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Dissection of iron deficiency response involving novel short peptide FEP1.

Research Project

Project/Area Number 21H02509
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 44030:Plant molecular biology and physiology-related
Research InstitutionOkayama University

Principal Investigator

Hirayama Takashi  岡山大学, 資源植物科学研究所, 教授 (10228819)

Co-Investigator(Kenkyū-buntansha) 馬 建鋒  岡山大学, 資源植物科学研究所, 教授 (80260389)
横正 健剛  岡山大学, 資源植物科学研究所, 准教授 (50790622)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2023: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2022: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2021: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
Keywords鉄欠乏応答 / 短鎖ペプチド / シロイヌナズナ / 網羅的遺伝子発現解析 / シダ植物 / FEP1/IMA3 / 維管束組織 / シダ / ミトコンドリア / 鉄恒常性 / 遺伝学的解析 / 網羅的転写物解析 / alphascreen / FEP1
Outline of Research at the Start

植物は生育に必須の鉄を必要に応じて土壌から吸収し、過不足なく植物の各器官に配分することで鉄の恒常性維持を図っているが、鉄欠乏応答機構の全容は未解明である。我々は最近、個体レベルの鉄欠乏応答に関与すると考えられる短鎖ペプチド、FEP1を見出した。fep1機能欠損変異株では、根の鉄含有量は不変であるにもかかわらず、葉では鉄欠乏状態を呈しており、個体レベルの鉄恒常性が維持されていないことが示されている。本課題研究では、この分子機能未知のFEP1を研究の起点として植物の鉄欠乏応答機構の全容解明を目指す。

Outline of Final Research Achievements

Plants efficiently absorb essential iron from the soil, a critical resource on which many organisms, including humans, depend for survival. While significant progress has been made in understanding plant iron homeostasis, identifying iron transporters and transcription factors regulating their gene expression, there remain many unknowns regarding inter-tissue iron transport and communication. This research project aims to elucidate the function of a novel short peptide, FEP1, in iron deficiency response. Through the analysis of FEP1 loss-of-function mutants, ectopic expression transformants, and the study of FEP1-like genes in ferns, the ancestors of vascular plants, we have demonstrated that FEP1 plays an important role in vascular tissues and may function by moving between cells.

Academic Significance and Societal Importance of the Research Achievements

FEP/IMAペプチドの鉄欠乏応答制御における分子機構の理解は進んだが、組織間鉄輸送における生理機能、さらにその機能における短鎖ペプチドの必然性については、不明な点が多い。本課題研究では、fep1変異の詳細な解析からFEP1が細胞・組織間鉄輸送において重要な役割を持つことを明示した。この知見は、鉄応答機構の理解を推進し、また農作物の鉄吸収の制御を可能にする技術の開発などの応用展開も期待される。また、ミトコンドリアmRNAのpolyA付加制御に関わる因子の変異ags2を同定した。AGS2の研究によりミトコンドリア機能制御に関する多くの知見の獲得が期待される、

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (15 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (1 results) Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (8 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results) Remarks (3 results)

  • [Int'l Joint Research] Institute of Plant and Microbial Biology/Academia Sinica(その他の国・地域 台湾)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] FE UPTAKE‐INDUCING PEPTIDE1 maintains Fe translocation by controlling Fe deficiency response genes in the vascular tissue of <i>Arabidopsis</i>2022

    • Author(s)
      Okada Satoshi、Lei Gui J.、Yamaji Naoki、Huang Sheng、Ma Jian F.、Mochida Keiichi、Hirayama Takashi
    • Journal Title

      Plant, Cell &amp; Environment

      Volume: 45 Issue: 11 Pages: 3322-3337

    • DOI

      10.1111/pce.14424

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Plant Hormonomics: A Key Tool for Deep Physiological Phenotyping to Improve Crop Productivity2022

