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Updated: Oct 23, 2025

Prospecting Microbial Strains for Bioremediation and Probiotics Development for Metaorganism Research and Preservation

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Published on: October 31, 2019

A role for bacterial experimental evolution in coral bleaching mitigation?

Justin Maire¹, Madeleine J H van Oppen²

¹School of Biosciences, The University of Melbourne, Melbourne, VIC, Australia.

Trends in Microbiology

|August 25, 2021

Summary

Experimental evolution of coral-associated bacteria can enhance coral thermal tolerance. This approach offers a promising strategy to improve coral reef resilience against climate change impacts like marine heatwaves.

Keywords:

assisted evolution bacteria conservation coral bleaching experimental evolution microbiome

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Area of Science:

Marine Biology
Microbial Ecology
Conservation Science

Background:

Coral reefs face significant threats from climate change, primarily driven by rising sea temperatures causing mass coral bleaching and mortality.
Marine heatwaves are becoming more frequent and severe, exacerbating coral reef decline.
Enhancing coral thermal tolerance is crucial for reef survival, with potential targets including the coral host and its associated microorganisms.

Purpose of the Study:

To present a workflow for experimentally evolving coral-associated bacteria to increase thermal tolerance.
To highlight the potential of microbial experimental evolution as a tool for coral reef conservation.
To demonstrate how to confer thermal tolerance to coral hosts via their associated bacteria.

Main Methods:

Utilizing experimental evolution techniques on coral-associated bacteria.
Developing a workflow to adapt bacteria to elevated temperatures.
Testing the transfer of enhanced thermal tolerance from evolved bacteria to coral hosts.

Main Results:

Experimental evolution is a viable method to enhance bacterial thermal tolerance.
Evolved bacteria can confer increased thermal tolerance to their coral hosts.
The proposed workflow provides a practical approach for microbial-based coral resilience.

Conclusions:

Experimental evolution of coral-associated bacteria is a promising strategy to boost coral resilience to thermal stress.
This approach can be integrated into coral reef conservation and restoration initiatives.
Targeting coral-associated microbes offers a novel avenue for mitigating climate change impacts on coral reefs.