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Diversity and genetic factors in rice photosynthetic induction by time series parallel analysis

Research Project

Project/Area Number 21K19104
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 39:Agricultural and environmental biology and related fields
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

Adachi Shunsuke  東京農工大学, (連合)農学研究科(研究院), 准教授 (30717103)

Co-Investigator(Kenkyū-buntansha) 田中 佑  岡山大学, 環境生命自然科学学域, 准教授 (50634474)
Project Period (FY) 2021-07-09 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2023: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2022: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2021: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords光合成誘導 / ゲノムワイド関連解析 / 気孔伝導度 / 炭酸固定 / 変動光 / 自然変異 / イネ / GWAS / カルボキシル化速度 / 電子伝達速度 / 愛国もち / 気孔コンダクタンス / 品種パネル
Outline of Research at the Start

急激な太陽光強度の上昇に対して植物の光合成速度の変化は緩やかであり、光合成速度の上昇 (光合成誘導) にかかる時間が長いほど太陽エネルギーを損失する。したがって光合成誘導時間をいかに短縮するかが作物生産量増加の鍵である。本研究は、光合成誘導の研究分野では世界的に類を見ない規模で、166のイネ大規模品種群を利用して光合成誘導の品種間差とその生理学的要因を明らかにする 。さらにゲノムワイド関連解析によって原因となるゲノム領域を推定するとともに、突然変異体を用いた詳細解析によって遺伝子機能に迫ることを目的とする。

Outline of Final Research Achievements

We evaluated the diversity of photosynthetic responses (photosynthetic induction) of 166 Japanese rice cultivars after stepwise irradiation increase. We found that Aikoku Mochi, a native variety, showed remarkably rapid photosynthetic induction. This was attributed to a rapid increase in photosynthetic activity in the leaves immediately after high light irradiation and a rapid increase in stomatal conductivity. The rapid photosynthetic induction of Aikoku Mochi showed increased growth under fluctuating light condition relative to constant light condition. Genome-wide association study revealed genomic regions on chromosomes 3 and 5 involved in the rapid induction of photosynthesis. Identification of the causal gene is expected to elucidate the regulatory mechanism of photosynthesis induction in plants.

Academic Significance and Societal Importance of the Research Achievements

光に対する光合成の応答性を高めることは、光エネルギーを無駄なく利用し、作物の生産性を高めることに貢献する。本研究で我々は、在来品種である愛国もちが日本のイネ品種の中で突出して迅速な光応答性を高めることを発見し、その生理・遺伝メカニズムの一端を明らかにした。また野外のような変動する光環境では、他の品種にくらべて植物の成長性にも優れることを見出した。愛国もちは、イネ品種の物質生産性の改良のための育種素材として役立つと期待される。

Report

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

    (9 results)

All 2023 2022

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (4 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Journal Article] Development of a Simple and Rapid Measurement System for Determining CO<sub>2</sub> Assimilation Rate in Plant Leaves2023

    • Author(s)
      HONDA Sotaro、OHKUBO Satoshi、ARAIE Toshitake、AKIYAMA Shigeyuki、AOKI Naofumi、TANAKA Yu、ADACHI Shunsuke
    • Journal Title

      Japanese Journal of Crop Science

      Volume: 92 Issue: 4 Pages: 289-299

    • DOI

      10.1626/jcs.92.289

    • ISSN
      0011-1848, 1349-0990
    • Year and Date
      2023-10-05
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Genome-wide association study of leaf photosynthesis using a high-throughput gas exchange system in rice2023

    • Author(s)
      Honda Sotaro、Imamura Ayumu、Seki Yoshiaki、Chigira Koki、Iwasa Marina、Hayami Kentaro、Nomura Tomohiro、Ohkubo Satoshi、Ookawa Taiichiro、Nagano Atsushi J.、Matsuoka Makoto、Tanaka Yu、Adachi Shunsuke
    • Journal Title

      Photosynthesis Research

      Volume: 159 Issue: 1 Pages: 17-28

    • DOI

      10.1007/s11120-023-01065-3

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The Evolution of C4 Photosynthesis in Flaveria (Asteraceae): Insights from the Flaveria linearis Complex2022

    • Author(s)
      Adachi Shunsuke、Stata Matt、Martin Duncan G、Cheng Shifeng、Liu Hongbing、Zhu Xin-Guang、Sage Rowan F
    • Journal Title

      Plant Physiology

      Volume: 191 Issue: 1 Pages: 233-251

    • DOI

      10.1093/plphys/kiac467

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Anisohydric characteristics of a rice genotype ‘ <scp>ARC</scp> 11094’ contribute to increased photosynthetic carbon fixation in response to high light2022

    • Author(s)
      Taniyoshi Kazuki、Tanaka Yu、Adachi Shunsuke、Shiraiwa Tatsuhiko
    • Journal Title

      Physiologia Plantarum

      Volume: 174 Issue: 6

    • DOI

      10.1111/ppl.13825

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Towards improved dynamic photosynthesis in C3 crops by utilising natural genetic variation2022

    • Author(s)
      Sakoda Kazuma、Adachi Shunsuke、Yamori Wataru、Tanaka Yu
    • Journal Title

      Journal of Experimental Botany

      Volume: not determined Issue: 10 Pages: 3109-3121

    • DOI

      10.1093/jxb/erac100

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] Genome-Wide Association Study of Leaf Photosynthetic Rate in Rice Using a High Throughput Gas Exchange System2023

    • Author(s)
      Sotaro Honda, Ayumu Imamura, Yoshiaki Seki et al.
    • Organizer
      6th International Rice Congress
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Photosynthesis prediction by field transcriptome2023

    • Author(s)
      Shunsuke Adachi
    • Organizer
      aiwan-Japan Plant Biology 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 日本の水稲166品種を用いた光合成誘導反応の変異解析2022

    • Author(s)
      谷吉和貴・関佳彬・平松将真・田牧陸男・浅木直美・松岡信・田中佑・安達俊輔
    • Organizer
      日本作物学会第233回講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 日本の水稲品種における光合成誘導反応の変異をもたらす生理的要因の解析2022

    • Author(s)
      谷吉和貴・宮本愛梨・浅木直美・松岡信・田中佑・安達俊輔
    • Organizer
      日本作物学会第233回講演会
    • Related Report
      2021 Research-status Report

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Published: 2021-07-13   Modified: 2025-01-30  

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