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Phenotypic variability in the coccolithophore Emiliania huxleyi

Phenotypic variability in the coccolithophore Emiliania huxleyi
Phenotypic variability in the coccolithophore Emiliania huxleyi
Coccolithophores are a vital part of oceanic phytoplankton assemblages that produce organic matter and calcium carbonate (CaCO3) containing traces of other elements (i.e. Sr and Mg). Their associated carbon export from the euphotic zone to the oceans' interior plays a crucial role in CO2 feedback mechanisms and biogeochemical cycles. The coccolithophore Emiliania huxleyi has been widely studied as a model organism to understand physiological, biogeochemical, and ecological processes in marine sciences. Here, we show the inter-strain variability in physiological and biogeochemical traits in 13 strains of E. huxleyi from various biogeographical provinces obtained from culture collections commonly used in the literature. Our results demonstrate that inter-strain genetic variability has greater potential to induce larger phenotypic differences than the phenotypic plasticity of single strains cultured under a broad range of variable environmental conditions. The range of variation found in physiological parameters and calcite Sr:Ca highlights the need to reconsider phenotypic variability in paleoproxy calibrations and model parameterizations to adequately translate findings from single strain laboratory experiments to the real ocean.
1932-6203
e0157697
Blanco-Ameijeiras, Sonia
d6a71690-783f-4674-8b6c-1d3d20dc4497
Lebrato, Mario
0c14d20e-c641-4a61-8ba2-b6377cdf1777
Stoll, Heather M.
fcb9ed2d-744d-4815-b1ea-e67029e8538c
Iglesias-Rodriguez, Debora
34da3d8b-ca9d-4db8-91f0-abfed4a5710f
Müller, Marius N.
afad49ff-dc53-44ad-b10f-84b30bffe3b6
Méndez-Vicente, Ana
7d8a3fdd-2e5f-4d0a-abbf-3ad22232d8a0
Oschlies, Andreas
75e18f55-3134-44a2-82ba-71334397727f
Blanco-Ameijeiras, Sonia
d6a71690-783f-4674-8b6c-1d3d20dc4497
Lebrato, Mario
0c14d20e-c641-4a61-8ba2-b6377cdf1777
Stoll, Heather M.
fcb9ed2d-744d-4815-b1ea-e67029e8538c
Iglesias-Rodriguez, Debora
34da3d8b-ca9d-4db8-91f0-abfed4a5710f
Müller, Marius N.
afad49ff-dc53-44ad-b10f-84b30bffe3b6
Méndez-Vicente, Ana
7d8a3fdd-2e5f-4d0a-abbf-3ad22232d8a0
Oschlies, Andreas
75e18f55-3134-44a2-82ba-71334397727f

Blanco-Ameijeiras, Sonia, Lebrato, Mario, Stoll, Heather M., Iglesias-Rodriguez, Debora, Müller, Marius N., Méndez-Vicente, Ana and Oschlies, Andreas (2016) Phenotypic variability in the coccolithophore Emiliania huxleyi. PLoS ONE, 11 (6), e0157697. (doi:10.1371/journal.pone.0157697).

Record type: Article

Abstract

Coccolithophores are a vital part of oceanic phytoplankton assemblages that produce organic matter and calcium carbonate (CaCO3) containing traces of other elements (i.e. Sr and Mg). Their associated carbon export from the euphotic zone to the oceans' interior plays a crucial role in CO2 feedback mechanisms and biogeochemical cycles. The coccolithophore Emiliania huxleyi has been widely studied as a model organism to understand physiological, biogeochemical, and ecological processes in marine sciences. Here, we show the inter-strain variability in physiological and biogeochemical traits in 13 strains of E. huxleyi from various biogeographical provinces obtained from culture collections commonly used in the literature. Our results demonstrate that inter-strain genetic variability has greater potential to induce larger phenotypic differences than the phenotypic plasticity of single strains cultured under a broad range of variable environmental conditions. The range of variation found in physiological parameters and calcite Sr:Ca highlights the need to reconsider phenotypic variability in paleoproxy calibrations and model parameterizations to adequately translate findings from single strain laboratory experiments to the real ocean.

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e-pub ahead of print date: 27 June 2016
Organisations: Ocean and Earth Science

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Local EPrints ID: 397719
URI: http://eprints.soton.ac.uk/id/eprint/397719
ISSN: 1932-6203
PURE UUID: 853f96a0-36e2-49e7-b7d5-30dd010514eb

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Date deposited: 04 Jul 2016 09:29
Last modified: 16 Dec 2019 19:50

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Contributors

Author: Sonia Blanco-Ameijeiras
Author: Mario Lebrato
Author: Heather M. Stoll
Author: Debora Iglesias-Rodriguez
Author: Marius N. Müller
Author: Ana Méndez-Vicente
Author: Andreas Oschlies

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