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15592324.2014.989036.pdf | 537.39 kB | Adobe PDF | 見る/開く |
タイトル: | Oil body-mediated defense against fungi: From tissues to ecology. |
著者: | Shimada, Takashi L Takano, Yoshitaka https://orcid.org/0000-0003-1427-1322 (unconfirmed) Hara-Nishimura, Ikuko |
著者名の別形: | 島田, 貴士 西村, いくこ |
キーワード: | abscised leaf caleosin fungal infection oil body oxylipin phytoalexin senescence α-dioxygenase CLO3 caleosin3 2-HOT 2-hydroxy-octadecatrienoic acid HPOT hydroperoxyoctadecatrienoic acid LTP3 lipid transfer protein 3 GPAT2 glycerol-3-phosphate acyltransferase 2 LOX lipoxygenase |
発行日: | 12-Mar-2015 |
出版者: | Taylor & Francis Group |
誌名: | Plant signaling & behavior |
巻: | 10 |
号: | 2 |
論文番号: | e989036 |
抄録: | Oil bodies are localized in the seed cells and leaf cells of many land plants. They have a passive function as storage organelles for lipids. We recently reported that the leaf oil body has an active function as a subcellular factory that produces an antifungal oxylipin during fungal infection in Arabidopsis thaliana. Here, we propose a model for oil body-mediated plant defense. Remarkably, senescent leaves develop oil bodies and accumulate α-dioxygenase1 (α-DOX1) and caleosin3 (CLO3) on the oil-body membrane, which catalyze the conversion of α-linolenic acid to the phytoalexin 2-hydroxy-octadecatrienoic acid (2-HOT). The model proposes that senescent leaves actively produce antifungal oxylipins and phytoalexins, and abscised leaves contain a mixture of antifungal compounds. In natural settings, the abscised leaves with antifungal compounds accumulate in leaf litter and function to protect healthy tissues and young plants from fungal infection. Plants might have evolved this ecological function for dead leaves. |
著作権等: | This is an Accepted Manuscript of an article published by Taylor & Francis in "Plant Signaling & Behavior" on 12 Mar 2015, available online: http://www.tandfonline.com/10.4161/15592324.2014.989036. The full-text file will be made open to the public on 12 Mar 2016 in accordance with publisher's 'Terms and Conditions for Self-Archiving' この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 This is not the published version. Please cite only the published version. |
URI: | http://hdl.handle.net/2433/199568 |
DOI(出版社版): | 10.4161/15592324.2014.989036 |
PubMed ID: | 25764319 |
出現コレクション: | 学術雑誌掲載論文等 |
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