Journal
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
Volume 39, Issue 9, Pages -Publisher
SPRINGER
DOI: 10.1007/s11274-023-03652-x
Keywords
Anatoxins; Biosynthesis; Cyanotoxins; Cylindrospermopsins; Environmental factors; Gene expression; Microcystins; Saxitoxins
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Cyanobacterial harmful algal blooms (CHABs) are a global environmental concern due to their production of cyanotoxins that impact public health, water availability, and water quality. The frequency, extent, magnitude, and duration of CHABs are increasing globally. Modern molecular biology techniques have provided insights into cyanobacterial diversity, gene-environment interactions, and cyanotoxin production.
Cyanobacterial harmful algal blooms (CHABs) are a global environmental concern that encompasses public health issues, water availability, and water quality owing to the production of various secondary metabolites (SMs), including cyanotoxins in freshwater, brackish water, and marine ecosystems. The frequency, extent, magnitude, and duration of CHABs are increasing globally. Cyanobacterial species traits and changing environmental conditions, including anthropogenic pressure, eutrophication, and global climate change, together allow cyanobacteria to thrive. The cyanotoxins include a diverse range of low molecular weight compounds with varying biochemical properties and modes of action. With the application of modern molecular biology techniques, many important aspects of cyanobacteria are being elucidated, including aspects of their diversity, gene-environment interactions, and genes that express cyanotoxins. The toxicological, environmental, and economic impacts of CHABs strongly advocate the need for continuing, extensive efforts to monitor cyanobacterial growth and to understand the mechanisms regulating species composition and cyanotoxin biosynthesis. In this review, we critically examined the genomic organization of some cyanobacterial species that lead to the production of cyanotoxins and their characteristic properties discovered to date.
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