Poster Australian Marine Sciences Association 2022

The Potential Role of Organic Sulfur Molecules Dimethylsulfoniopropionate (DMSP) in Newly Settle Coral Skeleton Formation  (#524)

Geoffrey D Yau 1 2 3 , David G Bourne 1 2 , David J Miller 4 5 , Cherie A Motti 2
  1. College of Science & Engineering, James Cook University, Townsville, Queensland, Australia
  2. Australian Institute of Marine Science, Townsville, Queensland, Australia
  3. AIMS@JCU, James Cook University, Townsville, Queensland, Australia
  4. College of Public Health, Medical & Vet Sciences, James Cook University, Townsville, Queensland, Australia
  5. ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, Australia

Coral is one of the largest producers of dimethylsulfoniopropionate (DMSP) with most derived from the endosymbiotic Symbiodinaceae within the tissues, though the coral animal is also able to produce DMSP. DMSP and its breakdown products dimethyl sulphide and acrylate have important ecological function in global sulphur cycling. High levels of DMSP and acrylate are present in fast growing Acroporids while low or undetectable levels are found in slower growing non-Acroporid species. These compounds are hypothesised to be critical in rapid skeleton formation. Here I investigate if DMSP has an additional function in the coral calcification process, through measuring DMSP concentration within newly settle coral juvenile tissue with and without symbionts inoculation. Hence, if higher DMSP concentration correlates to faster coral growth. This study will provide crucial information on the potential factors that may affect coral recruit growth in their highest mortality life stage.

  1. Direct measurement of dimethylsulfoniopropionate (DMSP) in reef-building corals using quantitative nuclear magnetic resonance (qNMR) spectroscopy. Dianne M.Tapiolas, Jean-Baptiste Raina, Adrian Lutz, Bette L.Willis, Cherie A.Motti
  2. DMSP biosynthesis by an animal and its role in coral thermal stress response. Jean-Baptiste Raina, Dianne M Tapiolas, Sylvain Forêt, Adrian Lutz, David Abrego, Janja Ceh, Francois O Seneca, Peta L Clode, David G Bourne, Bette L Willis, Cherie A Motti
  3. High levels of acrylate in the Great Barrier Reef coral Acropora millepora. D. M. Tapiolas, C. A. Motti, P. Holloway & S. G. Boyle