Light respiratory processes and gross photosynthesis in two scleractinian corals.
The light dependency of respiratory activity of two scleractinian corals was examined using O2 microsensors and CO2 exchange measurements. Light respiration increased strongly but asymptotically with elevated irradiance in both species. Light respiration in Pocillopora damicornis was higher than in...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2014-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC4216011?pdf=render |
| _version_ | 1818311475758891008 |
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| author | Verena Schrameyer Daniel Wangpraseurt Ross Hill Michael Kühl Anthony W D Larkum Peter J Ralph |
| author_facet | Verena Schrameyer Daniel Wangpraseurt Ross Hill Michael Kühl Anthony W D Larkum Peter J Ralph |
| author_sort | Verena Schrameyer |
| collection | DOAJ |
| description | The light dependency of respiratory activity of two scleractinian corals was examined using O2 microsensors and CO2 exchange measurements. Light respiration increased strongly but asymptotically with elevated irradiance in both species. Light respiration in Pocillopora damicornis was higher than in Pavona decussata under low irradiance, indicating species-specific differences in light-dependent metabolic processes. Overall, the coral P. decussata exhibited higher CO2 uptake rates than P. damicornis over the experimental irradiance range. P. decussata also harboured twice as many algal symbionts and higher total protein biomass compared to P. damicornis, possibly resulting in self-shading of the symbionts and/or changes in host tissue specific light distribution. Differences in light respiration and CO2 availability could be due to host-specific characteristics that modulate the symbiont microenvironment, its photosynthesis, and hence the overall performance of the coral holobiont. |
| first_indexed | 2024-12-13T08:02:33Z |
| format | Article |
| id | doaj.art-8bea1a0d054c446fb0b35bd00cea55fc |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-13T08:02:33Z |
| publishDate | 2014-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-8bea1a0d054c446fb0b35bd00cea55fc2022-12-21T23:54:23ZengPublic Library of Science (PLoS)PLoS ONE1932-62032014-01-01910e11081410.1371/journal.pone.0110814Light respiratory processes and gross photosynthesis in two scleractinian corals.Verena SchrameyerDaniel WangpraseurtRoss HillMichael KühlAnthony W D LarkumPeter J RalphThe light dependency of respiratory activity of two scleractinian corals was examined using O2 microsensors and CO2 exchange measurements. Light respiration increased strongly but asymptotically with elevated irradiance in both species. Light respiration in Pocillopora damicornis was higher than in Pavona decussata under low irradiance, indicating species-specific differences in light-dependent metabolic processes. Overall, the coral P. decussata exhibited higher CO2 uptake rates than P. damicornis over the experimental irradiance range. P. decussata also harboured twice as many algal symbionts and higher total protein biomass compared to P. damicornis, possibly resulting in self-shading of the symbionts and/or changes in host tissue specific light distribution. Differences in light respiration and CO2 availability could be due to host-specific characteristics that modulate the symbiont microenvironment, its photosynthesis, and hence the overall performance of the coral holobiont.http://europepmc.org/articles/PMC4216011?pdf=render |
| spellingShingle | Verena Schrameyer Daniel Wangpraseurt Ross Hill Michael Kühl Anthony W D Larkum Peter J Ralph Light respiratory processes and gross photosynthesis in two scleractinian corals. PLoS ONE |
| title | Light respiratory processes and gross photosynthesis in two scleractinian corals. |
| title_full | Light respiratory processes and gross photosynthesis in two scleractinian corals. |
| title_fullStr | Light respiratory processes and gross photosynthesis in two scleractinian corals. |
| title_full_unstemmed | Light respiratory processes and gross photosynthesis in two scleractinian corals. |
| title_short | Light respiratory processes and gross photosynthesis in two scleractinian corals. |
| title_sort | light respiratory processes and gross photosynthesis in two scleractinian corals |
| url | http://europepmc.org/articles/PMC4216011?pdf=render |
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