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Symbiodinium genomes reveal adaptive evolution of functions related to symbiosis

Huanle Liu, Timothy G. Stephens, Raúl A. González-Pech, Victor H. Beltran, Bruno Lapeyre, Pim Bongaerts, Ira Cooke, David G. Bourne, Sylvain Forêt, David J. Miller, Madeleine J. H. van Oppen, View ORCID ProfileChristian R. Voolstra, View ORCID ProfileMark A. Ragan, View ORCID ProfileCheong Xin Chan
doi: https://doi.org/10.1101/198762
Huanle Liu
1Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
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Timothy G. Stephens
1Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
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Raúl A. González-Pech
1Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
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Victor H. Beltran
2Australian Institute of Marine Science, Townsville, QLD 4810, Australia
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Bruno Lapeyre
3ARC Centre of Excellence for Coral Reef Studies and Department of Molecular and Cell Biology, James Cook University, Townsville, QLD 4811, Australia
4Laboratoire d’excellence CORAIL, Centre de Recherches Insulaires et Observatoire de l’Environnement, Moorea 98729, French Polynesia
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Pim Bongaerts
5Global Change Institute, The University of Queensland, Brisbane, QLD 4072, Australia
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Ira Cooke
3ARC Centre of Excellence for Coral Reef Studies and Department of Molecular and Cell Biology, James Cook University, Townsville, QLD 4811, Australia
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David G. Bourne
2Australian Institute of Marine Science, Townsville, QLD 4810, Australia
6College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia
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Sylvain Forêt
7Research School of Biology, Australian National University, Canberra, ACT 2601, Australia
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David J. Miller
3ARC Centre of Excellence for Coral Reef Studies and Department of Molecular and Cell Biology, James Cook University, Townsville, QLD 4811, Australia
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Madeleine J. H. van Oppen
2Australian Institute of Marine Science, Townsville, QLD 4810, Australia
8School of BioSciences, The University of Melbourne, VIC 3010, Australia
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Christian R. Voolstra
9Red Sea Research Center, Division of Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
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  • ORCID record for Christian R. Voolstra
Mark A. Ragan
1Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
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Cheong Xin Chan
1Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
10School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane,QLD 4072, Australia
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  • ORCID record for Cheong Xin Chan
  • For correspondence: c.chan1@uq.edu.au
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Abstract

Symbiosis between dinoflagellates of the genus Symbiodinium and reef-building corals forms the trophic foundation of the world’s coral reef ecosystems. Here we present the first draft genome of Symbiodinium goreaui (Clade C, type C1: 1.03 Gbp), one of the most ubiquitous endosymbionts associated with corals, and an improved draft genome of Symbiodinium kawagutii (Clade F, strain CS-156: 1.05 Gbp), previously sequenced as strain CCMP2468, to further elucidate genomic signatures of this symbiosis. Comparative analysis of four available Symbiodinium genomes against other dinoflagellate genomes led to the identification of 2460 nuclear gene families that show evidence of positive selection, including genes involved in photosynthesis, transmembrane ion transport, synthesis and modification of amino acids and glycoproteins, and stress response. Further, we identified extensive sets of genes for meiosis and response to light stress. These draft genomes provide a foundational resource for advancing our understanding Symbiodinium biology and the coral-algal symbiosis.

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Posted October 05, 2017.
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Symbiodinium genomes reveal adaptive evolution of functions related to symbiosis
Huanle Liu, Timothy G. Stephens, Raúl A. González-Pech, Victor H. Beltran, Bruno Lapeyre, Pim Bongaerts, Ira Cooke, David G. Bourne, Sylvain Forêt, David J. Miller, Madeleine J. H. van Oppen, Christian R. Voolstra, Mark A. Ragan, Cheong Xin Chan
bioRxiv 198762; doi: https://doi.org/10.1101/198762
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Symbiodinium genomes reveal adaptive evolution of functions related to symbiosis
Huanle Liu, Timothy G. Stephens, Raúl A. González-Pech, Victor H. Beltran, Bruno Lapeyre, Pim Bongaerts, Ira Cooke, David G. Bourne, Sylvain Forêt, David J. Miller, Madeleine J. H. van Oppen, Christian R. Voolstra, Mark A. Ragan, Cheong Xin Chan
bioRxiv 198762; doi: https://doi.org/10.1101/198762

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