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

Kenneth D. Hoadley, Allison M. Lewis, Drew C. Wham, D. Tye Pettay, Chris Grasso, Robin Smith, Dustin W. Kemp, Todd C. Lajeunesse, Mark E. Warner

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish (US)
Article number9985
JournalScientific reports
Volume9
Issue number1
DOIs
StatePublished - Dec 1 2019

Fingerprint

Coral Reefs
Anthozoa
Hot Temperature
Dinoflagellida
Temperature
Ecosystem
Palau
Ribosomal DNA
Climate
Cell Size
Oceans and Seas

All Science Journal Classification (ASJC) codes

  • General

Cite this

Hoadley, K. D., Lewis, A. M., Wham, D. C., Pettay, D. T., Grasso, C., Smith, R., ... Warner, M. E. (2019). Host–symbiont combinations dictate the photo-physiological response of reef-building corals to thermal stress. Scientific reports, 9(1), [9985]. https://doi.org/10.1038/s41598-019-46412-4
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. In: Scientific reports. 2019 ; Vol. 9, No. 1.
@article{4ff6385dce0242b6a0a26d15c56fa38d,
title = "Host–symbiont combinations dictate the photo-physiological response of reef-building corals to thermal stress",
abstract = "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.",
author = "Hoadley, {Kenneth D.} and Lewis, {Allison M.} and Wham, {Drew C.} and Pettay, {D. Tye} and Chris Grasso and Robin Smith and Kemp, {Dustin W.} and Lajeunesse, {Todd C.} and Warner, {Mark E.}",
year = "2019",
month = "12",
day = "1",
doi = "10.1038/s41598-019-46412-4",
language = "English (US)",
volume = "9",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",
number = "1",

}

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.

In: Scientific reports, Vol. 9, No. 1, 9985, 01.12.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Host–symbiont combinations dictate the photo-physiological response of reef-building corals to thermal stress

AU - Hoadley, Kenneth D.

AU - Lewis, Allison M.

AU - Wham, Drew C.

AU - Pettay, D. Tye

AU - Grasso, Chris

AU - Smith, Robin

AU - Kemp, Dustin W.

AU - Lajeunesse, Todd C.

AU - Warner, Mark E.

PY - 2019/12/1

Y1 - 2019/12/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85068905355&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85068905355&partnerID=8YFLogxK

U2 - 10.1038/s41598-019-46412-4

DO - 10.1038/s41598-019-46412-4

M3 - Article

VL - 9

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

IS - 1

M1 - 9985

ER -