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dc.contributor.authorOchsenkühn, Michael A.
dc.contributor.authorRöthig, Till
dc.contributor.authorD’Angelo, Cecilia
dc.contributor.authorWiedenmann, Jörg
dc.contributor.authorVoolstra, Christian R.
dc.date.accessioned2019-01-16T11:20:02Z
dc.date.available2019-01-16T11:20:02Z
dc.date.issued2017-08-16
dc.identifier.citationOchsenkühn, M. A. et al. (2017) ‘The role of floridoside in osmoadaptation of coral-associated algal endosymbionts to high-salinity conditions’, 3 (8):e1602047. doi: 10.1126/sciadv.1602047en
dc.identifier.doi10.1126/sciadv.1602047
dc.identifier.urihttp://hdl.handle.net/10545/623303
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.
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.language.isoenen
dc.publisherAmerican Association for the Advancement of Scienceen
dc.relation.urlhttp://advances.sciencemag.org/lookup/doi/10.1126/sciadv.1602047en
dc.rightsArchived with thanks to Science Advancesen
dc.subjectCoral reefen
dc.subjectSalinityen
dc.subjectOsmoadjustmenten
dc.titleThe role of floridoside in osmoadaptation of coral-associated algal endosymbionts to high-salinity conditions.en
dc.typeArticleen
dc.identifier.eissn2375-2548
dc.contributor.departmentKing Abdullah University of Science and Technology (KAUST)en
dc.contributor.departmentUniversity of Southamptonen
dc.contributor.departmentNew York University Abu Dhabien
dc.identifier.journalScience Advancesen
dcterms.dateAccepted2017-07-19
refterms.dateFOA2019-02-28T18:04:48Z
html.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.


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