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Oxidative metabolism of photosynthetic species and the exposure to some freshwater and marine biotoxins

1 Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Fisicoquímica, Buenos Aires, CP 1113, Argentina
2 CONICET-Universidad de Buenos Aires. Instituto de Bioquímica y Medicina Molecular (IBIMOL), Buenos Aires, CP 1113, Argentina
* Address correspondence to: Paula Mariela González,
(This article belongs to this Special Issue: Oxidative Stress in Aquatic Organisms)

BIOCELL 2021, 45(4), 813-821.

Received 12 December 2020; Accepted 01 February 2021; Issue published 22 April 2021


Environmental climate conditions could lead to an increasing global occurrence of microorganism blooms that synthesize toxins in the aquatic environments. These blooms could result in significantly toxic events. Responses of photosynthetic organisms to adverse environmental conditions implicate reactive oxygen species generation; but, due to the presence of a varied cellular antioxidant defense system and complex signaling networks, this oxidative stress could act as an important factor in the environmental adaptive processes. The objective of this review was to assess how some biotoxins are implicated in the generation of oxidative and nitrosative metabolic changes, not only in biotoxin-producing organisms but also in non-producing organisms. Therefore, toxins may modify the oxidative cellular balance of several other species. Hence, the effect of toxins on the oxidative and nitrosative conditions will be evaluated in freshwater and marine algae and vascular plants. The changing climate conditions could act as agents capable of modifying the community composition leading to alterations in the global health of the habitat, risking the survival of many species with ecological relevance.


Blooms, Climate change, Metabolic stress, Photosynthetic organisms, Toxins

Cite This Article

PUNTARULO, S., GONZÁLEZ, P. M. (2021). Oxidative metabolism of photosynthetic species and the exposure to some freshwater and marine biotoxins. BIOCELL, 45(4), 813–821.

This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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