A role for diatom-like silicon transporters in calcifying coccolithophores

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2016
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Taylor, Alison R.
Walker, Charlotte E.
Probert, Ian
de Vargas, Colomban
Audic, Stephane
Schroeder, Declan
Brownlee, Colin
Wheeler, Glen L.
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Nature Communications. 2016, 7, 10543. eISSN 2041-1723. Available under: doi: 10.1038/ncomms10543
Zusammenfassung

Biomineralization by marine phytoplankton, such as the silicifying diatoms and calcifying coccolithophores, plays an important role in carbon and nutrient cycling in the oceans. Silicification and calcification are distinct cellular processes with no known common mechanisms. It is thought that coccolithophores are able to outcompete diatoms in Si-depleted waters, which can contribute to the formation of coccolithophore blooms. Here we show that an expanded family of diatom-like silicon transporters (SITs) are present in both silicifying and calcifying haptophyte phytoplankton, including some globally important coccolithophores. Si is required for calcification in these coccolithophores, indicating that Si uptake contributes to the very different forms of biomineralization in diatoms and coccolithophores. Significantly, SITs and the requirement for Si are absent from highly abundant bloom-forming coccolithophores, such as Emiliania huxleyi. These very different requirements for Si in coccolithophores are likely to have major influence on their competitive interactions with diatoms and other siliceous phytoplankton.

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540 Chemie
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ISO 690DURAK, Grazyna Malgorzata, Alison R. TAYLOR, Charlotte E. WALKER, Ian PROBERT, Colomban DE VARGAS, Stephane AUDIC, Declan SCHROEDER, Colin BROWNLEE, Glen L. WHEELER, 2016. A role for diatom-like silicon transporters in calcifying coccolithophores. In: Nature Communications. 2016, 7, 10543. eISSN 2041-1723. Available under: doi: 10.1038/ncomms10543
BibTex
@article{Durak2016-02-04diato-40290,
  year={2016},
  doi={10.1038/ncomms10543},
  title={A role for diatom-like silicon transporters in calcifying coccolithophores},
  volume={7},
  journal={Nature Communications},
  author={Durak, Grazyna Malgorzata and Taylor, Alison R. and Walker, Charlotte E. and Probert, Ian and de Vargas, Colomban and Audic, Stephane and Schroeder, Declan and Brownlee, Colin and Wheeler, Glen L.},
  note={Article Number: 10543}
}
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