Longevity control associated with plant reproduction
| Project/Area Number |
18K19342
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| Research Category |
Grant-in-Aid for Challenging Research (Exploratory)
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| Allocation Type | Multi-year Fund |
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| Review Section |
Medium-sized Section 44:Biology at cellular to organismal levels, and related fields
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| Research Institution | Nara Institute of Science and Technology |
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Principal Investigator |
Ito Toshiro 奈良先端科学技術大学院大学, 先端科学技術研究科, 教授 (90517096)
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| Co-Investigator(Kenkyū-buntansha) |
北口 哲也 東京工業大学, 科学技術創成研究院, 准教授 (60432374)
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| Project Period (FY) |
2018-06-29 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2019: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2018: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Keywords | プログラムセルデス / 発現制御 / 幹細胞 / 増殖抑制 / ヒストン修飾 / イメージング |
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| Outline of Final Research Achievements |
In Arabidopsis flower development, we show that stem cell activities are actively terminated by multiple genetic pathways (Nature Comm 2018; EMBO J. 2018; Plant Cell 2019). To understand how program cell death (PCD) is involved in reproductive development, we established PCD reporter lines and examined their expression patterns. PCD reporters are induced in mature shoot apical meristems (SAMs) and fully grown mature petals. By performing RNA-seq in immature and mature SAMs and petals, we identified signaling pathways genes in reactive oxygen species (ROS) and jasmonic acid (JA), respectively. These results show that PCD happens in plant reproduction through multiple signaling cascades.
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| Academic Significance and Societal Importance of the Research Achievements |
花がおしべやめしべをつくり、次世代の種を残すためには、花の元となる幹細胞が十分に増殖した後に、増殖を止める必要がある。私達は生殖にともなっておきる植物のプログラム細胞死について解析した結果、新たに、茎頂や花弁においてプログラム細胞死が起きていることがわかった。茎頂においてはROSシグナル系路が、花弁においてはジャスモン酸シグナル系路が特異的に誘導されていた。プログラム細胞死が調節できるようになれば、園芸植物の花の改良や穀物類の増産などが期待できる。
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Report
(3 results)
Research Products
(30 results)
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[Journal Article] CRABS CLAW and SUPERMAN coordinate hormone-, stress- and metabolic-related gene expression during Arabidopsis stamen development2019
Author(s)
Lee, H. Z., Tatsumi, Y. Ichihashi, Y., Suzuki, T., Shibata, A., Shirasu, K., Yamaguchi, N., Ito, T.
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Journal Title
Front Plant Sci.
Volume: 7
Pages: 437-437
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Chromatin-mediated feed-forward auxin biosynthesis in floral meristem determinacy.2018
Author(s)
Yamaguchi, N., Huang, J., Tatsumi, Y., Abe, M., Sugano, S. S., Kojima, M., Takebayashi, Y., Kiba, T., Yokoyama, R., Nishitani, K., Sakakibara, H., and Ito, T.
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Journal Title
Nature Commun.
Volume: 9
Issue: 1
Pages: 5290-5290
DOI
NAID
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] SUPERMAN regulates floral whorl boundaries through control of auxin biosynthesis.2018
Author(s)
Xu, Y., Prunet, N., Gan, E-S., Wang, Y., Stewart, D., Wellmer, F., Huang, J., Yamaguchi, N., Tatsumi, Y., Kojima, M., Kiba, T., Sakakibara, H., Jack, T.P., Meyerowitz, E.M., Ito, T.
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Journal Title
EMBO Journal
Volume: -
Issue: 11
DOI
NAID
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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