Algae and Their Metabolites as Potential Bio-Pesticides

Area of Science:

• Marine Biology
• Biotechnology
• Agricultural Science

Background:

• Growing global population demands increased food production.
• Conventional pesticides pose environmental and health risks, facing public opposition.
• Algae possess diverse genomes shaped by evolution, producing valuable metabolites.

Purpose of the Study:

• To review the potential of algal metabolites as safe and sustainable biopesticides.
• To explore macroalgae and microalgae as sources of novel pest control agents.
• To discuss the mechanisms of action for algal-derived biopesticides.

Main Methods:

• Literature review of studies on algal extracts and purified compounds.
• Analysis of documented activities against plant pathogens and pests.
• Investigation of proposed mechanisms of action for identified metabolites.

Main Results:

• Algal compounds exhibit antibacterial, antiviral, antifungal, insecticidal, herbicidal, and plant growth-stimulating properties.
• Mechanisms include photosynthesis inhibition, induction of plant defenses, quorum sensing interference, and neurotoxicity.
• Antimetabolites show promise, with examples demonstrating antimicrobial and herbicidal effects.

Conclusions:

• Algae, particularly microalgae, are a rich, underexplored source of novel biopesticide compounds.
• Algal biopesticides offer a sustainable and environmentally friendly alternative to synthetic pesticides.
• Further research into algal metabolites can significantly contribute to sustainable agriculture.