Response of the Calcifying Coccolithophore to Low PH/high PCO: from Physiology to Molecular Level

Overview

Journal Mar Biol

Specialty Biology

Date 2014 Jan 7

PMID 24391258

Citations 18

Authors

Sophie Richier

Sarah Fiorini

Marie-Emmanuelle Kerros

Peter von Dassow

Jean-Pierre Gattuso

Affiliations

Soon will be listed here.

Abstract

The emergence of ocean acidification as a significant threat to calcifying organisms in marine ecosystems creates a pressing need to understand the physiological and molecular mechanisms by which calcification is affected by environmental parameters. We report here, for the first time, changes in gene expression induced by variations in pH/pCO in the widespread and abundant coccolithophore . Batch cultures were subjected to increased partial pressure of CO (pCO; i.e. decreased pH), and the changes in expression of four functional gene classes directly or indirectly related to calcification were investigated. Increased pCO did not affect the calcification rate and only carbonic anhydrase transcripts exhibited a significant down-regulation. Our observation that elevated pCO induces only limited changes in the transcription of several transporters of calcium and bicarbonate gives new significant elements to understand cellular mechanisms underlying the early response of to CO-driven ocean acidification.

Citing Articles

Measuring Protons with Photons: A Hand-Held, Spectrophotometric pH Analyzer for Ocean Acidification Research, Community Science and Education.

Pardis W, Grabb K, DeGrandpre M, Spaulding R, Beck J, Pfeifer J Sensors (Basel). 2022; 22(20).

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Association of Phosphatidylinositol-Specific Phospholipase C with Calcium-Induced Biomineralization in the Coccolithophore .

Nam O, Suzuki I, Shiraiwa Y, Jin E Microorganisms. 2020; 8(9).

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Coccolith mass and morphology of different Emiliania huxleyi morphotypes: A critical examination using Canary Islands material.

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De novo transcriptome profile of coccolithophorid alga Emiliania huxleyi CCMP371 at different calcium concentrations with proteome analysis.

Nam O, Park J, Lee H, Jin E PLoS One. 2019; 14(8):e0221938.

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Ocean acidification has little effect on the biochemical composition of the coccolithophore Emiliania huxleyi.

Heidenreich E, Wordenweber R, Kirschhofer F, Nusser M, Friedrich F, Fahl K PLoS One. 2019; 14(7):e0218564.

PMID: 31291290 PMC: 6619986. DOI: 10.1371/journal.pone.0218564.

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