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Phenotypic Variability in the Coccolithophore Emiliania huxleyi

Publié dansPloS one, vol. 11, no. 6, e0157697
Date de publication2016
Résumé

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.

Citation (format ISO)
BLANCO AMEIJEIRAS, Sonia et al. Phenotypic Variability in the Coccolithophore Emiliania huxleyi. In: PloS one, 2016, vol. 11, n° 6, p. e0157697. doi: 10.1371/journal.pone.0157697
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Article (Published version)
Identifiants
ISSN du journal1932-6203
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Informations techniques

Création29/06/2016 23:35:00
Première validation29/06/2016 23:35:00
Heure de mise à jour15/03/2023 00:31:15
Changement de statut15/03/2023 00:31:15
Dernière indexation12/02/2024 11:25:15
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