2012 Fiscal Year Final Research Report
Elucidation of catabolic processes of chlorophylls in marine and lacustrine environments
| Project/Area Number |
23870028
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Ecology/Environment
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| Research Institution | Ritsumeikan University |
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Principal Investigator |
KASHIYAMA Yuichiro 立命館大学, 立命館ク゛ローハ゛ル・イノヘ゛ーション研究 機構, ホ゜ストト゛クトラルフェロー (00611782)
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| Project Period (FY) |
2011 – 2012
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| Keywords | クロロフィル / 水圏環境 / プロティスト / 微細藻類 / 光毒性 / シクロエノール |
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| Research Abstract |
Chlorophylls are essential biomolecules for photosynthesis yet also phototoxic to generate singlet oxygen, a highly toxic reactive oxygen for organisms. The present research elucidated that aquatic protists feeding on microalgae degradate chlorophylls into detoxified catabolites “cyclo-enols”. This cyclo-enol catabolism is common among diverse groups of protists and also ubiquitously generated in any aquatic environments, suggesting significant contributions of such protists in aquatic material and energy flows. The catabolism has also been critical for the endosymbiotic evolutionary processes of algae.
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[Journal Article] Ubiquity and quantitative significance of detoxification catabolism of chlorophyll associated with protistan herbivory.2012
Author(s)
Kashiyama Y.*, Yokoyama A.*, Kinoshita Y., Shoji S., Miyashita H., Shiratori T.,Suga H., Ishikawa K., Ishikawa A.,Ishikawa A., Inouye I., Ishida K.,Fujinuma D., Aoki K., Kobayashi M.,Nomoto S., Mizoguchi T., Tamiaki H.
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Journal Title
Proceedings of National Academy of Sciences of the United States of America
Volume: Vol.109
Pages: 17328-17335
Peer Reviewed
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