Elucidating the factors influencing the biodegradation of cylindrospermopsin in drinking water sources

Environmental Toxicology
Maree J SmithJustin D Brookes

Abstract

The cyanotoxin cylindrospermopsin (CYN) is produced by several species of cyanobacteria and can be persistent in drinking waters supplies, which is of major concern to water authorities because of its potential to severely compromise human health. Consequently, there is a need to fully understand the persistence of CYN in water supplies, in particular, to determine whether this toxin is readily degraded by endemic aquatic organisms. This study provides insights into the environmental factors that can influence the biodegradation of this toxin in Australian drinking water supplies. Biodegradation of CYN was only evident in water supplies that had a history of toxic Cylindrospermopsis raciborskii blooms. In addition, lag periods were evident prior to the onset of biodegradation; however, repeated exposure of the endemic organisms to CYN resulted in substantial decreases in the lag periods. Furthermore, the concentration of CYN was shown to influence biodegradation with a near linear relationship (R(2) of 0.9549) existing between the biodegradation rate and the initial CYN concentration. Temperature was also shown to affect the biodegradation of CYN, which is important since CYN is now being detected in more temperate climates. Th...Continue Reading

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Citations

Jul 11, 2013·BioMed Research International·Konstantinos Ar Kormas, Despoina S Lymperopoulou
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Jul 15, 2009·Toxicon : Official Journal of the International Society on Toxinology·Sondra KlitzkeIngrid Chorus
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Aug 30, 2019·Chemosphere·Erika Berenice Martínez-RuizUlrich Szewzyk
Dec 16, 2020·Journal of Hazardous Materials·Yiming YangRenhui Li
Dec 17, 2009·Environmental Science & Technology·Gesche GrützmacherIngrid Chorus
Aug 22, 2021·Environmental Science and Pollution Research International·Zakaria MohamedMohamed Hashem

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