2012 Fiscal Year Final Research Report
Mechanism for the partitioning of glycerolipid biosynthetic pathways in leaves and seeds
| Project/Area Number |
22370016
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Plant molecular biology/Plant physiology
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
OHTA Hiroyuki 東京工業大学, バイオ研究基盤支援総合センター, 教授 (20233140)
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| Co-Investigator(Kenkyū-buntansha) |
AWAI Koichiro 静岡大学, 若手グローバル研究リーダー育成拠点, 特任助教 (80431732)
SHIMOJIMA Mie 東京工業大学, バイオ研究基盤支援総合センター, 助教 (90401562)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 代謝生理 / オルガネラ / 脂質 |
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| Research Abstract |
Both membrane and storage lipids are mainly composed of glycerolipids in many living organisms, which commonly contain two or three fatty acid moieties attached to a glycerol backbone. In case of higher plants, all of the fatty acids are synthesized in plastids, whereas the major sites for the membrane and storage lipid biosyntheses are spatially separated in a cell. Since each plant organ contain different ratio of the two types of the glycerolipids and the ratio itself is one of a major feature of each organ identity, it is of interest how plants control the partitioning of the two different biosynthetic pathways for the membrane and storage glycerolipids. In this project, we studied on the strict control system for the partitioning of two different pathways of membrane and storage glycerolipid biosyntheses in each plant organ. In the course of this study, we found several nutrient deficient conditions strongly enhanced TAG synthesis even in leaves, and clarified the importance of phosphatidate phosphohydrolase (PAH1/2) in the leaf TAG synthesis. Moreover, we identified novel mutants which lack suppression of chloroplast membrane biogenesis in roots.
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[Journal Article] Role of galactolipid biosynthesis in coordinated development of photosynthetic complexes and thylakoid membranes during chloroplast biogenesis in Arabidopsis.2013
Author(s)
Kobayashi K, Narise T, Sonoike K, Hashimoto H, Sato N, Kondo M, Nishimura M, Sato M, Toyooka K, Sugimoto K, Wada H, Masuda T, Ohta H. (
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Journal Title
Plant J.
Volume: 73
Pages: 250-261
Peer Reviewed
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[Journal Article] Structural confirmation of a unique carotenoid lactoside2012
Author(s)
Wakahama, T., Laza-Martínez, A.,BinHaji Mohd Taha, A.I., Okuyama, H., Yoshida, K., Kogame, K., Awai, K., Kawachi, M., Maoka, T.and Takaichi, S. (
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Journal Title
Journal of Phycology
Volume: 48
Pages: 1392-1402
Peer Reviewed
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[Journal Article] A monogalactosyldiacylglycerol synthase found in the green sulfur bacterium Chlorobaculum tepidum reveals important roles for galactolipids in photosynthesis2011
Author(s)
Masuda S, Harada J, Yokono M, Yuzawa Y, Shimojima M, Murofushi K, Tanaka H, Masuda H, Murakawa M, Haraguchi T, Kondo M, Nishimura M, Yuasa H, Noguchi M, Oh-Oka H, Tanaka A, Tamiaki H, Ohta H. (
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Journal Title
Plant Cell
Volume: 23
Pages: 2644-2658
Peer Reviewed
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