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

PUNTARULO S.; GONZÁLEZ, P.M.,

Biocell

Tech Science Press

Año: 2021 vol. 45 p. 813 - 821

Environmental climate conditions could lead to anincreasing global occurrence of microorganism blooms that synthesize toxins inthe aquatic environments. These blooms could result in significantly toxicevents. Responses of photosynthetic organisms to adverse environmentalconditions implicate reactive oxygen species generation, but due to thepresence of a varied cellular antioxidant defense system and complex signalingnetworks, this oxidative stress could act as an important factor in theenvironmental adaptive processes. The objective of this review was to assesshow some biotoxins are implicated in the generation of oxidative andnitrosative metabolic changes, not only in biotoxin-producing organisms butalso in non-producing organisms. Therefore, toxins may modify the oxidativecellular balance of several other species. Hence, theeffect of toxins on the oxidative and nitrosative conditions will beevaluated in freshwater and marine algae and vascular plants. The changing climate conditions could act as agents capableof modifying the community composition leading to alterations in the globalhealth of the habitat, risking the survival of many species with ecologicalrelevance.