Next Article in Journal
Benthic Nutrient Fluxes from Mangrove Sediments of an Anthropogenically Impacted Estuary in Southern China
Next Article in Special Issue
Temperature Dependence of Respiration in Larvae and Adult Colonies of the Corals Acropora tenuis and Pocillopora damicornis
Previous Article in Journal
Exploring Water Level Sensitivity for Metropolitan New York during Sandy (2012) Using Ensemble Storm Surge Simulations
Previous Article in Special Issue
Temperature Effects on the Growth Rates and Photosynthetic Activities of Symbiodinium Cells
Open AccessArticle

Dimethylsulphoniopropionate (DMSP) as an Indicator of Bleaching Tolerance in Scleractinian Corals

by Graham B. Jones *,† and Stacey King
Marine Ecology Research Centre, School of Environment, Science and Engineering, Southern Cross University, Lismore, NSW 2480, Australia
*
Author to whom correspondence should be addressed.
These two authors contributed equally to this work.
Academic Editor: Loke Ming Chou
J. Mar. Sci. Eng. 2015, 3(2), 444-465; https://doi.org/10.3390/jmse3020444
Received: 1 April 2015 / Accepted: 15 June 2015 / Published: 23 June 2015
(This article belongs to the Special Issue Climate Change and Coral Reefs Ecosystems)
Thermal tolerance tests on Acropora millepora, a common Indo-Pacific hard coral, have shown that adult corals can acquire increased thermal tolerance by shuffling existing type C to type D Symbiodinium zooxanthellae when subjected to increased seawater temperatures. We report here dimethylsulphoniopropionate (DMSP) concentrations in A. millepora and examine links between DMSP concentrations, zooxanthellae clade, and bleaching tolerance. DMSP analysis on native and transplanted corals from three locations in the Great Barrier Reef indicated that the lower thermal tolerance in type C zooxanthellae coincided with variable DMSP concentrations, whilst the more thermal tolerant type D zooxanthellae had more stable areal DMSP concentrations as seawater temperatures increased. Our results suggest this increased thermal tolerance in type D zooxanthellae may reflect the ability of these coral symbionts to conserve their antioxidant DMSP levels to relatively constant concentrations, enabling the coral to overcome the build-up of oxygen free radicals in the cytoplasm of A. millepora. A conceptual diagram illustrates how the antioxidants DMS (P) participate in the bleaching process by scavenging oxygen free radicals and form DMSO, thus moderating coral bleaching and increasing thermotolerance. View Full-Text
Keywords: dimethylsulphoniopropionate; coral bleaching; Great Barrier Reef; antioxidants; thermal tolerance; zooxanthellae clades dimethylsulphoniopropionate; coral bleaching; Great Barrier Reef; antioxidants; thermal tolerance; zooxanthellae clades
Show Figures

Figure 1

MDPI and ACS Style

Jones, G.B.; King, S. Dimethylsulphoniopropionate (DMSP) as an Indicator of Bleaching Tolerance in Scleractinian Corals. J. Mar. Sci. Eng. 2015, 3, 444-465.

Show more citation formats Show less citations formats

Article Access Map by Country/Region

1
Only visits after 24 November 2015 are recorded.
Back to TopTop