Genome-Based Analyses of Six Hexacorallian Species Reject the "Naked Coral" Hypothesis

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2017
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Wang, Xin
Drillon, Guénola
Ryu, Taewoo
Aranda, Manuel
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Genome biology and evolution ; 9 (2017), 10. - S. 2626-2634. - Oxford University Press. - eISSN 1759-6653
Zusammenfassung
Scleractinian corals are the foundation species of the coral-reef ecosystem. Their calcium carbonate skeletons form extensive structures that are home to millions of species, making coral reefs one of the most diverse ecosystems of our planet. However, our understanding of how reef-building corals have evolved the ability to calcify and become the ecosystem builders they are today is hampered by uncertain relationships within their subclass Hexacorallia. Corallimorpharians have been proposed to originate from a complex scleractinian ancestor that lost the ability to calcify in response to increasing ocean acidification, suggesting the possibility for corals to lose and gain the ability to calcify in response to increasing ocean acidification. Here, we employed a phylogenomic approach using whole-genome data from six hexacorallian species to resolve the evolutionary relationship between reef-building corals and their noncalcifying relatives. Phylogenetic analysis based on 1,421 single-copy orthologs, as well as gene presence/absence and synteny information, converged on the same topologies, showing strong support for scleractinian monophyly and a corallimorpharian sister clade. Our broad phylogenomic approach using sequence-based and sequence-independent analyses provides unambiguous evidence for the monophyly of scleractinian corals and the rejection of corallimorpharians as descendants of a complex coral ancestor.
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570 Biowissenschaften, Biologie
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naked corals, Scleractinia, Corallimorpharia, phylogenomics, evolution, calcification
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ISO 690WANG, Xin, Guénola DRILLON, Taewoo RYU, Christian R. VOOLSTRA, Manuel ARANDA, 2017. Genome-Based Analyses of Six Hexacorallian Species Reject the "Naked Coral" Hypothesis. In: Genome biology and evolution. Oxford University Press. 9(10), pp. 2626-2634. eISSN 1759-6653. Available under: doi: 10.1093/gbe/evx196
BibTex
@article{Wang2017Genom-50960,
  year={2017},
  doi={10.1093/gbe/evx196},
  title={Genome-Based Analyses of Six Hexacorallian Species Reject the "Naked Coral" Hypothesis},
  number={10},
  volume={9},
  journal={Genome biology and evolution},
  pages={2626--2634},
  author={Wang, Xin and Drillon, Guénola and Ryu, Taewoo and Voolstra, Christian R. and Aranda, Manuel}
}
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    <dcterms:abstract xml:lang="eng">Scleractinian corals are the foundation species of the coral-reef ecosystem. Their calcium carbonate skeletons form extensive structures that are home to millions of species, making coral reefs one of the most diverse ecosystems of our planet. However, our understanding of how reef-building corals have evolved the ability to calcify and become the ecosystem builders they are today is hampered by uncertain relationships within their subclass Hexacorallia. Corallimorpharians have been proposed to originate from a complex scleractinian ancestor that lost the ability to calcify in response to increasing ocean acidification, suggesting the possibility for corals to lose and gain the ability to calcify in response to increasing ocean acidification. Here, we employed a phylogenomic approach using whole-genome data from six hexacorallian species to resolve the evolutionary relationship between reef-building corals and their noncalcifying relatives. Phylogenetic analysis based on 1,421 single-copy orthologs, as well as gene presence/absence and synteny information, converged on the same topologies, showing strong support for scleractinian monophyly and a corallimorpharian sister clade. Our broad phylogenomic approach using sequence-based and sequence-independent analyses provides unambiguous evidence for the monophyly of scleractinian corals and the rejection of corallimorpharians as descendants of a complex coral ancestor.</dcterms:abstract>
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