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Authors
Advisor(s)
Abstract(s)
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.
Description
Keywords
Biopesticides Plant defenses Systemic resistance Ulvan Carrageenan
Pedagogical Context
Citation
Poveda, Jorge; Díez-Méndez, Alexandra (2023). Use of elicitors from macroalgae and microalgae in the management of pests and diseases in agriculture. Phytoparasitica. ISSN 0334-2123. 51:4, p. 667–701
Publisher
Springer