Bacterial community dynamics are linked to patterns of coral heat tolerance

Maren Ziegler, Francois O. Seneca, Lauren Yum, Stephen R. Palumbi, Christian R. Voolstra

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387 Scopus citations

Abstract

Ocean warming threatens corals and the coral reef ecosystem. Nevertheless, corals can be adapted to their thermal environment and inherit heat tolerance across generations. In addition, the diverse microbes that associate with corals have the capacity for more rapid change, potentially aiding the adaptation of long-lived corals. Here, we show that the microbiome of reef corals is different across thermally variable habitats and changes over time when corals are reciprocally transplanted. Exposing these corals to thermal bleaching conditions changes the microbiome for heat-sensitive corals, but not for heat-tolerant corals growing in habitats with natural high heat extremes. Importantly, particular bacterial taxa predict the coral host response in a short-term heat stress experiment. Such associations could result from parallel responses of the coral and the microbial community to living at high natural temperatures. A competing hypothesis is that the microbial community and coral heat tolerance are causally linked.
Original languageEnglish (US)
JournalNature Communications
Volume8
Issue number1
DOIs
StatePublished - Feb 10 2017

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): FCC/1/1973-10-01, FCC/1/1973-18-01
Acknowledgements: We thank Craig Michell (KAUST) for sequence library preparation, Yi Jin Liew (KAUST) and Sebastian Steinke (KAUST) for assistance with OTU mapping to metagenome function, Shobhit Agrawal (KAUST) for support with statistical analysis, Ivan Gromicho (KAUST) for implementing the concepts for Fig. 1 and KAUST Bioscience Core Lab for sequencing. Research reported in this publication was supported by baseline research funds to C.R.V. and Red Sea Research Center funded projects FCC/1/1973-10-01 and FCC/1/1973-18-01 by KAUST.

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