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Kessler RW, Weiss A, Kuegler S, Hermes C, Wichard T. Macroalgal-bacterial interactions: Role of dimethylsulfoniopropionate in microbial gardening byUlva(Chlorophyta). Mol Ecol 2018; 27:1808-1819. [DOI: 10.1111/mec.14472] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 12/12/2017] [Accepted: 12/12/2017] [Indexed: 02/02/2023]
Affiliation(s)
- Ralf W. Kessler
- Friedrich Schiller University Jena; Institute for Inorganic and Analytical Chemistry; Jena Germany
| | - Anne Weiss
- Friedrich Schiller University Jena; Institute for Inorganic and Analytical Chemistry; Jena Germany
- Jena School for Microbial Communication; Jena Germany
| | - Stefan Kuegler
- Friedrich Schiller University Jena; Institute for Inorganic and Analytical Chemistry; Jena Germany
| | - Cornelia Hermes
- Friedrich Schiller University Jena; Institute for Inorganic and Analytical Chemistry; Jena Germany
| | - Thomas Wichard
- Friedrich Schiller University Jena; Institute for Inorganic and Analytical Chemistry; Jena Germany
- Jena School for Microbial Communication; Jena Germany
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Aguilar C, Raina JB, Motti CA, Fôret S, Hayward DC, Lapeyre B, Bourne DG, Miller DJ. Transcriptomic analysis of the response of Acropora millepora to hypo-osmotic stress provides insights into DMSP biosynthesis by corals. BMC Genomics 2017; 18:612. [PMID: 28806970 PMCID: PMC5557254 DOI: 10.1186/s12864-017-3959-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 07/25/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Dimethylsulfoniopropionate (DMSP) is a small sulphur compound which is produced in prodigious amounts in the oceans and plays a pivotal role in the marine sulfur cycle. Until recently, DMSP was believed to be synthesized exclusively by photosynthetic organisms; however we now know that corals and specific bacteria can also produce this compound. Corals are major sources of DMSP, but the molecular basis for its biosynthesis is unknown in these organisms. RESULTS Here we used salinity stress, which is known to trigger DMSP production in other organisms, in conjunction with transcriptomics to identify coral genes likely to be involved in DMSP biosynthesis. We focused specifically on both adults and juveniles of the coral Acropora millepora: after 24 h of exposure to hyposaline conditions, DMSP concentrations increased significantly by 2.6 fold in adult corals and 1.2 fold in juveniles. Concomitantly, candidate genes enabling each of the necessary steps leading to DMSP production were up-regulated. CONCLUSIONS The data presented strongly suggest that corals use an algal-like pathway to generate DMSP from methionine, and are able to rapidly change expression of the corresponding genes in response to environmental stress. However, our data also indicate that DMSP is unlikely to function primarily as an osmolyte in corals, instead potentially serving as a scavenger of ROS and as a molecular sink for excess methionine produced as a consequence of proteolysis and osmolyte catabolism in corals under hypo-osmotic conditions.
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Affiliation(s)
- Catalina Aguilar
- AIMS@JCU, and Department of Molecular and Cell Biology, James Cook University, Townsville, 4811, Queensland, Australia.,ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, 4811, Queensland, Australia
| | - Jean-Baptiste Raina
- Climate Change Cluster (C3), Faculty of Science, University of Technology, Sydney, NSW, 2007, Australia
| | - Cherie A Motti
- Australian Institute of Marine Science, Townsville, 4810, Queensland, Australia
| | - Sylvain Fôret
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, 4811, Queensland, Australia.,Evolution and Ecology, Research School of Biology, The Australian National University, Canberra, ACT, 2601, Australia
| | - David C Hayward
- Evolution and Ecology, Research School of Biology, The Australian National University, Canberra, ACT, 2601, Australia
| | - Bruno Lapeyre
- Laboratoire d'excellence CORAIL, Centre de Recherches Insulaires et Observatoire de l'Environnement (CRIOBE), Moorea, B.P. 1013, Papeete, French Polynesia
| | - David G Bourne
- AIMS@JCU, and Department of Molecular and Cell Biology, James Cook University, Townsville, 4811, Queensland, Australia. .,Australian Institute of Marine Science, Townsville, 4810, Queensland, Australia. .,College of Science and Engineering, James Cook University, Townsville, 4811, Queensland, Australia.
| | - David J Miller
- AIMS@JCU, and Department of Molecular and Cell Biology, James Cook University, Townsville, 4811, Queensland, Australia. .,ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, 4811, Queensland, Australia.
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