Genomic signatures in the coral holobiont reveal host adaptations driven by Holocene climate change and reef specific symbionts
Ira Cooke, Hua Ying, Sylvain Foret, Pim Bongaerts, Jan M Strugnell, Oleg Simakov, Jia Zhang, Matt A Field, Mauricio Rodriguez-Lanetty, Sara C Bell, David G Bourne, Madeleine JH van Oppen, Mark A Ragan, David J Miller
Science Advances | AMER ASSOC ADVANCEMENT SCIENCE | Published : 2020
Genetic signatures caused by demographic and adaptive processes during past climatic shifts can inform predictions of species' responses to anthropogenic climate change. To identify these signatures in Acropora tenuis, a reef-building coral threatened by global warming, we first assembled the genome from long reads and then used shallow whole-genome resequencing of 150 colonies from the central inshore Great Barrier Reef to inform population genomic analyses. We identify population structure in the host that reflects a Pleistocene split, whereas photosymbiont differences between reefs most likely reflect contemporary (Holocene) conditions. Signatures of selection in the host were associated ..View full abstract
This project was supported by a Queensland Government DSITIA Accelerate Partnerships award to the University of Queensland on behalf of the Australian Institute of Marine Science (AIMS), the Australian National University, Bioplatforms Australia, the Great Barrier Reef Foundation, the Great Barrier Reef Marine Park Authority, and James Cook University (2014). This research/project was undertaken with the assistance of resources and services from the National Computational Infrastructure (NCI), which is supported by the Australian Government. The data used in this project were funded by the Great Barrier Reef Foundation's Resilient Coral Reefs Successfully Adapting to Climate Change research and development program in collaboration with the Australian Government, Bioplatforms Australia through the National Collaborative Research Infrastructure Strategy (NCRIS), Rio Tinto, and a family foundation. Genome sequencing was supported by the Reef Future Genomics (ReFuGe) 2020 Consortium organized by the Great Barrier Reef Foundation.