Roles of fundamental RNA metabolisms in regulatory mechanisms restricting cell division at initial stages of plant organogenesis
| Project/Area Number |
25291057
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial 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 | The University of Tokyo |
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Principal Investigator |
SUGIYAMA Munetaka 東京大学, 理学(系)研究科(研究院), 准教授 (50202130)
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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 |
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2015: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2014: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2013: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
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| Keywords | 温度感受性突然変異体 / 細胞分裂 / シロイヌナズナ / シュート再生 / 側根原基 / ミトコンドリア / リボソームRNA / RNA代謝 |
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| Outline of Final Research Achievements |
Restriction of cell division at the early stage of plant organogenesis has been studied mostly with temperature-sensitive mutants of Arabidopsis, which has provided the following findings. At the initiation of lateral root primordium development, anticlinal, asymmetric division of pericycle cells is restricted to a few rounds by a mitochondrion-related mechanism. This control is particularly vulnerable to defects of mitochondrial mRNA metabolism and high temperatures. Polyadenylation is a key event in the mitochondrial mRNA defects. When adventitious bud primordia are built during shoot regeneration, cell division is restricted along with repressive control of the CUC-STM pathway. Impairments of ribosomal biosynthesis disrupt these regulations, via the transcription factor ANAC082, as a stress response.
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Report
(4 results)
Research Products
(26 results)
