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Updated: Nov 11, 2025

A Novel Bioreactor for High Density Cultivation of Diverse Microbial Communities

A Novel Bioreactor for High Density Cultivation of Diverse Microbial Communities

Published on: December 25, 2015

Bacterial coaggregation in aquatic systems.

Ana C Afonso¹, Inês B Gomes¹, Maria José Saavedra²

¹LEPABE, Faculty of Engineering, Department of Chemical Engineering, University of Porto, Porto, Portugal.

|March 22, 2021

Summary

This summary is machine-generated.

Bacterial coaggregation, where distinct bacteria attach to each other, is crucial for forming aquatic multispecies communities like biofilms. Understanding this process, especially bridging bacteria, can enhance wastewater treatment and control unwanted biofilms.

Keywords:

Aquatic environments Biofilms Bridging organisms Cell-to-cell adhesion Interspecies coaggregation Multispecies biofilms

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Area of Science:

Microbiology
Environmental Science
Biotechnology

Background:

Sessile community establishment involves bacterial coaggregation, where distinct bacteria attach via specific molecules.
Coaggregation occurs in diverse aquatic environments, including freshwater, drinking water, wastewater, and marine water.
This mechanism plays a role in developing multispecies sessile communities and biofilms.

Purpose of the Study:

To comprehensively analyze the occurrence and role of bacterial coaggregation in various aquatic systems.
To explore the potential of bacterial coaggregation in water-related biotechnology.
To emphasize the significance of bridging bacteria in coaggregating consortia.

Main Methods:

Literature review and analysis of existing studies on bacterial coaggregation in aquatic environments.
Examination of the molecular mechanisms underlying coaggregation.
Assessment of the impact of coaggregation on biofilm formation, resilience, and homeostasis.

Main Results:

Bacterial coaggregation is a widespread phenomenon in diverse aquatic systems.
Coaggregation significantly influences the structure, resilience, and homeostasis of multispecies biofilms.
Bridging bacteria have been identified within coaggregating consortia, highlighting their importance.

Conclusions:

Bacterial coaggregation is a key process in the development and stability of aquatic microbial communities.
Understanding coaggregation, particularly the role of bridging bacteria, offers potential for improving wastewater treatment processes.
This mechanism can be leveraged to develop strategies for controlling problematic biofilms in various water-related applications.