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Published on: November 12, 2021
Calcifying Coccolithophore: An Evolutionary Advantage Against Extracellular Oxidative Damage
Minjun Yang1, Christopher Batchelor-McAuley1, Samuel Barton2
1Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QZ, Great Britain.
Abstract:
The evolutionary advantages afforded by phytoplankton calcification remain enigmatic. In this work, fluoroelectrochemical experiments reveal that the presence of a CaCO3 shell of a naturally calcifying coccolithophore, Coccolithus braarudii, offers protection against extracellular oxidants as measured by the time required for the switch-off in their chlorophyll signal, compared to the deshelled equivalents, suggesting the shift toward calcification offers some advantages for survival in the surface of radical-rich seawater.
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