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Microalgae-Bacteria Interactions in the Bio-based Circular Economy: Mechanisms and Biotechnological Applications
Claris Romy1, J V Neehara1, Maruthanayagam Veerabadhran2
1Phycoscience Lab (Microalgae Unit), Department of Plant Science, School of Biological Sciences, Central University of Kerala, Kasaragod, Kerala, 671325, India.
Current Microbiology
|April 9, 2026
Summary
Microalgae-bacteria consortia (MBC) offer sustainable cultivation for biomass production, improving bioremediation and reducing costs. These synergistic cultures enhance microalgal growth and valuable compound synthesis.
Area of Science:
- Biotechnology
- Microbiology
- Environmental Science
Background:
- Microalgae and cyanobacteria are key photosynthetic organisms for biomass production.
- Cultivating algae consortia in wastewater supports a circular bioeconomy and bioremediation.
- Pure microalgae cultures face contamination challenges in outdoor settings.
Purpose of the Study:
- To review interactions between microalgae and bacteria in natural environments.
- To explore the biotechnological applications of microalgae-bacteria consortia (MBC).
- To highlight the role of MBC in the bio-based circular economy.
Main Methods:
- Literature review of synergistic microalgae-bacteria cultivation.
- Analysis of bacterial associations and interactions governing microalgae growth.
- Assessment of biotechnological and circular economy applications.
Main Results:
- Microalgae-bacteria consortia (MBC) minimize contamination and enhance soil properties.
- Bacterial interactions stimulate the synthesis of carbohydrates, proteins, pigments, and lipids in microalgae.
- Synergistic cultivation reduces costs and improves biomass production compared to monocultures.
Conclusions:
- MBC cultivation is a sustainable approach for the circular bioeconomy.
- MBC enhances microalgal biomass value for food, feed, bioenergy, and biomolecules.
- Interactions within MBC are crucial for optimizing biotechnological applications and bioremediation.
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