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Phytoplankton calcification as an effective mechanism to alleviate cellular calcium poisoning

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Phytoplankton calcification as an effective mechanism to alleviate cellular calcium poisoning. / Müller, M. N.; Barcelos E Ramos, J.; Schulz, K. G.; Riebesell, U.; Kaźmierczak, J.; Gallo, F.; Mackinder, L.; Li, Y.; Nesterenko, P. N.; Trull, T. W.; Hallegraeff, G. M.

In: Biogeosciences, Vol. 12, No. 21, 13.11.2015, p. 6493-6501.

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Müller, MN, Barcelos E Ramos, J, Schulz, KG, Riebesell, U, Kaźmierczak, J, Gallo, F, Mackinder, L, Li, Y, Nesterenko, PN, Trull, TW & Hallegraeff, GM 2015, 'Phytoplankton calcification as an effective mechanism to alleviate cellular calcium poisoning', Biogeosciences, vol. 12, no. 21, pp. 6493-6501. https://doi.org/10.5194/bg-12-6493-2015

APA

Müller, M. N., Barcelos E Ramos, J., Schulz, K. G., Riebesell, U., Kaźmierczak, J., Gallo, F., ... Hallegraeff, G. M. (2015). Phytoplankton calcification as an effective mechanism to alleviate cellular calcium poisoning. Biogeosciences, 12(21), 6493-6501. https://doi.org/10.5194/bg-12-6493-2015

Vancouver

Müller MN, Barcelos E Ramos J, Schulz KG, Riebesell U, Kaźmierczak J, Gallo F et al. Phytoplankton calcification as an effective mechanism to alleviate cellular calcium poisoning. Biogeosciences. 2015 Nov 13;12(21):6493-6501. https://doi.org/10.5194/bg-12-6493-2015

Author

Müller, M. N. ; Barcelos E Ramos, J. ; Schulz, K. G. ; Riebesell, U. ; Kaźmierczak, J. ; Gallo, F. ; Mackinder, L. ; Li, Y. ; Nesterenko, P. N. ; Trull, T. W. ; Hallegraeff, G. M. / Phytoplankton calcification as an effective mechanism to alleviate cellular calcium poisoning. In: Biogeosciences. 2015 ; Vol. 12, No. 21. pp. 6493-6501.

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@article{cb3b81d085774af7bee792b07a3c691b,
title = "Phytoplankton calcification as an effective mechanism to alleviate cellular calcium poisoning",
abstract = "Marine phytoplankton have developed the remarkable ability to tightly regulate the concentration of free calcium ions in the intracellular cytosol at a level of ∼ 0.1 μmol L-1 in the presence of seawater Ca2+ concentrations of 10 mmol L-1. The low cytosolic calcium ion concentration is of utmost importance for proper cell signalling function. While the regulatory mechanisms responsible for the tight control of intracellular Ca2+ concentration are not completely understood, phytoplankton taxonomic groups appear to have evolved different strategies, which may affect their ability to cope with changes in seawater Ca2+ concentrations in their environment on geological timescales. For example, the Cretaceous (145 to 66 Ma), an era known for the high abundance of coccolithophores and the production of enormous calcium carbonate deposits, exhibited seawater calcium concentrations up to 4 times present-day levels. We show that calcifying coccolithophore species (Emiliania huxleyi, Gephyrocapsa oceanica and Coccolithus braarudii) are able to maintain their relative fitness (in terms of growth rate and photosynthesis) at simulated Cretaceous seawater calcium concentrations, whereas these rates are severely reduced under these conditions in some non-calcareous phytoplankton species (Chaetoceros sp., Ceratoneis closterium and Heterosigma akashiwo). Most notably, this also applies to a non-calcifying strain of E. huxleyi which displays a calcium sensitivity similar to the non-calcareous species. We hypothesize that the process of calcification in coccolithophores provides an efficient mechanism to alleviate cellular calcium poisoning and thereby offered a potential key evolutionary advantage, responsible for the proliferation of coccolithophores during times of high seawater calcium concentrations. The exact function of calcification and the reason behind the highly ornate physical structures of coccoliths remain elusive.",
author = "M{\"u}ller, {M. N.} and {Barcelos E Ramos}, J. and Schulz, {K. G.} and U. Riebesell and J. Kaźmierczak and F. Gallo and L. Mackinder and Y. Li and Nesterenko, {P. N.} and Trull, {T. W.} and Hallegraeff, {G. M.}",
year = "2015",
month = "11",
day = "13",
doi = "10.5194/bg-12-6493-2015",
language = "English",
volume = "12",
pages = "6493--6501",
journal = "Biogeosciences",
issn = "1726-4170",
publisher = "European Geosciences Union",
number = "21",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Phytoplankton calcification as an effective mechanism to alleviate cellular calcium poisoning

AU - Müller, M. N.

