Potential of Asparagopsis armata as a Biopesticide for Weed Control under an Invasive Seaweed Circular-Economy Framework

Marine macroalgae have been increasingly targeted as a source of bioactive compounds to be used in several areas, such as biopesticides. When harvesting invasive species, such as , for this purpose, there is a two-folded opportunity: acquiring these biomolecules from a low-cost resource and controll...

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Bibliographic Details
Published in:Biology (Basel, Switzerland) Switzerland), 2021-12, Vol.10 (12), p.1321
Main Authors: Duarte, Bernardo, Carreiras, João, Feijão, Eduardo, de Carvalho, Ricardo Cruz, Matos, Ana Rita, Fonseca, Vanessa F, Novais, Sara C, Lemos, Marco F L
Format: Article
Language:English
Subjects:
Abiotic stress
Algae
Asparagopsis armata
Bioactive compounds
Biopesticides
biorefinery
Cellulose acetate
Chemical pest control
Chloroplasts
Ecosystems
Electron transport chain
Energy transduction
herbicide
Introduced species
Invasive species
marine biotechnology
Metabolites
Oxidative metabolism
Oxidative stress
pesticide
Pesticides
Seawater
Seaweeds
Secondary metabolites
Weed control
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Summary:Marine macroalgae have been increasingly targeted as a source of bioactive compounds to be used in several areas, such as biopesticides. When harvesting invasive species, such as , for this purpose, there is a two-folded opportunity: acquiring these biomolecules from a low-cost resource and controlling its spreading and impacts. The secondary metabolites in this seaweed's exudate have been shown to significantly impact the physiology of species in the ecosystems where it invades, indicating a possible biocidal potential. Considering this in the present work, an exudate cocktail was applied in the model weed to evaluate its physiological impact and mode of action, addressing its potential use as a natural biocide. greatly affected the test plants' physiology, namely, their photochemical energy transduction pathway (impairing light-harvesting and chemical energy production throughout the chloroplast electron transport chain), carotenoid metabolism and oxidative stress. These mechanisms of action are similar to the ones triggered when using the common chemical pesticides, highlighting the potential of the exudate cocktail as an eco-friendly biopesticide.
ISSN:2079-7737
2079-7737
DOI:10.3390/biology10121321