Signatures of selection underpinning rapid coral adaptation to the world’s warmest reefs
AuthorsSmith, E. G.
Hazzouri, Khaled M.
Choi, Jae Young
Howells, Emily J.
Burt, John A.
KAUST DepartmentMarine Science Program
Red Sea Research Center (RSRC)
Biological and Environmental Science and Engineering (BESE) Division
Permanent link to this recordhttp://hdl.handle.net/10754/674971
MetadataShow full item record
AbstractCoral populations in the world’s warmest reefs, the Persian/Arabian Gulf (PAG), represent an ideal model system to understand the evolutionary response of coral populations to past and present environmental change and to identify genomic loci that contribute to elevated thermal tolerance. Here, we use population genomics of the brain coral Platygyra daedalea to show that corals in the PAG represent a distinct subpopulation that was established during the Holocene marine transgression, and identify selective sweeps in their genomes associated with thermal adaptation. We demonstrate the presence of positive and disruptive selection and provide evidence for selection of differentially methylated haplotypes. While demographic analyses suggest limited potential for genetic rescue of neighboring Indian Ocean reefs, the presence of putative targets of selection in corals outside of the PAG offers hope that loci associated with thermal tolerance may be present in the standing genetic variation.
CitationSmith, E. G., Hazzouri, K. M., Choi, J. Y., Delaney, P., Al-Kharafi, M., Howells, E. J., … Burt, J. A. (2022). Signatures of selection underpinning rapid coral adaptation to the world’s warmest reefs. Science Advances, 8(2). doi:10.1126/sciadv.abl7287
SponsorsThis project was funded by a New York University Abu Dhabi Research Enhancement Fund award and grant CG007 to J.A.B. from Tamkeen for the NYUAD Water Research Center.
Except where otherwise noted, this item's license is described as This is an open-access article distributed under the terms of the Creative Commons Attribution license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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