Environmental carbonate chemistry selects for phenotype of recently isolated strains of Emiliania huxleyi
Coccolithophorid algae, particularly Emiliania huxleyi, are prolific biomineralisers that, under many conditions, dominate communities of marine eukaryotic plankton. Their ability to photosynthesise and form calcified scales (coccoliths) has placed them in a unique position in the global carbon cycl...
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ftunivreading:oai:centaur.reading.ac.uk:71133 2024-05-19T07:36:38+00:00 Environmental carbonate chemistry selects for phenotype of recently isolated strains of Emiliania huxleyi Rickaby, Rosalind E. M. Hermoso, Michael Lee, Renee, B. Y. Rae, Benjamin D. Heureux, Ana M. C. Balestreri, Cecilia Chakravati, Leela Schroeder, Declan C. Brownlee, Colin 2016-05 https://centaur.reading.ac.uk/71133/ unknown Elsevier Rickaby, R. E. M., Hermoso, M., Lee, R., B. <https://centaur.reading.ac.uk/view/creators/90007016.html>, Rae, B. D., Heureux, A. M. C., Balestreri, C., Chakravati, L., Schroeder, D. C. and Brownlee, C. (2016) Environmental carbonate chemistry selects for phenotype of recently isolated strains of Emiliania huxleyi. Deep Sea Research Part II: Topical Studies in Oceanography, 127. pp. 28-40. ISSN 0967-0645 doi: https://doi.org/10.1016/j.dsr2.2016.02.010 <https://doi.org/10.1016/j.dsr2.2016.02.010> Article PeerReviewed 2016 ftunivreading https://doi.org/10.1016/j.dsr2.2016.02.010 2024-05-01T00:09:48Z Coccolithophorid algae, particularly Emiliania huxleyi, are prolific biomineralisers that, under many conditions, dominate communities of marine eukaryotic plankton. Their ability to photosynthesise and form calcified scales (coccoliths) has placed them in a unique position in the global carbon cycle. Contrasting reports have been made with regards to the response of E. huxleyi to ocean acidification. Therefore, there is a pressing need to further determine the fate of this key organism in a rising CO2 world. In this paper, we investigate the phenotype of newly isolated, genetically diverse, strains of E. huxleyi from UK Ocean Acidification Research Programme (UKOA) cruises around the British Isles, the Arctic, and the Southern Ocean. We find a continuum of diversity amongst the physiological and photosynthetic parameters of different strains of E. huxleyi morphotype A under uniform, ambient conditions imposed in the laboratory. This physiology is best explained by adaptation to carbonate chemistry in the former habitat rather than being prescribed by genetic fingerprints such as the coccolithophore morphology motif (CMM). To a first order, the photosynthetic capacity of each strain is a function of both aqueous CO2 availability, and calcification rate, suggestive of a link between carbon concentrating ability and calcification. The calcification rate of each strain is related linearly to the natural environmental [CO32−] at the site of isolation, but a few exceptional strains display low calcification rates at the highest [CO32−] when calcification is limited by low CO2 availability and/or a lack of a carbon concentrating mechanism. We present O2-electrode measurements alongside coccolith oxygen isotopic composition and the uronic acid content (UAC) of the coccolith associated polysaccharide (CAP), that act as indirect tools to show the differing carbon concentrating ability of the strains. The environmental selection revealed amongst our recently isolated strain collection points to the future outcompetition ... Article in Journal/Newspaper Arctic Ocean acidification Southern Ocean CentAUR: Central Archive at the University of Reading Deep Sea Research Part II: Topical Studies in Oceanography 127 28 40 |
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Open Polar |
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CentAUR: Central Archive at the University of Reading |
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ftunivreading |
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description |
