Regulation of organ growth by synthesis of very-long-chain fatty acids in Arabidopsis
| Project/Area Number |
25440136
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Plant molecular biology/Plant physiology
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| Research Institution | Nara Institute of Science and Technology |
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Principal Investigator |
Okushima Yoko 奈良先端科学技術大学院大学, バイオサイエンス研究科, 助教 (00432592)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 器官成長 / シロイヌナズナ / 脂質 / 植物ホルモン / 脂肪酸 |
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| Outline of Final Research Achievements |
In plants, very-long-chain fatty acids (VLCFAs) are used for the synthesis of triacylglycerols, cuticular waxes and sphingolipids. Recently we have revealed that VLCFA synthesis in the shoot epidermis suppresses cell proliferation in internal tissues by down-regulating cytokinin biosynthesis in the vasculature, thereby restricting aerial organ growth. However, the mechanism how VLCFA synthesis controls cytokinin biosynthesis in a non-autonomous manner remains largely elusive. In this study, we found that brassinosteroid signals are involved in VLCFA-mediated plant growth regulation. In addition, by the genetic screening of factors working in VLCFA-mediated growth regulation, we identified 5 lines of defective in cafenstrole response (dcr) mutants. Candidates of the responsible genes for two dcr mutants have been identified by the whole genome sequencing.
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Report
(4 results)
Research Products
(8 results)
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[Journal Article] The Arabidopsis SIAMESE-RELATED cyclin-dependent kinase inhibitors SMR5 and SMR7 regulate the DNA damage checkpoint in response to reactive oxygen species.2014
Author(s)
Yi D, Alvim Kamei CL, Cools T, Vanderauwera S, Takahashi N, Okushima Y, Eekhout T, Yoshiyama KO, Larkin J, Van den Daele H, Conklin P, Britt A, Umeda M, De Veylder L.
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Journal Title
Plant Cell
Volume: 26(1)
Pages: 296-309
Related Report
Peer Reviewed
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