Journal
TOXINS
Volume 13, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/toxins13050322
Keywords
algae; caves; cyanobacteria; cyanotoxins; cyanopeptides; deserts; human health risk; hypersaline habitats; phycotoxins; thermal springs
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Funding
- National Science Fund of the Bulgarian Ministry of Education and Science [KP-06-OPR06/2]
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This review summarizes the knowledge on toxins and their producers from diverse extreme environments, highlighting the potential importance and applications of algal toxins in the global ecosystem.
The review summarizes the available knowledge on toxins and their producers from rather disparate algal assemblages of aeroterrestrial, airborne and other versatile extreme environments (hot springs, deserts, ice, snow, caves, etc.) and on phycotoxins as contaminants of emergent concern in soil and plants. There is a growing body of evidence that algal toxins and their producers occur in all general types of extreme habitats, and cyanobacteria/cyanoprokaryotes dominate in most of them. Altogether, 55 toxigenic algal genera (47 cyanoprokaryotes) were enlisted, and our analysis showed that besides the standard toxins, routinely known from different waterbodies (microcystins, nodularins, anatoxins, saxitoxins, cylindrospermopsins, BMAA, etc.), they can produce some specific toxic compounds. Whether the toxic biomolecules are related with the harsh conditions on which algae have to thrive and what is their functional role may be answered by future studies. Therefore, we outline the gaps in knowledge and provide ideas for further research, considering, from one side, the health risk from phycotoxins on the background of the global warming and eutrophication and, from the other side, the current surge of interest which phycotoxins provoke due to their potential as novel compounds in medicine, pharmacy, cosmetics, bioremediation, agriculture and all aspects of biotechnological implications in human life.
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