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Bibliographic Details
Main Authors: Bach, Lennart Thomas, Mackinder, Luke C M
Format: Dataset Open Access
Language:en
Published: PANGAEA 2013
Subjects:
Alkalinity, total; alpha carbonic anhydrase 1; alpha carbonic anhydrase 1, standard error; alpha carbonic anhydrase 2; alpha carbonic anhydrase 2, standard error; Anion exchanger like 1; Anion exchanger like 1, standard error; Aquaporin 2; Aquaporin 2, standard error; Aragonite saturation state; beta carbonic anhydrase; beta carbonic anhydrase, standard error; Bicarbonate ion; BIOACID; Biological Impacts of Ocean Acidification; Ca2+/H+ exchanger 3; Ca2+/H+ exchanger 3, standard error; Calcification/Dissolution; Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, particulate, production per cell; Carbon, organic, particulate, production per cell; Carbon/Nitrogen ratio; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Chlorophyll a; Chromista; Containers and aquaria (20-1000 L or < 1 m**2); delta carbonic anhydrase; delta carbonic anhydrase, standard error; Difference; Emiliania huxleyi; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); gamma carbonic anhydrase, mean; gamma carbonic anhydrase, standard error; Glutamic acid, proline, alanine rich protein; Glutamic acid, proline, alanine rich protein, standard error; Growth/Morphology; Growth rate; Haptophyta; Irradiance; Laboratory experiment; Laboratory strains; Light:Dark cycle; Low CO2 induced gene; Low CO2 induced gene, standard error; Na+/H+ exchanger 2; Na+/H+ exchanger 2, standard error; Not applicable; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Particulate inorganic carbon/particulate organic carbon ratio; Pelagos; pH, free scale; pH, total scale; Phytoplankton; Plasma membran type H+ pump; Plasma membran type H+ pump, standard error; Primary production/Photosynthesis; RubisCO; RubisCO, standard error; Salinity; Single species; Species; Temperature, water; Treatment; Vacuolar-type H+ pump; Vacuolar-type H+ pump, standard error; Voltage-gated H+ channel; Voltage-gated H+ channel, standard error
Online Access:https://doi.org/10.1594/PANGAEA.830627
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Table of Contents:
  • Coccolithophores are important calcifying phytoplankton predicted to be impacted by changes in ocean carbonate chemistry caused by the absorption of anthropogenic CO2. However, it is difficult to disentangle the effects of the simultaneously changing carbonate system parameters (CO2, bicarbonate, carbonate and protons) on the physiological responses to elevated CO2. Here, we adopted a multifactorial approach at constant pH or CO2 whilst varying dissolved inorganic carbon (DIC) to determine physiological and transcriptional responses to individual carbonate system parameters. We show that Emiliania huxleyi is sensitive to low CO2 (growth and photosynthesis) and low bicarbonate (calcification) as well as low pH beyond a limited tolerance range, but is much less sensitive to elevated CO2 and bicarbonate. Multiple up-regulated genes at low DIC bear the hallmarks of a carbon-concentrating mechanism (CCM) that is responsive to CO2 and bicarbonate but not to pH. Emiliania huxleyi appears to have evolved mechanisms to respond to limiting rather than elevated CO2. Calcification does not function as a CCM, but is inhibited at low DIC to allow the redistribution of DIC from calcification to photosynthesis. The presented data provides a significant step in understanding how E. huxleyi will respond to changing carbonate chemistry at a cellular level

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