Use of elicitors from macroalgae and microalgae in the management of pests and diseases in agriculture

Feeding a growing population is a big challenge for agriculture, being necessary for new and ecological alternatives to reduce chemical fertilizers and pesticides. Scientists have found that microand macroalgae are essential reservoirs of chemical compounds with a high potential role as biopesticide...

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Bibliographic Details
Published in:Phytoparasitica 2023-09, Vol.51 (4), p.667-701
Main Authors: Poveda, Jorge, Díez-Méndez, Alexandra
Format: Article
Language:English
Subjects:
Agricultural development
Agriculture
Agrochemicals
Algae
Alginates
Alginic acid
Aquatic microorganisms
Bacteria
Biological control
Biomedical and Life Sciences
Biopesticides
Carrageenan
Chemical compounds
Crops
Defense mechanisms
Ecology
Exopolysaccharides
Fungi
Glucosamine
Insects
Lactic acid
Laminarin
Life Sciences
Microalgae
Pathogens
Pesticides
Pests
Plant defenses
Plant Pathology
Plant Sciences
Polysaccharides
Review
Saccharides
Seaweeds
Sustainable agriculture
Sustainable development
Systemic resistance
Ulvan
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Summary:Feeding a growing population is a big challenge for agriculture, being necessary for new and ecological alternatives to reduce chemical fertilizers and pesticides. Scientists have found that microand macroalgae are essential reservoirs of chemical compounds with a high potential role as biopesticides. Some of these molecules can act as elicitors, activating systemic and local defensive responses even without biotic stress. Among elicitors from macroalgae, there are ulvans, laminarin, alginate, carrageenan, glucuronan, fucans and tannins, which can activate plant defenses against viruses, bacteria, fungi, oomycetes, nematodes, and insects. The induction of defense mechanisms on crops by microalgae is related to their application as biomass, polysaccharides, exopolysaccharide or other elicitors, such as lactic acid or glucosamine. Unlike macroalgae, the biopesticide effect by microalgae has only been described against bacteria, fungi, and oomycetes, being necessary more studies to elucidate and discover their role as elicitors. In general, both macroand microalgae are sources of compounds with great potential as biopesticides following the current needs for the development of sustainable agriculture. Grants for the Recualification of the Spanish University System for 2021–2023, Public University of Navarra; Recualification Modality; Funded by the European Union – NextGenerationEU.
ISSN:0334-2123
1876-7184
DOI:10.1007/s12600-022-01009-y