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Tenacious D: Symbiodinium in clade D remain in reef corals at both high and low temperature extremes despite impairment.
J Exp Biol. 2017 04 01; 220(Pt 7):1192-1196.JE

Abstract

Reef corals are sensitive to thermal stress, which induces coral bleaching (the loss of algal symbionts), often leading to coral mortality. However, corals hosting certain symbionts (notably some members of Symbiodinium clade D) resist bleaching when exposed to high temperatures. To determine whether these symbionts are also cold tolerant, we exposed corals hosting either Symbiodinium C3 or D1a to incremental warming (+1°C week-1 to 35°C) and cooling (-1°C week-1 to 15°C), and measured photodamage and symbiont loss. During warming to 33°C, C3 corals were photodamaged and lost >99% of symbionts, while D1a corals experienced photodamage but did not bleach. During cooling, D1a corals suffered more photodamage than C3 corals but still did not bleach, while C3 corals lost 94% of symbionts. These results indicate that photodamage does not always lead to bleaching, suggesting alternate mechanisms exist by which symbionts resist bleaching, and helping explain the persistence of D1a symbionts on recently bleached reefs, with implications for the future of these ecosystems.

Authors+Show Affiliations

Department of Marine Biology and Ecology, Rosenstiel School of Marine and Atmospheric Science, University of Miami, 4600 Rickenbacker Causeway, Miami, FL 33149, USA. Miami Waterkeeper, 12568 N. Kendall Drive, Miami, FL 33186, USA.Department of Marine Biology and Ecology, Rosenstiel School of Marine and Atmospheric Science, University of Miami, 4600 Rickenbacker Causeway, Miami, FL 33149, USA ross.cunning@gmail.com. Hawai'i Institute of Marine Biology, University of Hawai'i at Mānoa, PO Box 1346, Kāne'ohe, HI 96744, USA.Department of Marine Biology and Ecology, Rosenstiel School of Marine and Atmospheric Science, University of Miami, 4600 Rickenbacker Causeway, Miami, FL 33149, USA.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

28108671

Citation

Silverstein, Rachel N., et al. "Tenacious D: Symbiodinium in Clade D Remain in Reef Corals at Both High and Low Temperature Extremes Despite Impairment." The Journal of Experimental Biology, vol. 220, no. Pt 7, 2017, pp. 1192-1196.
Silverstein RN, Cunning R, Baker AC. Tenacious D: Symbiodinium in clade D remain in reef corals at both high and low temperature extremes despite impairment. J Exp Biol. 2017;220(Pt 7):1192-1196.
Silverstein, R. N., Cunning, R., & Baker, A. C. (2017). Tenacious D: Symbiodinium in clade D remain in reef corals at both high and low temperature extremes despite impairment. The Journal of Experimental Biology, 220(Pt 7), 1192-1196. https://doi.org/10.1242/jeb.148239
Silverstein RN, Cunning R, Baker AC. Tenacious D: Symbiodinium in Clade D Remain in Reef Corals at Both High and Low Temperature Extremes Despite Impairment. J Exp Biol. 2017 04 1;220(Pt 7):1192-1196. PubMed PMID: 28108671.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Tenacious D: Symbiodinium in clade D remain in reef corals at both high and low temperature extremes despite impairment. AU - Silverstein,Rachel N, AU - Cunning,Ross, AU - Baker,Andrew C, Y1 - 2017/01/20/ PY - 2016/08/15/received PY - 2017/01/18/accepted PY - 2017/1/22/pubmed PY - 2017/9/9/medline PY - 2017/1/22/entrez KW - Coral bleaching KW - Montastraea cavernosa KW - Symbiodinium KW - Symbiosis SP - 1192 EP - 1196 JF - The Journal of experimental biology JO - J Exp Biol VL - 220 IS - Pt 7 N2 - Reef corals are sensitive to thermal stress, which induces coral bleaching (the loss of algal symbionts), often leading to coral mortality. However, corals hosting certain symbionts (notably some members of Symbiodinium clade D) resist bleaching when exposed to high temperatures. To determine whether these symbionts are also cold tolerant, we exposed corals hosting either Symbiodinium C3 or D1a to incremental warming (+1°C week-1 to 35°C) and cooling (-1°C week-1 to 15°C), and measured photodamage and symbiont loss. During warming to 33°C, C3 corals were photodamaged and lost >99% of symbionts, while D1a corals experienced photodamage but did not bleach. During cooling, D1a corals suffered more photodamage than C3 corals but still did not bleach, while C3 corals lost 94% of symbionts. These results indicate that photodamage does not always lead to bleaching, suggesting alternate mechanisms exist by which symbionts resist bleaching, and helping explain the persistence of D1a symbionts on recently bleached reefs, with implications for the future of these ecosystems. SN - 1477-9145 UR - https://www.unboundmedicine.com/medline/citation/28108671/Tenacious_D:_Symbiodinium_in_clade_D_remain_in_reef_corals_at_both_high_and_low_temperature_extremes_despite_impairment_ L2 - http://jeb.biologists.org/cgi/pmidlookup?view=long&pmid=28108671 DB - PRIME DP - Unbound Medicine ER -