of microcystins in the biomass is apparently due to the populations of other cyanobacteria (Microcystis (Kütz.) Elenk., Anabaena Bory, etc.). It has been concluded that the water bloom conditions require the effective control of environmental factors that cause eutrophication using chromatographic techniques, immunosorbent assays, and protein phosphatase tests.
Keywords: Suzdalskiye Lakes, water bloom, cyanobacteria (Cyanophyta), Planktothrix agardhii, biologically active substances, toxins
Full text: PDF 214K