Bicarbonate transporters in corals point towards a key step in the evolution of cnidarian calcification

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2015
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Zoccola, Didier
Ganot, Philippe
Bertucci, Anthony
Caminiti-Segonds, Natacha
Techer, Nathalie
Aranda, Manuel
Tambutté, Eric
Allemand, Denis
Casey, Joseph R.
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Scientific reports. Springer Nature. 2015, 5, 09983. eISSN 2045-2322. Available under: doi: 10.1038/srep09983
Zusammenfassung

The bicarbonate ion (HCO3(-)) is involved in two major physiological processes in corals, biomineralization and photosynthesis, yet no molecular data on bicarbonate transporters are available. Here, we characterized plasma membrane-type HCO3(-) transporters in the scleractinian coral Stylophora pistillata. Eight solute carrier (SLC) genes were found in the genome: five homologs of mammalian-type SLC4 family members, and three of mammalian-type SLC26 family members. Using relative expression analysis and immunostaining, we analyzed the cellular distribution of these transporters and conducted phylogenetic analyses to determine the extent of conservation among cnidarian model organisms. Our data suggest that the SLC4γ isoform is specific to scleractinian corals and responsible for supplying HCO3(-) to the site of calcification. Taken together, SLC4γ appears to be one of the key genes for skeleton building in corals, which bears profound implications for our understanding of coral biomineralization and the evolution of scleractinian corals within cnidarians.

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ISO 690ZOCCOLA, Didier, Philippe GANOT, Anthony BERTUCCI, Natacha CAMINITI-SEGONDS, Nathalie TECHER, Christian R. VOOLSTRA, Manuel ARANDA, Eric TAMBUTTÉ, Denis ALLEMAND, Joseph R. CASEY, 2015. Bicarbonate transporters in corals point towards a key step in the evolution of cnidarian calcification. In: Scientific reports. Springer Nature. 2015, 5, 09983. eISSN 2045-2322. Available under: doi: 10.1038/srep09983
BibTex
@article{Zoccola2015-06-04Bicar-50769,
  year={2015},
  doi={10.1038/srep09983},
  title={Bicarbonate transporters in corals point towards a key step in the evolution of cnidarian calcification},
  volume={5},
  journal={Scientific reports},
  author={Zoccola, Didier and Ganot, Philippe and Bertucci, Anthony and Caminiti-Segonds, Natacha and Techer, Nathalie and Voolstra, Christian R. and Aranda, Manuel and Tambutté, Eric and Allemand, Denis and Casey, Joseph R.},
  note={Article Number: 09983}
}
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