2013 Fiscal Year Final Research Report
Regulatory mechanisms of the auxin response mediated by nuclear-cytoplasmic transport systems
| Project/Area Number |
22370018
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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 | Kobe University |
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Principal Investigator |
FUKAKI Hidehiro 神戸大学, 理学(系)研究科(研究院), 准教授 (80324979)
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| Co-Investigator(Renkei-kenkyūsha) |
MIMURA Tetsuro 神戸大学, 大学院理学研究科, 教授 (20174120)
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| Project Period (FY) |
2010-04-01 – 2013-03-31
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| Keywords | 植物ホルモン / 遺伝子発現 / 核-細胞質間輸送 / シロイヌナズナ / マイクロRNA / 側根形成 |
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| Research Abstract |
Auxin is one of the important hormones for growth and development in plants. In general, auxin-mediated growth and developmental processes are regulated by auxin synthesis, auxin transport and auxin-dependent gene expression. However, the mechanisms of auxin responses still remain unknown. Genetic analyses using Arabidopsis thaliana mutants defective in lateral root formation have shown that HASTY/exportin-5, a component of the nuclear pore complex, is involved in auxin-mediated lateral root formation. In this project, we found that both biosynthesis of microRNAs and nuclear-cytoplasmic transport are necessary for the regulation of SLR/IAA14-ARF7/19 module-dependent auxin response in lateral root formation.
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