naa a22 4500 510751547 CHVBK 20180411083106.0 cr unu---uuuuu 180411e20130401xx s 000 0 eng 10.1007/s11270-013-1494-4 doi (NATIONALLICENCE)springer-10.1007/s11270-013-1494-4 Response of Toxic Cyanobacterium Microcystis aeruginosa to Environmental Pollution [Elektronische Daten] [Yulia Polyak, Tatyana Zaytseva, Nadezda Medvedeva] A better understanding of the effect of anthropogenic pollution on the formation of toxic Microcystis blooms is particularly important in regions with large urban centres where rivers, lakes, and estuaries receive large quantities of contaminated domestic and industrial wastes. The response of the bloom-forming cyanobacteria Microcystis aeruginosa CALU 972 and CALU 973 from Russian Karelia to pollution was investigated. The contaminants caused compensatory-adaptive changes that led to the retention of cell viability in the cyanobacterial cells. The adaptation to metals and 1,2,4-triazole was realised due to photosystem changes and the enhanced production of organic compounds, such as proteins and exopolysaccharides. Nutrients caused a significant increase in biomass production by M. aeruginosa. The exposure of M. aeruginosa to nutrients and zinc stimulated growth and contributed to enhanced microcystin concentrations. Variants of microcystins responded differently to pollution. Contaminants had pronounced effects on microcystin RR levels but less effects on microcystin LR levels. Heavy metals, 1,2,4-triazole and nitrogen influenced microcystin concentrations by affecting both the growth of Microcystis and hepatotoxin release into the environment. Springer Science+Business Media Dordrecht, 2013 Environmental pollution nationallicence Bloom-forming cyanobacteria nationallicence Microcystis nationallicence Hepatotoxins nationallicence Polyak Yulia Institution of Russian Academy of Sciences, Saint Petersburg Scientific Research Centre for Ecological Safety RAS, Korpusnaya str. 18, 197110, Saint Petersburg, Russia aut Zaytseva Tatyana Institution of Russian Academy of Sciences, Saint Petersburg Scientific Research Centre for Ecological Safety RAS, Korpusnaya str. 18, 197110, Saint Petersburg, Russia aut Medvedeva Nadezda Institution of Russian Academy of Sciences, Saint Petersburg Scientific Research Centre for Ecological Safety RAS, Korpusnaya str. 18, 197110, Saint Petersburg, Russia aut Water, Air, & Soil Pollution Springer Netherlands 224/4(2013-04-01), 1-14 0049-6979 224:4<1 2013 224 11270 https://doi.org/10.1007/s11270-013-1494-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-013-1494-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Polyak Yulia Institution of Russian Academy of Sciences, Saint Petersburg Scientific Research Centre for Ecological Safety RAS, Korpusnaya str. 18, 197110, Saint Petersburg, Russia aut NATIONALLICENCE 700 1- Zaytseva Tatyana Institution of Russian Academy of Sciences, Saint Petersburg Scientific Research Centre for Ecological Safety RAS, Korpusnaya str. 18, 197110, Saint Petersburg, Russia aut NATIONALLICENCE 700 1- Medvedeva Nadezda Institution of Russian Academy of Sciences, Saint Petersburg Scientific Research Centre for Ecological Safety RAS, Korpusnaya str. 18, 197110, Saint Petersburg, Russia aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/4(2013-04-01), 1-14 0049-6979 224:4<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer