Variability in the primary site of photosynthetic damage in Symbiodinium sp. (Dinophyceae) exposed to thermal stress

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dc.contributor.author Buxton, Lucy en_US
dc.contributor.author Takahashi, Shunichi en_US
dc.contributor.author Hill, Ross en_US
dc.contributor.author Ralph, Peter en_US
dc.contributor.editor en_US
dc.date.accessioned 2012-10-12T03:33:31Z
dc.date.available 2012-10-12T03:33:31Z
dc.date.issued 2012 en_US
dc.identifier 2011001869 en_US
dc.identifier.citation Buxton Lucy et al. 2012, 'Variability in the primary site of photosynthetic damage in Symbiodinium sp. (Dinophyceae) exposed to thermal stress', Wiley-Blackwell, vol. 48, no. 1, pp. 117-126. en_US
dc.identifier.issn 0022-3646 en_US
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/18184
dc.description.abstract Exposure to elevated temperature is known to cause photosynthetic inhibition in the coral symbiont Symbiodinium sp. Through the use of the artificial electron acceptor, methyl viologen, this study identified how reduced photosynthetic capacity occurs as a result of inhibition up- and/or downstream of ferredoxin in Symbiodinium sp. in hospite and in culture. Heterogeneity between coral species and symbiont clades was identified in the thermal sensitivity of photosynthesis in the symbionts of the scleractinian corals Stylophora pistillata and Pocillopora damicornis, as well as among Symbiodinium cultures of clades A, B, and C. The in hospite symbionts of S. pistillata and the cultured clade C Symbiodinium both exhibited similar patterns in that their primary site of thermal inhibition occurred downstream of ferredoxin at 32 degrees C. In contrast, the primary site of thermal inhibition occurred upstream of ferredoxin in clades A and B at 32 degrees C, while at 34 degrees C, all samples showed combined up- and downstream inhibition. Although clade C is common to both P. damicornis and S. pistillata, the manner of thermal inhibition was not consistent when observed in hospite. Results showed that there is heterogeneity in the primal site of thermal damage in Symbiodinium among coral species and symbiont clades. en_US
dc.language en_US
dc.publisher Wiley-Blackwell en_US
dc.relation.isbasedon http://dx.doi.org/10.1111/j.1529-8817.2011.01099.x en_US
dc.title Variability in the primary site of photosynthetic damage in Symbiodinium sp. (Dinophyceae) exposed to thermal stress en_US
dc.parent Journal of Phycology en_US
dc.journal.volume 48 en_US
dc.journal.number 1 en_US
dc.publocation USA en_US
dc.identifier.startpage 117 en_US
dc.identifier.endpage 126 en_US
dc.cauo.name SCI.Environmental Sciences en_US
dc.conference Verified OK en_US
dc.for 060700 en_US
dc.personcode 995502 en_US
dc.personcode 0000062658 en_US
dc.personcode 040568 en_US
dc.personcode 890085 en_US
dc.percentage 100 en_US
dc.classification.name Plant Biology en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity en_US
dc.description.keywords Calvin cycle; coral bleaching; pulse amplitude modulated fluorometry; Symbiodinium; thermal inhibition en_US
dc.staffid 890085 en_US


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