Corals regulate the distribution and abundance of Symbiodiniaceae and biomolecules in response to changing water depth and sea surface temperature

Thumbnail Image
Date
2021-01-26
Authors
Sivaguru, Mayandi
Todorov, Lauren G.
Fouke, Courtney E.
Munro, Cara M. O.
Fouke, Kyle W.
Fouke, Kaitlyn E.
Baughman, Melinda E.
Fouke, Bruce W.
Alternative Title
Date Created
Location
DOI
10.1038/s41598-021-81520-0
Related Materials
Replaces
Replaced By
Keywords
Autofluorescence
Two-photon microscopy
X-ray Micro CT
Water Depth
Bathymetry
Sea surface temperature
Symbiodiniaceae symbiont
chromatophores
calmodulin
carbonic anhydrase
mucus
Scleractinian corals
Orbicella annularis
Orbicella faveolata
Abstract
The Scleractinian corals Orbicella annularis and O. faveolata have survived by acclimatizing to environmental changes in water depth and sea surface temperature (SST). However, the complex physiological mechanisms by which this is achieved remain only partially understood, limiting the accurate prediction of coral response to future climate change. This study quantitatively tracks spatial and temporal changes in Symbiodiniaceae and biomolecule (chromatophores, calmodulin, carbonic anhydrase and mucus) abundance that are essential to the processes of acclimatization and biomineralization. Decalcified tissues from intact healthy Orbicella biopsies, collected across water depths and seasonal SST changes on Curaçao, were analyzed with novel autofluorescence and immunofluorescence histology techniques that included the use of custom antibodies. O. annularis at 5 m water depth exhibited decreased Symbiodiniaceae and increased chromatophore abundances, while O. faveolata at 12 m water depth exhibited inverse relationships. Analysis of seasonal acclimatization of the O. faveolata holobiont in this study, combined with previous reports, suggests that biomolecules are differentially modulated during transition from cooler to warmer SST. Warmer SST was also accompanied by decreased mucus production and decreased Symbiodiniaceae abundance, which is compensated by increased photosynthetic activity enhanced calcification. These interacting processes have facilitated the remarkable resiliency of the corals through geological time.
Description
© The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Sivaguru, M., Todorov, L. G., Fouke, C. E., Munro, C. M. O., Fouke, K. W., Fouke, K. E., Baughman, M. E., & Fouke, B. W. Corals regulate the distribution and abundance of Symbiodiniaceae and biomolecules in response to changing water depth and sea surface temperature. Scientific Reports, 11(1), (2021): 2230, https://doi.org/10.1038/s41598-021-81520-0.
Embargo Date
Citation
Sivaguru, M., Todorov, L. G., Fouke, C. E., Munro, C. M. O., Fouke, K. W., Fouke, K. E., Baughman, M. E., & Fouke, B. W. (2021). Corals regulate the distribution and abundance of Symbiodiniaceae and biomolecules in response to changing water depth and sea surface temperature. Scientific Reports, 11(1), 2230.
Cruises
Cruise ID
Cruise DOI
Vessel Name
Except where otherwise noted, this item's license is described as Attribution 4.0 International