Stimulated Respiration and Net Photosynthesis in Cassiopeia sp. during Glucose Enrichment Suggests in hospite CO2 Limitation of Algal Endosymbionts

Handle URI:
http://hdl.handle.net/10754/625843
Title:
Stimulated Respiration and Net Photosynthesis in Cassiopeia sp. during Glucose Enrichment Suggests in hospite CO2 Limitation of Algal Endosymbionts
Authors:
Radecker, Nils; Pogoreutz, Claudia; Wild, Christian; Voolstra, Christian R. ( 0000-0003-4555-3795 )
Abstract:
The endosymbiosis between cnidarians and dinoflagellates of the genus Symbiodinium is key to the high productivity of tropical coral reefs. In this endosymbiosis, Symbiodinium translocate most of their photosynthates to their animal host in exchange for inorganic nutrients. Among these, carbon dioxide (CO ) derived fromhost respiration helps to meet the carbon requirements to sustain photosynthesis of the dinoflagellates. Nonetheless, recent studies suggest that productivity in symbiotic cnidarians such as corals is CO -limited. Here we show that glucose enrichment stimulates respiration and gross photosynthesis rates by 80 and 140%, respectively, in the symbiotic upside-down jellyfish Cassiopeia sp. from the Central Red Sea. Our findings show that glucose was rapidly consumed and respired within the Cassiopeia sp. holobiont. The resulting increase of CO availability in hospite in turn likely stimulated photosynthesis in Symbiodinium. Hence, the increase of photosynthesis under these conditions suggests that CO limitation of Symbiodinium is a common feature of stable cnidarian holobionts and that the stimulation of holobiont metabolism may attenuate this CO limitation.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division; Red Sea Research Center (RSRC)
Citation:
Rädecker N, Pogoreutz C, Wild C, Voolstra CR (2017) Stimulated Respiration and Net Photosynthesis in Cassiopeia sp. during Glucose Enrichment Suggests in hospite CO2 Limitation of Algal Endosymbionts. Frontiers in Marine Science 4. Available: http://dx.doi.org/10.3389/fmars.2017.00267.
Publisher:
Frontiers Media SA
Journal:
Frontiers in Marine Science
Issue Date:
15-Aug-2017
DOI:
10.3389/fmars.2017.00267
Type:
Article
ISSN:
2296-7745
Sponsors:
The authors would like to thank Paul Müller and Zenon Batang for allocation of workspace and their assistance with the aquarium facilities at the Coastal and Marine Resources Core Lab (CMOR). We further thank the two reviewers for their constructive feedback and helpful comments., Research reported in this publication was supported by KAUST baseline funding to CRV and grant Wi 2677/9-1 awarded to CW by German Research Foundation (DFG).
Additional Links:
https://www.frontiersin.org/articles/10.3389/fmars.2017.00267/full
Appears in Collections:
Articles; Red Sea Research Center (RSRC); Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorRadecker, Nilsen
dc.contributor.authorPogoreutz, Claudiaen
dc.contributor.authorWild, Christianen
dc.contributor.authorVoolstra, Christian R.en
dc.date.accessioned2017-10-09T09:03:14Z-
dc.date.available2017-10-09T09:03:14Z-
dc.date.issued2017-08-15en
dc.identifier.citationRädecker N, Pogoreutz C, Wild C, Voolstra CR (2017) Stimulated Respiration and Net Photosynthesis in Cassiopeia sp. during Glucose Enrichment Suggests in hospite CO2 Limitation of Algal Endosymbionts. Frontiers in Marine Science 4. Available: http://dx.doi.org/10.3389/fmars.2017.00267.en
dc.identifier.issn2296-7745en
dc.identifier.doi10.3389/fmars.2017.00267en
dc.identifier.urihttp://hdl.handle.net/10754/625843-
dc.description.abstractThe endosymbiosis between cnidarians and dinoflagellates of the genus Symbiodinium is key to the high productivity of tropical coral reefs. In this endosymbiosis, Symbiodinium translocate most of their photosynthates to their animal host in exchange for inorganic nutrients. Among these, carbon dioxide (CO ) derived fromhost respiration helps to meet the carbon requirements to sustain photosynthesis of the dinoflagellates. Nonetheless, recent studies suggest that productivity in symbiotic cnidarians such as corals is CO -limited. Here we show that glucose enrichment stimulates respiration and gross photosynthesis rates by 80 and 140%, respectively, in the symbiotic upside-down jellyfish Cassiopeia sp. from the Central Red Sea. Our findings show that glucose was rapidly consumed and respired within the Cassiopeia sp. holobiont. The resulting increase of CO availability in hospite in turn likely stimulated photosynthesis in Symbiodinium. Hence, the increase of photosynthesis under these conditions suggests that CO limitation of Symbiodinium is a common feature of stable cnidarian holobionts and that the stimulation of holobiont metabolism may attenuate this CO limitation.en
dc.description.sponsorshipThe authors would like to thank Paul Müller and Zenon Batang for allocation of workspace and their assistance with the aquarium facilities at the Coastal and Marine Resources Core Lab (CMOR). We further thank the two reviewers for their constructive feedback and helpful comments., Research reported in this publication was supported by KAUST baseline funding to CRV and grant Wi 2677/9-1 awarded to CW by German Research Foundation (DFG).en
dc.publisherFrontiers Media SAen
dc.relation.urlhttps://www.frontiersin.org/articles/10.3389/fmars.2017.00267/fullen
dc.rightsThis is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectCarbon limitationen
dc.subjectHeterotrophyen
dc.subjectSymbiodiniumen
dc.subjectSymbiosisen
dc.subjectUpside-down jellyfishen
dc.titleStimulated Respiration and Net Photosynthesis in Cassiopeia sp. during Glucose Enrichment Suggests in hospite CO2 Limitation of Algal Endosymbiontsen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalFrontiers in Marine Scienceen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionMarine Ecology Working Group, Faculty of Biology and Chemistry (FB 2), University of Bremen, Bremen, , Germanyen
kaust.authorRadecker, Nilsen
kaust.authorPogoreutz, Claudiaen
kaust.authorVoolstra, Christian R.en
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