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Mitochondrial electron transport activity and metabolism of experimentally bleached hermatypic corals
http://hdl.handle.net/2241/00138347
http://hdl.handle.net/2241/00138347941546ed-555c-4284-a11e-6d2f5d08ecd0
名前 / ファイル | ライセンス | アクション |
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JEMBE_475 (7.9 MB)
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Item type | Journal Article(1) | |||||
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公開日 | 2016-04-01 | |||||
タイトル | ||||||
タイトル | Mitochondrial electron transport activity and metabolism of experimentally bleached hermatypic corals | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
アゴスティーニ, シルバン
× アゴスティーニ, シルバン× Fujimura, Hiroyuki× Hayashi, Hiroyuki× Fujita, Kazuhiko |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Bleached corals (Porites cylindrica and Galaxea fascicularis) were obtained through extended incubation (over 45 days) under light depletion and privation: low light and dark conditions, and heat stress (32 °C). The colonies in the different treatments became bleached and had reduced metabolic rates, photosynthesis, calcification and respiration; reduced biomass, zooxanthellae density, and chlorophyll a concentrations; and reduced mitochondrial electron transport system activity, which represent potential respiration rates. The most important reduction in mitochondrial electron transport activity was shown when the activities were normalized by the unit of surface and not by the unit of host protein. This result indicates that the reduction in activity could be mainly explained by the reduction of biomass and tissue thickness. However, increased Manganese Superoxide dismutase (Mn SOD) activity, a mitochondrial SOD, suggests that ROS production occurs in the mitochondria under heat stress with the consequence of potentially damaging the electron transport system. The reduced calcification rates observed are hypothesized to be the results of a decrease in the energy available for calcification due to the reduced photosynthetic rates, limiting the availability of substrates for respiration and therefore the energy production, and the decreased in the number of active mitochondrial electron transport system. Electron transport system activity associated with respiration is the basis of all metabolic processes and is not biased by incubation like traditional measurements of respiration in an aquarium. Therefore, ETSA could be used as an overall indicator of coral health, especially for host animal health. | |||||
書誌情報 |
Journal of experimental marine biology and ecology 巻 475, p. 100-107, 発行日 2016-02 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0022-0981 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00697537 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1016/j.jembe.2015.11.012 | |||||
権利 | ||||||
権利情報 | © 2015. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | |||||
著者版フラグ | ||||||
値 | author | |||||
出版者 | ||||||
出版者 | Elsevier |