Journal article

Host Coenzyme Q Redox State Is an Early Biomarker of Thermal Stress in the Coral Acropora millepora

Adrian Lutz, Jean-Baptiste Raina, Cherie A Motti, David J Miller, Madeleine JH van Oppen



Bleaching episodes caused by increasing seawater temperatures may induce mass coral mortality and are regarded as one of the biggest threats to coral reef ecosystems worldwide. The current consensus is that this phenomenon results from enhanced production of harmful reactive oxygen species (ROS) that disrupt the symbiosis between corals and their endosymbiotic dinoflagellates, Symbiodinium. Here, the responses of two important antioxidant defence components, the host coenzyme Q (CoQ) and symbiont plastoquinone (PQ) pools, are investigated for the first time in colonies of the scleractinian coral, Acropora millepora, during experimentally-induced bleaching under ecologically relevant conditio..

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Funding Acknowledgements

This work has been funded by the Australian Institute of Marine Science ( and AIMS@JCU (, a collaborative scheme between the Australian Institute for Marine Science and James Cook University. A.L. and J-B. R. were supported by AIMS@JCU PhD Scholarships. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.