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Transcriptomic analysis of the response of Acropora millepora to hypo-osmotic stress provides insights into DMSP biosynthesis by corals

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dc.contributor Australian Institute Of Marine Science
dc.contributor Climate Change Cluster C3
dc.contributor University Of Technology Sydney
dc.contributor Coll Sci & Engn
dc.contributor Australian National University
dc.contributor Australian Natl Univ
dc.contributor Dept Mol & Cell Biol
dc.contributor James Cook Univ
dc.contributor James Cook University
dc.contributor Univ Technol
dc.contributor Aims Jcu
dc.contributor Australian Inst Marine Sci
dc.contributor Arc Ctr Excellence Coral Reef Studies
dc.contributor Evolut & Ecol Res Sch Biol
dc.contributor Criobe
dc.contributor Lab Excellence Corail
dc.contributor Fac Sci MILLER, DAVID J. AGUILAR, CATALINA RAINA, JEAN-BAPTISTE MOTTI, CHERIE A. FORET, SYLVAIN HAYWARD, DAVID C. LAPEYRE, BRUNO BOURNE, DAVID G. 2017-09-24T18:14:45Z 2017-09-24T18:14:45Z 2019-05-09T01:04:28Z 2017-09-24T18:14:45Z 2017-09-24T18:14:45Z 2019-05-09T01:04:28Z 2017-08-14
dc.identifier.citation Aguilar C, Raina JB, Motti CA, Foret S, Hayward DC, Lapeyre B, Bourne DG, Miller DJ (2017) Transcriptomic analysis of the response of Acropora millepora to hypo-osmotic stress provides insights into DMSP biosynthesis by corals. BMC Genomics 18: 612
dc.identifier.issn 1471-2164
dc.description.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.
dc.description.sponsorship CA gratefully acknowledges receipt of an AIMS@JCU scholarship, and the work was supported by the Australian Research Council via the ARC Centre of Excellence for Coral Reef Studies. Note that the funding bodies were not involved in the design of the study or in any aspect of the collection, analysis and interpretation of the data or paper writing.
dc.language English
dc.subject Great-barrier-reef
dc.subject Biotechnology & Applied Microbiology
dc.subject 3-dimethylsulfoniopropionate
dc.subject Identification
dc.subject Building Corals
dc.subject Genome Reveals
dc.subject Methionine
dc.subject Sulfur-compounds
dc.subject Dimethylsulfoniopropionate Biosynthesis
dc.subject Coral
dc.subject S-methylmethionine
dc.subject Salinity
dc.subject Genetics & Heredity
dc.subject Salinity Stress
dc.subject Dmsp Pathway
dc.subject Acropora Millepora
dc.subject Marine-algae
dc.title Transcriptomic analysis of the response of Acropora millepora to hypo-osmotic stress provides insights into DMSP biosynthesis by corals
dc.type journal article
dc.identifier.doi 10.1186/s12864-017-3959-0
dc.identifier.wos WOS:000408036300004

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