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A Review on the Study of Cyanotoxins in Paleolimnological Research: Current Knowledge and Future Needs

Department of Biology, Universidad del Valle, 100-00 Cali, Colombia
Department of Environmental Medicine, Poznan University of Medical Sciences, 60-806 Poznan, Poland
Department of Crop, Soil and Environmental Sciences, Auburn University, Funchess Hall, AL 36849, USA
Authors to whom correspondence should be addressed.
Received: 4 December 2019 / Revised: 17 December 2019 / Accepted: 18 December 2019 / Published: 20 December 2019
(This article belongs to the Special Issue Biological Role of Cyanotoxins: Experimental and In-Field Evidence)
Cyanobacterial metabolites are increasingly studied, in regards to their biosynthesis, ecological role, toxicity, and potential biomedical applications. However, the history of cyanotoxins prior to the last few decades is virtually unknown. Only a few paleolimnological studies have been undertaken to date, and these have focused exclusively on microcystins and cylindrospermopsins, both successfully identified in lake sediments up to 200 and 4700 years old, respectively. In this paper, we review direct extraction, quantification, and application of cyanotoxins in sediment cores, and put forward future research prospects in this field. Cyanobacterial toxin research is also compared to other paleo-cyanobacteria tools, such as sedimentary pigments, akinetes, and ancient DNA isolation, to identify the role of each tool in reproducing the history of cyanobacteria. Such investigations may also be beneficial for further elucidation of the biological role of cyanotoxins, particularly if coupled with analyses of other abiotic and biotic sedimentary features. In addition, we identify current limitations as well as future directions for applications in the field of paleolimnological studies on cyanotoxins. View Full-Text
Keywords: cyanobacteria; paleolimnology; cyanotoxins; microcystins; cylindrospermopsin cyanobacteria; paleolimnology; cyanotoxins; microcystins; cylindrospermopsin
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Henao, E.; Rzymski, P.; Waters, M.N. A Review on the Study of Cyanotoxins in Paleolimnological Research: Current Knowledge and Future Needs. Toxins 2020, 12, 6.

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