    • Author(s)
      Hirayama Takashi、Mochida Keiichi
    • Journal Title

      Plant and Cell Physiology

      Volume: 63 Issue: 12 Pages: 1826-1839

    • DOI

      10.1093/pcp/pcac067

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] PARN-like Proteins Regulate Gene Expression in Land Plant Mitochondria by Modulating mRNA Polyadenylation2021

    • Author(s)
      Takashi Hirayama
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 22 Issue: 19 Pages: 10766-10766

    • DOI

      10.3390/ijms221910776

    • NAID

      120007180270

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Analysis of AGS2 RNA helicase implicated in the post-transcriptional regulation of mitochondria mRNA2024

    • Author(s)
      Haruko Kaita, June-Sik Kim, Akihito Mamiya, Munetaka Sugiyama, Keiichi Mochida, Takashi Hirayama
    • Organizer
      日本植物生理学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Uncovering the link between RNA editing and polyadenylation, two mysterious modifications of plant mitochondrial mRNA2024

    • Author(s)
      Akihito Mamiya, Kayoko Yamamoto, Takehito Kobayashi, Yusuke Yagi, Takahiro Nakamura, Hidehiro Fukaki, June-Sik Kim, Issei Nakazato, Shin-ichi Arimura, Munetaka Sugiyama, Takashi Hirayama
    • Organizer
      日本植物生理学会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Arabidopsis SD5/DROL1 protein, a subunit of U5 snRNP, regulates nutrient response through pre-mRNA splicing and jasmonic acid signaling2024

    • Author(s)
      Kodai Ishibashi, Toshihiro Arae, Takeshi Yoshizumi, Yukio Kurihara, Takashi Kuromori, Zofia Szweykowska-Kulinska, Artur Jarmolowski, Takashi Hirayama, Minami Matsui, and Misato Ohtani
    • Organizer
      日本植物生理学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 圃場作物ライフコースホルモン一斉分析で見えてきたもの2024

    • Author(s)
      平山隆志
    • Organizer
      日本植物生理学会関連集会ワークショップ「植物ホルモン分析ワークショップ」
    • Related Report
      2023 Annual Research Report
  • [Presentation] A defect in an RNA metabolic enzyme suppresses the adverse effect of the accumulation of polyadenylated mitochondrial mRNA in Arabidopsis2023

    • Author(s)
      Takashi Hirayama, Kim June-Sik, Aleksandr Sorokin, Keiichi Mochida
    • Organizer
      International Conference of Arabidopsis Research
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] nteraction between polyadenylation and C-to-U editing of mitochondrial mRNA involved in cytochrome c maturation2023

    • Author(s)
      Akihito Mamiya, Kayoko Yamamoto, Takehito Kobayashi, Yusuke Yagi, Takahiro Nakamura, Takashi Hirayama, Hidehiro Fukaki, Munetaka Sugiyama
    • Organizer
      International Conference of Arabidopsis Research
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ミトコンドリアにおけるポリA 付加 mRNA の蓄積の影響を抑制するシロイヌナズナの変異について2023

    • Author(s)
      平山隆志,金俊植,持田恵一
    • Organizer
      日本植物生理学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Diversity of FEP/IMA genes across higher plants.2022

    • Author(s)
      Aleksandr Sorokin, Takashi Hirayama
    • Organizer
      日本植物生理学会
    • Related Report
      2021 Annual Research Report
  • [Remarks] 環境応答機構研究グループ

    • URL

      https://www.rib.okayama-u.ac.jp/research/ers-hp

    • Related Report
      2023 Annual Research Report
  • [Remarks] 岡山大学 資源植物科学研究所 環境応答機構研究グループ

    • URL

      https://www.rib.okayama-u.ac.jp/ers/index-j.html

    • Related Report
      2022 Annual Research Report
  • [Remarks] 岡山大学資源植物科学研究所環境応答機構研究グループ

    • URL

      https://www.rib.okayama-u.ac.jp/ers/index-j.html

    • Related Report
      2021 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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