Lateral light transfer ensures efficient resource distribution in symbiont-bearing corals
Coral tissue optics has received very little attention in the past, although the interaction between tissue and light is central to our basic understanding of coral physiology. Here we used fibre-optic and electrochemical microsensors along with variable chlorophyll fluorescence imaging to directly...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2018
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| Online Access: | https://hdl.handle.net/10356/88223 http://hdl.handle.net/10220/45711 |
| _version_ | 1826111372705923072 |
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| author | Larkum, Anthony William D. Wangpraseurt, Daniel Franklin, Jim Szabó, Milán Ralph, Peter J. Kühl, Michael |
| author2 | School of Biological Sciences |
| author_facet | School of Biological Sciences Larkum, Anthony William D. Wangpraseurt, Daniel Franklin, Jim Szabó, Milán Ralph, Peter J. Kühl, Michael |
| author_sort | Larkum, Anthony William D. |
| collection | NTU |
| description | Coral tissue optics has received very little attention in the past, although the interaction between tissue and light is central to our basic understanding of coral physiology. Here we used fibre-optic and electrochemical microsensors along with variable chlorophyll fluorescence imaging to directly measure lateral light propagation within living coral tissues. Our results show that corals can transfer light laterally within their tissues to a distance of ~2 cm. Such light transport stimulates O2 evolution and photosystem II operating efficiency in areas >0.5–1 cm away from direct illumination. Light is scattered strongly in both coral tissue and skeleton, leading to photon trapping and lateral redistribution within the tissue. Lateral light transfer in coral tissue is a new mechanism by which light is redistributed over the coral colony and we argue that tissue optical properties are one of the key factors in explaining the high photosynthetic efficiency of corals. |
| first_indexed | 2024-10-01T02:49:37Z |
| format | Journal Article |
| id | ntu-10356/88223 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:49:37Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/882232023-02-28T17:02:08Z Lateral light transfer ensures efficient resource distribution in symbiont-bearing corals Larkum, Anthony William D. Wangpraseurt, Daniel Franklin, Jim Szabó, Milán Ralph, Peter J. Kühl, Michael School of Biological Sciences Singapore Centre for Environmental Life Sciences Engineering DRNTU::Science::Biological sciences Coral Reef Tissue Optics Coral tissue optics has received very little attention in the past, although the interaction between tissue and light is central to our basic understanding of coral physiology. Here we used fibre-optic and electrochemical microsensors along with variable chlorophyll fluorescence imaging to directly measure lateral light propagation within living coral tissues. Our results show that corals can transfer light laterally within their tissues to a distance of ~2 cm. Such light transport stimulates O2 evolution and photosystem II operating efficiency in areas >0.5–1 cm away from direct illumination. Light is scattered strongly in both coral tissue and skeleton, leading to photon trapping and lateral redistribution within the tissue. Lateral light transfer in coral tissue is a new mechanism by which light is redistributed over the coral colony and we argue that tissue optical properties are one of the key factors in explaining the high photosynthetic efficiency of corals. Published version 2018-08-29T03:01:57Z 2019-12-06T16:58:34Z 2018-08-29T03:01:57Z 2019-12-06T16:58:34Z 2014 Journal Article Wangpraseurt, D., Larkum, A. W. D., Franklin, J., Szabo, M., Ralph, P. J., & Kuhl, M. (2014). Lateral light transfer ensures efficient resource distribution in symbiont-bearing corals. Journal of Experimental Biology, 217, 489-498. doi:10.1242/jeb.091116 0022-0949 https://hdl.handle.net/10356/88223 http://hdl.handle.net/10220/45711 10.1242/jeb.091116 en Journal of Experimental Biology © 2014 The Author(s) (published by The Company of Biologists Ltd). This paper was published in Journal of Experimental Biology and is made available as an electronic reprint (preprint) with permission of The Company of Biologists Ltd. The published version is available at: [http://dx.doi.org/10.1242/jeb.091116]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 13 p. application/pdf |
| spellingShingle | DRNTU::Science::Biological sciences Coral Reef Tissue Optics Larkum, Anthony William D. Wangpraseurt, Daniel Franklin, Jim Szabó, Milán Ralph, Peter J. Kühl, Michael Lateral light transfer ensures efficient resource distribution in symbiont-bearing corals |
| title | Lateral light transfer ensures efficient resource distribution in symbiont-bearing corals |
| title_full | Lateral light transfer ensures efficient resource distribution in symbiont-bearing corals |
| title_fullStr | Lateral light transfer ensures efficient resource distribution in symbiont-bearing corals |
| title_full_unstemmed | Lateral light transfer ensures efficient resource distribution in symbiont-bearing corals |
| title_short | Lateral light transfer ensures efficient resource distribution in symbiont-bearing corals |
| title_sort | lateral light transfer ensures efficient resource distribution in symbiont bearing corals |
| topic | DRNTU::Science::Biological sciences Coral Reef Tissue Optics |
| url | https://hdl.handle.net/10356/88223 http://hdl.handle.net/10220/45711 |
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