The role of floridoside in osmoadaptation of coral-associated algal endosymbionts to high-salinity conditions

Handle URI:
http://hdl.handle.net/10754/625393
Title:
The role of floridoside in osmoadaptation of coral-associated algal endosymbionts to high-salinity conditions
Authors:
Ochsenkuhn, Michael A.; Röthig, Till ( 0000-0001-6359-8589 ) ; D’Angelo, Cecilia; Wiedenmann, Jörg; Voolstra, Christian R. ( 0000-0003-4555-3795 )
Abstract:
The endosymbiosis between Symbiodinium dinoflagellates and stony corals provides the foundation of coral reef ecosystems. The survival of these ecosystems is under threat at a global scale, and better knowledge is needed to conceive strategies for mitigating future reef loss. Environmental disturbance imposing temperature, salinity, and nutrient stress can lead to the loss of the Symbiodinium partner, causing so-called coral bleaching. Some of the most thermotolerant coral-Symbiodinium associations occur in the Persian/Arabian Gulf and the Red Sea, which also represent the most saline coral habitats. We studied whether Symbiodinium alter their metabolite content in response to high-salinity environments. We found that Symbiodinium cells exposed to high salinity produced high levels of the osmolyte 2-O-glycerol-α-d-galactopyranoside (floridoside), both in vitro and in their coral host animals, thereby increasing their capacity and, putatively, the capacity of the holobiont to cope with the effects of osmotic stress in extreme environments. Given that floridoside has been previously shown to also act as an antioxidant, this osmolyte may serve a dual function: first, to serve as a compatible organic osmolyte accumulated by Symbiodinium in response to elevated salinities and, second, to counter reactive oxygen species produced as a consequence of potential salinity and heat stress.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division; Red Sea Research Center (RSRC)
Citation:
Ochsenkühn MA, Röthig T, D’Angelo C, Wiedenmann J, Voolstra CR (2017) The role of floridoside in osmoadaptation of coral-associated algal endosymbionts to high-salinity conditions. Science Advances 3: e1602047. Available: http://dx.doi.org/10.1126/sciadv.1602047.
Publisher:
American Association for the Advancement of Science (AAAS)
Journal:
Science Advances
Issue Date:
17-Aug-2017
DOI:
10.1126/sciadv.1602047
Type:
Article
ISSN:
2375-2548
Sponsors:
This study was supported by the King Abdullah University of Science and Technology under baseline funds to C.R.V. and the Center Competitive Fund Program FCC/1/1973-22-01. Further funding was contributed by the Natural Environment Research Council (NE/K00641X/1 to J.W.) and the European Research Council under the European Union’s Seventh Framework Programme (FP/2007-2013)/European Research Council (grant agreement no. 311179 to J.W.).
Additional Links:
http://advances.sciencemag.org/content/3/8/e1602047
Appears in Collections:
Articles; Red Sea Research Center (RSRC); Biological and Environmental Sciences and Engineering (BESE) Division; Reef Genomics, part of the Global Ocean Genome Project

Full metadata record

DC FieldValue Language
dc.contributor.authorOchsenkuhn, Michael A.en
dc.contributor.authorRöthig, Tillen
dc.contributor.authorD’Angelo, Ceciliaen
dc.contributor.authorWiedenmann, Jörgen
dc.contributor.authorVoolstra, Christian R.en
dc.date.accessioned2017-08-23T11:54:07Z-
dc.date.available2017-08-23T11:54:07Z-
dc.date.issued2017-08-17en
dc.identifier.citationOchsenkühn MA, Röthig T, D’Angelo C, Wiedenmann J, Voolstra CR (2017) The role of floridoside in osmoadaptation of coral-associated algal endosymbionts to high-salinity conditions. Science Advances 3: e1602047. Available: http://dx.doi.org/10.1126/sciadv.1602047.en
dc.identifier.issn2375-2548en
dc.identifier.doi10.1126/sciadv.1602047en
dc.identifier.urihttp://hdl.handle.net/10754/625393-
dc.description.abstractThe endosymbiosis between Symbiodinium dinoflagellates and stony corals provides the foundation of coral reef ecosystems. The survival of these ecosystems is under threat at a global scale, and better knowledge is needed to conceive strategies for mitigating future reef loss. Environmental disturbance imposing temperature, salinity, and nutrient stress can lead to the loss of the Symbiodinium partner, causing so-called coral bleaching. Some of the most thermotolerant coral-Symbiodinium associations occur in the Persian/Arabian Gulf and the Red Sea, which also represent the most saline coral habitats. We studied whether Symbiodinium alter their metabolite content in response to high-salinity environments. We found that Symbiodinium cells exposed to high salinity produced high levels of the osmolyte 2-O-glycerol-α-d-galactopyranoside (floridoside), both in vitro and in their coral host animals, thereby increasing their capacity and, putatively, the capacity of the holobiont to cope with the effects of osmotic stress in extreme environments. Given that floridoside has been previously shown to also act as an antioxidant, this osmolyte may serve a dual function: first, to serve as a compatible organic osmolyte accumulated by Symbiodinium in response to elevated salinities and, second, to counter reactive oxygen species produced as a consequence of potential salinity and heat stress.en
dc.description.sponsorshipThis study was supported by the King Abdullah University of Science and Technology under baseline funds to C.R.V. and the Center Competitive Fund Program FCC/1/1973-22-01. Further funding was contributed by the Natural Environment Research Council (NE/K00641X/1 to J.W.) and the European Research Council under the European Union’s Seventh Framework Programme (FP/2007-2013)/European Research Council (grant agreement no. 311179 to J.W.).en
dc.publisherAmerican Association for the Advancement of Science (AAAS)en
dc.relation.urlhttp://advances.sciencemag.org/content/3/8/e1602047en
dc.rightsThis is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.en
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/en
dc.titleThe role of floridoside in osmoadaptation of coral-associated algal endosymbionts to high-salinity conditionsen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalScience Advancesen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDivision of Science and Engineering, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates.en
dc.contributor.institutionCoral Reef Laboratory/Institute for Life Sciences, Ocean and Earth Science, University of Southampton, Southampton, UK.en
kaust.authorOchsenkuhn, Michael A.en
kaust.authorRöthig, Tillen
kaust.authorVoolstra, Christian R.en
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