Coccolithophorid algae, particularly Emiliania huxleyi, are prolific biomineralisers that, under many conditions, dominate communities of marine eukaryotic plankton. Their ability to photosynthesise and form calcified scales (coccoliths) has placed them in a unique position in the global carbon cycle. Contrasting reports have been made with regards to the response of E. huxleyi to ocean acidification. Therefore, there is a pressing need to further determine the fate of this key organism in a rising CO2 world. In this paper, we investigate the phenotype of newly isolated, genetically diverse, strains of E. huxleyi from UK Ocean Acidification Research Programme (UKOA) cruises around the British Isles, the Arctic, and the Southern Ocean. We find a continuum of diversity amongst the physiological and photosynthetic parameters of different strains of E. huxleyi morphotype A under uniform, ambient conditions imposed in the laboratory. This physiology is best explained by adaptation to carbonate chemistry in the former habitat rather than being prescribed by genetic fingerprints such as the coccolithophore morphology motif (CMM). To a first order, the photosynthetic capacity of each strain is a function of both aqueous CO2 availability, and calcification rate, suggestive of a link between carbon concentrating ability and calcification. The calcification rate of each strain is related linearly to the natural environmental [CO32−] at the site of isolation, but a few exceptional strains display low calcification rates at the highest [CO32−] when calcification is limited by low CO2 availability and/or a lack of a carbon concentrating mechanism. We present O2-electrode measurements alongside coccolith oxygen isotopic composition and the uronic acid content (UAC) of the coccolith associated polysaccharide (CAP), that act as indirect tools to show the differing carbon concentrating ability of the strains. The environmental selection revealed amongst our recently isolated strain collection points to the future outcompetition ... |
format |
Article in Journal/Newspaper |
author |
Rickaby, Rosalind E. M. Hermoso, Michael Lee, Renee, B. Y. Rae, Benjamin D. Heureux, Ana M. C. Balestreri, Cecilia Chakravati, Leela Schroeder, Declan C. Brownlee, Colin |
spellingShingle |
Rickaby, Rosalind E. M. Hermoso, Michael Lee, Renee, B. Y. Rae, Benjamin D. Heureux, Ana M. C. Balestreri, Cecilia Chakravati, Leela Schroeder, Declan C. Brownlee, Colin Environmental carbonate chemistry selects for phenotype of recently isolated strains of Emiliania huxleyi |
author_facet |
Rickaby, Rosalind E. M. Hermoso, Michael Lee, Renee, B. Y. Rae, Benjamin D. Heureux, Ana M. C. Balestreri, Cecilia Chakravati, Leela Schroeder, Declan C. Brownlee, Colin |
author_sort |
Rickaby, Rosalind E. M. |
title |
Environmental carbonate chemistry selects for phenotype of recently isolated strains of Emiliania huxleyi |
title_short |
Environmental carbonate chemistry selects for phenotype of recently isolated strains of Emiliania huxleyi |
title_full |
Environmental carbonate chemistry selects for phenotype of recently isolated strains of Emiliania huxleyi |
title_fullStr |
Environmental carbonate chemistry selects for phenotype of recently isolated strains of Emiliania huxleyi |
title_full_unstemmed |
Environmental carbonate chemistry selects for phenotype of recently isolated strains of Emiliania huxleyi |
title_sort |
environmental carbonate chemistry selects for phenotype of recently isolated strains of emiliania huxleyi |
publisher |
Elsevier |
publishDate |
2016 |
url |
https://centaur.reading.ac.uk/71133/ |
genre |
Arctic Ocean acidification Southern Ocean |
genre_facet |
Arctic Ocean acidification Southern Ocean |
op_relation |
Rickaby, R. E. M., Hermoso, M., Lee, R., B. <https://centaur.reading.ac.uk/view/creators/90007016.html>, Rae, B. D., Heureux, A. M. C., Balestreri, C., Chakravati, L., Schroeder, D. C. and Brownlee, C. (2016) Environmental carbonate chemistry selects for phenotype of recently isolated strains of Emiliania huxleyi. Deep Sea Research Part II: Topical Studies in Oceanography, 127. pp. 28-40. ISSN 0967-0645 doi: https://doi.org/10.1016/j.dsr2.2016.02.010 <https://doi.org/10.1016/j.dsr2.2016.02.010> |
op_doi |
https://doi.org/10.1016/j.dsr2.2016.02.010 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
127 |
container_start_page |
28 |
op_container_end_page |
40 |
_version_ |
1799475763874889728 |