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窒素飢餓応答における植物特異的なDof転写因子の分子機能の解明

Research Project

Project/Area Number 21J14077
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Review Section Basic Section 38010:Plant nutrition and soil science-related
Research InstitutionThe University of Tokyo

Principal Investigator

卓 梦娜  東京大学, 農学生命科学研究科, 特別研究員(PD)

Project Period (FY) 2021-04-28 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2022: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2021: ¥800,000 (Direct Cost: ¥800,000)
Keywords窒素欠乏 / Dof転写因子
Outline of Research at the Start

The Dof1.7 encoding plant-specific Dof transcription factor was previously suggested to be involved in NIGT1-mediated nitrogen (N) starvation responses. The aim of this study is to elucidate the physiological functions of Dof1.7 in N starvation responses and related regulatory mechanisms.

Outline of Annual Research Achievements

In the first year, I have revealed that in model plant Arabidopsis, NIGT1 transcription factors, key regulators for N deficiency responses, directly repressed transcription of Dof1.7, and also revealed that knockout mutation of NIGT1 and Dof1.7 differentially affected the expression of three NRT2 genes encoding high-affinity nitrate transporters.
In the second year, I examined the transcriptional relationship between Dof1.7 and the three NRT2 genes by ChIP and co-transfection assay and revealed that Dof1.7 directly activated the NRT2.5 promoter and indirectly activated the NRT2.4 promoter with the presence of NIGT1.1. I have completed a manuscript of this series of research and am preparing it for publication in a high-rank international journal.

Research Progress Status

令和4年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和4年度が最終年度であるため、記入しない。

Report

(2 results)
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (4 results)

All 2022 2021

All Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (2 results)

  • [Journal Article] RWP-RK domain-containing transcription factors in the Viridiplantae: biology and phylogenetic relationships2022

    • Author(s)
      Sakuraba Yasuhito、Zhuo Mengna、Yanagisawa Shuichi
    • Journal Title

      Journal of Experimental Botany

      Volume: 73 Issue: 13 Pages: 4323-4337

    • DOI

      10.1093/jxb/erac229

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The Arabidopsis NLP7-HB52/54-VAR2 pathway modulates energy utilization in diverse light and nitrogen conditions2022

    • Author(s)
      Ariga Takuto、Sakuraba Yasuhito、Zhuo Mengna、Yang Mailun、Yanagisawa Shuichi
    • Journal Title

      Current Biology

      Volume: 32 Issue: 24 Pages: 5344-5353

    • DOI

      10.1016/j.cub.2022.10.024

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] The role of Dof1.7 transcription factor in NIGT1-regulated nitrogen deficiency responses in Arabidopsis2022

    • Author(s)
      卓 梦娜
    • Organizer
      第63回日本植物生理学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] The Role of Dof1.7 Transcription Factor in NIGT1-Mediated Nitrogen Starvation Responses in Arabidopsis2021

    • Author(s)
      卓 梦娜
    • Organizer
      日本土壌肥料学会2021年度北海道大会
    • Related Report
      2021 Annual Research Report

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Published: 2021-05-27   Modified: 2024-03-26  

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