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Host–symbiont combinations dictate the photo-physiological response of reef-building corals to thermal stress

High sea surface temperatures often lead to coral bleaching wherein reef-building corals lose significant numbers of their endosymbiotic dinoflagellates (Symbiodiniaceae). These increasingly frequent bleaching events often result in large scale coral mortality, thereby devasting reef systems through...

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Autores principales: Hoadley, Kenneth D., Lewis, Allison M., Wham, Drew C., Pettay, D. Tye, Grasso, Chris, Smith, Robin, Kemp, Dustin W., LaJeunesse, Todd C., Warner, Mark E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6620294/
https://www.ncbi.nlm.nih.gov/pubmed/31292499
http://dx.doi.org/10.1038/s41598-019-46412-4
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author Hoadley, Kenneth D.
Lewis, Allison M.
Wham, Drew C.
Pettay, D. Tye
Grasso, Chris
Smith, Robin
Kemp, Dustin W.
LaJeunesse, Todd C.
Warner, Mark E.
author_facet Hoadley, Kenneth D.
Lewis, Allison M.
Wham, Drew C.
Pettay, D. Tye
Grasso, Chris
Smith, Robin
Kemp, Dustin W.
LaJeunesse, Todd C.
Warner, Mark E.
author_sort Hoadley, Kenneth D.
collection PubMed
description High sea surface temperatures often lead to coral bleaching wherein reef-building corals lose significant numbers of their endosymbiotic dinoflagellates (Symbiodiniaceae). These increasingly frequent bleaching events often result in large scale coral mortality, thereby devasting reef systems throughout the world. The reef habitats surrounding Palau are ideal for investigating coral responses to climate perturbation, where many inshore bays are subject to higher water temperature as compared with offshore barrier reefs. We examined fourteen physiological traits in response to high temperature across various symbiotic dinoflagellates in four common Pacific coral species, Acropora muricata, Coelastrea aspera, Cyphastrea chalcidicum and Pachyseris rugosa found in both offshore and inshore habitats. Inshore corals were dominated by a single homogenous population of the stress tolerant symbiont Durusdinium trenchii, yet symbiont thermal response and physiology differed significantly across coral species. In contrast, offshore corals harbored specific species of Cladocopium spp. (ITS2 rDNA type-C) yet all experienced similar patterns of photoinactivation and symbiont loss when heated. Additionally, cell volume and light absorption properties increased in heated Cladocopium spp., leading to a greater loss in photo-regulation. While inshore coral temperature response was consistently muted relative to their offshore counterparts, high physiological variability in D. trenchii across inshore corals suggests that bleaching resilience among even the most stress tolerant symbionts is still heavily influenced by their host environment.
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spelling pubmed-66202942019-07-18 Host–symbiont combinations dictate the photo-physiological response of reef-building corals to thermal stress Hoadley, Kenneth D. Lewis, Allison M. Wham, Drew C. Pettay, D. Tye Grasso, Chris Smith, Robin Kemp, Dustin W. LaJeunesse, Todd C. Warner, Mark E. Sci Rep Article High sea surface temperatures often lead to coral bleaching wherein reef-building corals lose significant numbers of their endosymbiotic dinoflagellates (Symbiodiniaceae). These increasingly frequent bleaching events often result in large scale coral mortality, thereby devasting reef systems throughout the world. The reef habitats surrounding Palau are ideal for investigating coral responses to climate perturbation, where many inshore bays are subject to higher water temperature as compared with offshore barrier reefs. We examined fourteen physiological traits in response to high temperature across various symbiotic dinoflagellates in four common Pacific coral species, Acropora muricata, Coelastrea aspera, Cyphastrea chalcidicum and Pachyseris rugosa found in both offshore and inshore habitats. Inshore corals were dominated by a single homogenous population of the stress tolerant symbiont Durusdinium trenchii, yet symbiont thermal response and physiology differed significantly across coral species. In contrast, offshore corals harbored specific species of Cladocopium spp. (ITS2 rDNA type-C) yet all experienced similar patterns of photoinactivation and symbiont loss when heated. Additionally, cell volume and light absorption properties increased in heated Cladocopium spp., leading to a greater loss in photo-regulation. While inshore coral temperature response was consistently muted relative to their offshore counterparts, high physiological variability in D. trenchii across inshore corals suggests that bleaching resilience among even the most stress tolerant symbionts is still heavily influenced by their host environment. Nature Publishing Group UK 2019-07-10 /pmc/articles/PMC6620294/ /pubmed/31292499 http://dx.doi.org/10.1038/s41598-019-46412-4 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Hoadley, Kenneth D.
Lewis, Allison M.
Wham, Drew C.
Pettay, D. Tye
Grasso, Chris
Smith, Robin
Kemp, Dustin W.
LaJeunesse, Todd C.
Warner, Mark E.
Host–symbiont combinations dictate the photo-physiological response of reef-building corals to thermal stress
title Host–symbiont combinations dictate the photo-physiological response of reef-building corals to thermal stress
title_full Host–symbiont combinations dictate the photo-physiological response of reef-building corals to thermal stress
title_fullStr Host–symbiont combinations dictate the photo-physiological response of reef-building corals to thermal stress
title_full_unstemmed Host–symbiont combinations dictate the photo-physiological response of reef-building corals to thermal stress
title_short Host–symbiont combinations dictate the photo-physiological response of reef-building corals to thermal stress
title_sort host–symbiont combinations dictate the photo-physiological response of reef-building corals to thermal stress
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6620294/
https://www.ncbi.nlm.nih.gov/pubmed/31292499
http://dx.doi.org/10.1038/s41598-019-46412-4
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