Seasonal dynamics of cylindrospermopsin and cyanobacteria in two German lakes

Toxicon : Official Journal of the International Society on Toxinology
Claudia WiednerBrigitte Nixdorf

Abstract

Cylindrospermopsin (CYN) is a potent hepatotoxin produced by different cyanobacteria of the order Nostocales. Questions of major concern are: which species produce CYN, which are the seasonal patterns of CYN dynamics and how are they regulated? Therefore, we studied for the first time the seasonal dynamics of particulate and dissolved CYN concentrations, cyanobacterial abundance and environmental factors in two German lakes over 2 years. Total CYN reached maximum concentrations of 0.34 and 1.80 microg L(-1) in Melangsee and Langer See, respectively. In both lakes, maxima of the dissolved CYN fraction occurred later in the season than those of the particulate fraction, and it reached higher concentrations. This indicates that CYN is poorly decomposed and accumulates in the water. The cyanobacterial community in both lakes included several potentially CYN-producing species that did not correlate with CYN concentrations. Significant correlations between the particulate CYN concentrations and species biovolume were only found for Aphanizomenon gracile (r(s)=0.803) in Langer See indicating that this species is a CYN producer. Different correlations of CYN with abiotic factors in the two lakes indicate the presence of further undetec...Continue Reading

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Citations

Mar 25, 2014·Environmental Science and Pollution Research International·Daniel JančulaPavel Babica
Jan 6, 2010·Applied and Environmental Microbiology·Andreas BallotClaudia Wiedner
Feb 5, 2013·Environmental Science and Pollution Research International·Mikołaj KokocińskiJanne Soininen
Sep 24, 2013·Environmental Science. Processes & Impacts·Armah A de la CruzDionysios D Dionysiou
Jan 7, 2016·Environmental Science & Technology·Shuwen YanWeihua Song
Oct 31, 2009·Toxicon : Official Journal of the International Society on Toxinology·Sylvain MerelOlivier Thomas
Aug 13, 2009·Toxicon : Official Journal of the International Society on Toxinology·Lucie BláhováLudek Bláha
Sep 19, 2012·Environmental Toxicology and Pharmacology·Barbara PoniedziałekMikołaj Kokociński
Nov 19, 2011·FEMS Microbiology Letters·Joanna Mankiewicz-BoczekJarosław Dziadek
Nov 9, 2014·Archives of Microbiology·Cristiana MoreiraAgostinho Antunes
Oct 29, 2018·Environmental Science and Pollution Research International·Zakaria A Mohamed, Asmaa Bakr
Dec 16, 2020·Journal of Hazardous Materials·Yiming YangRenhui Li

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