Cell wall organic matrix composition and biomineralization across reef‐building coralline algae under global change
Cell wall organic matrix composition and biomineralization across reef‐building coralline algae under global change
Crustose coralline algae (CCA) are one of the most important benthic substrate consolidators on coral reefs through their ability to deposit calcium carbonate on an organic matrix in their cell walls. Discrete polysaccharides have been recognized for their role in biomineralization, yet little is known about the carbohydrate composition of organic matrices across CCA taxa and whether they have the capacity to modulate their organic matrix constituents amidst environmental change, particularly the threats of ocean acidification (OA) and warming. We simulated elevated pCO 2 and temperature (IPCC RCP 8.5) and subjected four mid-shelf Great Barrier Reef species of CCA to 2 months of experimentation. To assess the variability in surficial monosaccharide composition and biomineralization across species and treatments, we determined the monosaccharide composition of the polysaccharides present in the cell walls of surficial algal tissue and quantified calcification. Our results revealed dissimilarity among species' monosaccharide constituents, which suggests that organic matrices are composed of different polysaccharides across CCA taxa. We also observed that species differentially modulate composition in response to ocean acidification and warming. Our findings suggest that both variability in composition and ability to modulate monosaccharide abundance may play a crucial role in surficial biomineralization dynamics under the stress of OA and global warming.
biomineralization, calcification, coral reefs, crustose coralline algae, global warming, monosaccharides, ocean acidification, organic matrix
Bergstrom, Ellie
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Lahnstein, Jelle
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Collins, Helen
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Page, Tessa M.
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Bulone, Vincent
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Diaz‐Pulido, Guillermo
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22 November 2022
Bergstrom, Ellie
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Lahnstein, Jelle
3b16e6cc-5c01-44ee-aa34-5b820482eb73
Collins, Helen
d9d0b2c5-f3b2-4d6a-b129-8cc2f340ea56
Page, Tessa M.
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Bulone, Vincent
3338a919-f920-423e-bcd1-172fa51c9155
Diaz‐Pulido, Guillermo
4aa5bb51-2c2a-4768-8716-d2342504a103
Bergstrom, Ellie, Lahnstein, Jelle, Collins, Helen, Page, Tessa M., Bulone, Vincent and Diaz‐Pulido, Guillermo
(2022)
Cell wall organic matrix composition and biomineralization across reef‐building coralline algae under global change.
Journal of Phycology.
(doi:10.1111/jpy.13290).
Abstract
Crustose coralline algae (CCA) are one of the most important benthic substrate consolidators on coral reefs through their ability to deposit calcium carbonate on an organic matrix in their cell walls. Discrete polysaccharides have been recognized for their role in biomineralization, yet little is known about the carbohydrate composition of organic matrices across CCA taxa and whether they have the capacity to modulate their organic matrix constituents amidst environmental change, particularly the threats of ocean acidification (OA) and warming. We simulated elevated pCO 2 and temperature (IPCC RCP 8.5) and subjected four mid-shelf Great Barrier Reef species of CCA to 2 months of experimentation. To assess the variability in surficial monosaccharide composition and biomineralization across species and treatments, we determined the monosaccharide composition of the polysaccharides present in the cell walls of surficial algal tissue and quantified calcification. Our results revealed dissimilarity among species' monosaccharide constituents, which suggests that organic matrices are composed of different polysaccharides across CCA taxa. We also observed that species differentially modulate composition in response to ocean acidification and warming. Our findings suggest that both variability in composition and ability to modulate monosaccharide abundance may play a crucial role in surficial biomineralization dynamics under the stress of OA and global warming.
Text
Journal of Phycology - 2022 - Bergstrom - Cell wall organic matrix composition and biomineralization across reef‐building
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More information
Accepted/In Press date: 27 October 2022
e-pub ahead of print date: 22 November 2022
Published date: 22 November 2022
Additional Information:
Funding Information:
This study took place on in the sea country of the traditional owners, the Dingaal people. This project was supported by the Australian Research Council (Discovery grant DP160103071), Griffith University School of Environment and Science (postgraduate funding), and the Australian Rivers Institute. This research was conducted under permit G14/36625.1 from the Great Barrier Reef Marine Park Authority. Thanks to LIRS staff, Anne Hoggett, and Lyle Vail for greatly facilitating fieldwork. Our thanks to Dr. Christopher Doropoulos and Dr. Merinda Nash for providing valuable feedback on the manuscript, and to Alea Laidlaw and Xander Carlson for their experimental assistance. Open access publishing facilitated by Griffith University, as part of the Wiley ‐ Griffith University agreement via the Council of Australian University Librarians. Jiigurru
Publisher Copyright:
© 2022 The Authors. Journal of Phycology published by Wiley Periodicals LLC on behalf of Phycological Society of America.
Keywords:
biomineralization, calcification, coral reefs, crustose coralline algae, global warming, monosaccharides, ocean acidification, organic matrix
Identifiers
Local EPrints ID: 473084
URI: http://eprints.soton.ac.uk/id/eprint/473084
ISSN: 1529-8817
PURE UUID: 111bcb79-f086-409c-b0a1-ab81e23dec7a
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Date deposited: 10 Jan 2023 17:52
Last modified: 17 Mar 2024 04:12
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Contributors
Author:
Ellie Bergstrom
Author:
Jelle Lahnstein
Author:
Helen Collins
Author:
Tessa M. Page
Author:
Vincent Bulone
Author:
Guillermo Diaz‐Pulido
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