Journal
MICROORGANISMS
Volume 11, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/microorganisms11040851
Keywords
cyanobacteria; harmful algal blooms; Great Lakes; cyanotoxins; microcystin; cyanobacteria lysis; molecular methods
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Cyanobacteria can form harmful algal blooms in eutrophic freshwater ecosystems, posing a threat to wildlife, public health, and recreational waters. Molecular methods are increasingly recommended for the detection and quantification of cyanobacteria and cyanotoxins. However, each molecular detection method has its own advantages and limitations for monitoring algal blooms. Integration of modern technologies such as satellite imaging, biosensors, and machine learning/artificial intelligence can help overcome these limitations.
Cyanobacteria (blue-green algae) can accumulate to form harmful algal blooms (HABs) on the surface of freshwater ecosystems under eutrophic conditions. Extensive HAB events can threaten local wildlife, public health, and the utilization of recreational waters. For the detection/quantification of cyanobacteria and cyanotoxins, both the United States Environmental Protection Agency (USEPA) and Health Canada increasingly indicate that molecular methods can be useful. However, each molecular detection method has specific advantages and limitations for monitoring HABs in recreational water ecosystems. Rapidly developing modern technologies, including satellite imaging, biosensors, and machine learning/artificial intelligence, can be integrated with standard/conventional methods to overcome the limitations associated with traditional cyanobacterial detection methodology. We examine advances in cyanobacterial cell lysis methodology and conventional/modern molecular detection methods, including imaging techniques, polymerase chain reaction (PCR)/DNA sequencing, enzyme-linked immunosorbent assays (ELISA), mass spectrometry, remote sensing, and machine learning/AI-based prediction models. This review focuses specifically on methodologies likely to be employed for recreational water ecosystems, especially in the Great Lakes region of North America.
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