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Plant immunity regulation according to humidity-related cues

Research Project

Project/Area Number 21H02507
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 InstitutionNara Institute of Science and Technology

Principal Investigator

Saijo Yusuke  奈良先端科学技術大学院大学, 先端科学技術研究科, 教授 (50587764)

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: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2021: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Keywords植物免疫 / 湿度 / 病原細菌 / 水 / シロイヌナズナ / 植物微生物相互作用 / 免疫受容体 / リン酸化 / ABA / 環境応答 / 微生物相互作用
Outline of Research at the Start

モデル植物シロイヌナズナを用いて、病原菌の感染被害が拡大する多湿環境における植物と病原細菌の相互作用様式の変化を遺伝子発現レベルで明らかにする。同時に湿度環境が植物の共生菌の集団組成に与える影響も明らかにする。さらに、病原細菌が植物ホルモン応答系をハイジャックして葉内で水獲得や感染・増殖を進める仕組みとそれに対抗する植物の免疫機構について解明を進める。これらの研究を通して、植物の環境適応を大きく左右する「植物・微生物・環境因子」の相互作用メカニズムの解明に貢献するとともに、作物のストレス耐性強化技術の開発に向けて実効性の高い情報を提供する。

Outline of Final Research Achievements

In Arabidopsis thaliana, we gain important insight into the mechanisms by which plants enhance immunity against pathogenic bacteria that promote infection through water acquisition, and also into bacterial infection strategies under high humidity. We show that PIP water channel phosphorylation by the immune co-receptor BAK1 and induction of abscisic acid (ABA) catabolism enzyme CYP707a3 as humidity-inducible key defense outputs against bacterial water soaking. We obtained transcriptome, BAK1-interactome and phospho-proteome profiles in leaves under high humidity. Reverse genetic studies on some of humidity-regulated genes and proteins revealed a module involving specific members of CNGC Ca2+-channels and transcription factors required for humidity-induced leaf water defense. Conversely, we show that bacteria suppress these outputs by type III secretion effects, in particular AvrPtoB, thereby hijacking host ABA responses to cause water soaking.

Academic Significance and Societal Importance of the Research Achievements

植物病害が拡大する高湿度環境において、植物は湿度上昇を感知して免疫を向上させること、及びその際に特定の水チャネルPIP分子種のリン酸化並びにアブシジン酸(ABA)分解酵素遺伝子の発現誘導が重要な役割を果たすことを明らかにした。後者の誘導に必要なCa2+イオンチャネルと転写制御因子を同定した。逆に、病原細菌が同応答を阻害し植物ABA応答をハイジャックすることで感染部位に水を集めること、及びそれに寄与するエフェクター感染促進因子も明らかにした。本成果は、湿度情報に基づく植物免疫・細菌感染戦略の調節機構に関して進歩性の高い知見を提供し、耐病性増強技術の開発にも資するものである。

Report

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

    (15 results)

All 2023 2022 2021 Other

All Int'l Joint Research (2 results) Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (8 results) (of which Int'l Joint Research: 2 results,  Invited: 4 results) Remarks (1 results)

  • [Int'l Joint Research] INRA/CNRS/University of Montpellier(フランス)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] MPIPZ(ドイツ)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] A Continuous Extension of Plant Biotic Interactions Research2022

    • Author(s)
      Saijo Yusuke、Betsuyaku Shigeyuki、Toyota Masatsugu、Tsuda Kenichi
    • Journal Title

      Plant and Cell Physiology

      Volume: 63 Issue: 10 Pages: 1321-1323

    • DOI

      10.1093/pcp/pcac132

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] MAP KINASE PHOSPHATASE1 promotes osmotolerance by suppressing PHYTOALEXIN DEFICIENT4-independent immunity2022

    • Author(s)
      Kohei Uchida, Masahiro Yamaguchi, Kazuki Kanamori, Hirotaka Ariga, Kazuho Isono, Takuma Kajino, Keisuke Tanaka, Yusuke Saijo, Izumi Yotsui, Yoichi Sakata, Teruaki Taji
    • Journal Title

      Plant Physiology

      Volume: - Issue: 2 Pages: 1128-1138

    • DOI

      10.1093/plphys/kiac131

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Recognition of microbe/damage-associated molecular patterns by leucine-rich repeat pattern recognition receptor kinases confers salt tolerance in plants2021

    • Author(s)
      Saijo Yusuke、Loo Eliza、Tajima Yuri、Yamada Kohji、Kido Shota、Hirase Taishi、Ariga Hirotaka、Fujiwara Tadashi、Tanaka Keisuke、Taji Teruaki、Somssich Imre、Parker Jane E
    • Journal Title

      Molecular Plant-Microbe Interactions?

      Volume: - Issue: 7 Pages: 554-566

    • DOI

      10.1094/mpmi-07-21-0185-fi

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Promotion and Upregulation of a Plasma Membrane Proton-ATPase Strategy: Principles and Applications2021

    • Author(s)
      Ren Zirong、Suolang Bazhen、Fujiwara Tadashi、Yang Dan、Saijo Yusuke、Kinoshita Toshinori、Wang Yin
    • Journal Title

      Frontiers in Plant Science

      Volume: 12

    • DOI

      10.3389/fpls.2021.749337

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Humidity-induced aquaporin phosphorylation in leaf water defense against bacterial pathogens2023

    • Author(s)
      Shigetaka Yasuda, Taishi Hirase, Haruka Sumi and Yusuke Saijo
    • Organizer
      International Workshop on Plant Membrane Biology
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] リン枯渇環境におけるダメージ関連パターン受容体を介した植物免疫制御2023

    • Author(s)
      西條 雄介
    • Organizer
      第64回日本植物生理学会年会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 高湿度におけるアブシシン酸応答の不活化は病原細菌の水獲得を抑制する2023

    • Author(s)
      安田盛貴,平瀬大志,石崎遼,鈴木隆司,篠澤章久,上田栞子,四井いずみ,豊田正嗣,西條雄 介
    • Organizer
      第64回日本植物生理学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 植物の免疫制御因子を介したリン枯渇環境適応機構2022

    • Author(s)
      西條 雄介
    • Organizer
      植物の栄養研究会第7回
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Recognition of microbe/damage-associated molecular patterns by LRR pattern recognition receptor kinases confer salt tolerance in plants2022

    • Author(s)
      Yusuke Saijo
    • Organizer
      What’s New in MPMI with Yusuke Saijo (Webinar)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 高湿度環境におけるアブ シシン酸の不活性化を介 した細菌抵抗性の解析2022

    • Author(s)
      安田 盛貴,平瀬 大志,石崎 遼,鈴木 隆司,篠澤 章久, 四井 いずみ,豊田 正嗣,西 條 雄介
    • Organizer
      日本植物学会第86回大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 湿度情報に基づく細胞膜アクアポリンリン酸化制御機構の 解析2022

    • Author(s)
      角 春佳,倉田 理恵,安田 盛貴,西條 雄介
    • Organizer
      日本植物学会第86回大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Signal integration between phosphate starvation response and plant immunity2022

    • Author(s)
      Yusuke Saijo
    • Organizer
      日本植物学会第86回大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Remarks] 奈良先端科学技術大学院大学バイオサイエンス領域植物免疫学研究室 業績

    • URL

      https://bsw3.naist.jp/saijo/publication.html

    • Related Report
      2021 Annual Research Report

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

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