AU - Barcelos E Ramos, J.

AU - Schulz, K. G.

AU - Riebesell, U.

AU - Kaźmierczak, J.

AU - Gallo, F.

AU - Mackinder, L.

AU - Li, Y.

AU - Nesterenko, P. N.

AU - Trull, T. W.

AU - Hallegraeff, G. M.

PY - 2015/11/13

Y1 - 2015/11/13

N2 - Marine phytoplankton have developed the remarkable ability to tightly regulate the concentration of free calcium ions in the intracellular cytosol at a level of ∼ 0.1 μmol L-1 in the presence of seawater Ca2+ concentrations of 10 mmol L-1. The low cytosolic calcium ion concentration is of utmost importance for proper cell signalling function. While the regulatory mechanisms responsible for the tight control of intracellular Ca2+ concentration are not completely understood, phytoplankton taxonomic groups appear to have evolved different strategies, which may affect their ability to cope with changes in seawater Ca2+ concentrations in their environment on geological timescales. For example, the Cretaceous (145 to 66 Ma), an era known for the high abundance of coccolithophores and the production of enormous calcium carbonate deposits, exhibited seawater calcium concentrations up to 4 times present-day levels. We show that calcifying coccolithophore species (Emiliania huxleyi, Gephyrocapsa oceanica and Coccolithus braarudii) are able to maintain their relative fitness (in terms of growth rate and photosynthesis) at simulated Cretaceous seawater calcium concentrations, whereas these rates are severely reduced under these conditions in some non-calcareous phytoplankton species (Chaetoceros sp., Ceratoneis closterium and Heterosigma akashiwo). Most notably, this also applies to a non-calcifying strain of E. huxleyi which displays a calcium sensitivity similar to the non-calcareous species. We hypothesize that the process of calcification in coccolithophores provides an efficient mechanism to alleviate cellular calcium poisoning and thereby offered a potential key evolutionary advantage, responsible for the proliferation of coccolithophores during times of high seawater calcium concentrations. The exact function of calcification and the reason behind the highly ornate physical structures of coccoliths remain elusive.

AB - Marine phytoplankton have developed the remarkable ability to tightly regulate the concentration of free calcium ions in the intracellular cytosol at a level of ∼ 0.1 μmol L-1 in the presence of seawater Ca2+ concentrations of 10 mmol L-1. The low cytosolic calcium ion concentration is of utmost importance for proper cell signalling function. While the regulatory mechanisms responsible for the tight control of intracellular Ca2+ concentration are not completely understood, phytoplankton taxonomic groups appear to have evolved different strategies, which may affect their ability to cope with changes in seawater Ca2+ concentrations in their environment on geological timescales. For example, the Cretaceous (145 to 66 Ma), an era known for the high abundance of coccolithophores and the production of enormous calcium carbonate deposits, exhibited seawater calcium concentrations up to 4 times present-day levels. We show that calcifying coccolithophore species (Emiliania huxleyi, Gephyrocapsa oceanica and Coccolithus braarudii) are able to maintain their relative fitness (in terms of growth rate and photosynthesis) at simulated Cretaceous seawater calcium concentrations, whereas these rates are severely reduced under these conditions in some non-calcareous phytoplankton species (Chaetoceros sp., Ceratoneis closterium and Heterosigma akashiwo). Most notably, this also applies to a non-calcifying strain of E. huxleyi which displays a calcium sensitivity similar to the non-calcareous species. We hypothesize that the process of calcification in coccolithophores provides an efficient mechanism to alleviate cellular calcium poisoning and thereby offered a potential key evolutionary advantage, responsible for the proliferation of coccolithophores during times of high seawater calcium concentrations. The exact function of calcification and the reason behind the highly ornate physical structures of coccoliths remain elusive.

UR - http://www.scopus.com/inward/record.url?scp=84947080943&partnerID=8YFLogxK

U2 - 10.5194/bg-12-6493-2015

DO - 10.5194/bg-12-6493-2015

M3 - Article

VL - 12

SP - 6493

EP - 6501

JO - Biogeosciences

T2 - Biogeosciences

JF - Biogeosciences

SN - 1726-4170

IS - 21

ER -