A review of allelopathy on microalgae

Area of Science:

• Environmental Science
• Aquatic Ecology
• Biotechnology

Background:

• Harmful algal blooms (HABs) significantly degrade water resource quality and ecosystem health.
• Allelopathy, a natural phenomenon involving chemical interactions, presents a promising avenue for sustainable bloom control.
• Existing methods for managing algal blooms often have limitations in efficiency, safety, or cost-effectiveness.

Purpose of the Study:

• To investigate the potential of allelopathy and its derived allelochemicals for controlling microalgal growth.
• To elucidate the mechanisms by which allelopathy affects microalgal cells.
• To propose practical applications of allelochemicals in managing water environments affected by algal blooms.

Main Methods:

• Identification and characterization of allelochemicals from plant and algal sources.
• Experimental assessment of the inhibitory effects of allelochemicals on microalgal growth and physiology.
• Analysis of the impact of allelochemicals on algal cell structure, photosynthesis, and enzyme activity.

Main Results:

• Demonstration of significant growth inhibition of microalgae by plant- and algae-derived allelochemicals.
• Elucidation of key mechanisms including disruption of cell structure, impairment of photosynthesis, and reduced enzyme activity.
• Evidence supporting the efficacy of allelopathy as a biological control strategy against harmful algal blooms.

Conclusions:

• Allelopathy is a viable and sustainable strategy for managing harmful algal blooms.
• Allelochemicals derived from natural sources offer a safe, efficient, and economical approach to water resource protection.
• Further research into allelochemicals holds significant potential for innovative water quality management solutions.