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Title: Future climate change is predicted to affect the microbiome and condition of habitat-forming kelp
Authors: Steinberg, Peter David
Qiu, Zhiguang
Coleman, Melinda A.
Provost, Euan
Dalton, Steven J.
Thomas, Torsten
Campbell, Alexandra H.
Kelaher, Brendan P.
Marzinelli, Ezequiel Miguel
Keywords: Bacteria
Science::Biological sciences
Issue Date: 2019
Source: Qiu, Z., Coleman, M. A., Provost, E., Campbell, A. H., Kelaher, B. P., Dalton, S. J., . . . Marzinelli, E. M. (2019). Future climate change is predicted to affect the microbiome and condition of habitat-forming kelp. Proceedings of the Royal Society B : Biological Sciences, 286(1896), 20181887-. doi:10.1098/rspb.2018.1887
Series/Report no.: Proceedings of the Royal Society B : Biological Sciences
Abstract: Climate change is driving global declines of marine habitat-forming species through physiological effects and through changes to ecological interactions, with projected trajectories for ocean warming and acidification likely to exacerbate such impacts in coming decades. Interactions between habitat-formers and their microbiomes are fundamental for host functioning and resilience, but how such relationships will change in future conditions is largely unknown. We investigated independent and interactive effects of warming and acidification on a large brown seaweed, the kelp Ecklonia radiata, and its associated microbiome in experimental mesocosms. Microbial communities were affected by warming and, during the first week, by acidification. During the second week, kelp developed disease-like symptoms previously observed in the field. The tissue of some kelp blistered, bleached and eventually degraded, particularly under the acidification treatments, affecting photosynthetic efficiency. Microbial communities differed between blistered and healthy kelp for all treatments, except for those under future conditions of warming and acidification, which after two weeks resembled assemblages associated with healthy hosts. This indicates that changes in the microbiome were not easily predictable as the severity of future climate scenarios increased. Future ocean conditions can change kelp microbiomes and may lead to host disease, with potentially cascading impacts on associated ecosystems.
ISSN: 0962-8452
DOI: 10.1098/rspb.2018.1887
Research Centres: Singapore Centre for Environmental Life Sciences and Engineering 
Rights: © 2019 The Author(s). Published by the Royal Society under the terms of the Creative Commons Attribution License, which permits unrestricted use, provided the original author and source are credited.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCELSE Journal Articles

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