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Evaluation of the effects of light environment on plant responses to stressors through changes in water use strategies and its application to environmental control in horticultural production.

Research Project

Project/Area Number 21H02322
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 41040:Agricultural environmental engineering and agricultural information engineering-related
Research InstitutionOsaka Metropolitan University (2022-2023)
Osaka Prefecture University (2021)

Principal Investigator

Shibuya Toshio  大阪公立大学, 大学院農学研究科, 教授 (50316014)

Co-Investigator(Kenkyū-buntansha) 遠藤 良輔  大阪公立大学, 大学院農学研究科, 講師 (10409146)
松田 怜  東京大学, 大学院農学生命科学研究科(農学部), 准教授 (20547228)
地子 智浩  一般財団法人電力中央研究所, グリッドイノベーション研究本部, 主任研究員 (60816479)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2023: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2022: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2021: ¥12,480,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥2,880,000)
Keywords通水コンダクタンス / 環境制御 / ストレス応答 / ガス交換 / フィトクロム / 光質 / 環境制御チャンバー / 環境制御チャンバ
Outline of Research at the Start

グロースチャンバーで観察された植物のストレス影響がフィールドに当てはまらないことはよく知られている.本研究では,蛍光灯や白色LEDなどの遠赤色域を含まない照射光下では,太陽光のように遠赤色域を含む照射光下に比べて,葉内の通水コンダクタンスが高まることがストレス影響の差異をもたらすと考え,光環境とストレス要因が植物の生育に及ぼす複合影響を,植物の水利用戦略の視点から明らかにする.

Outline of Final Research Achievements

We evaluated leaf hydraulic conductance (Kleaf) of cucumber seedlings acclimatized to light with different proportions of FR. Kleaf tended to increase with decreasing FR light. Kleaf and leaf vein length density were significantly positively correlated, indicating that increased Kleaf caused by low FR light may have been caused by changes in leaf vein structure. To clarify whether acclimatization to low-FR light improved tolerance to high evaporative demand, we evaluated changes in gs and photosynthesis when seedlings that had been acclimatized to different proportions of FR light were transferred to a high vapor-pressure deficit (VPD) condition. After transfer to high VPD, gs and leaf water potential of the seedlings decreased in all treatment groups, but the decrease was smaller in the low FR seedlings. After transfer to high VPD, the quantum yield of photosystem II decreased significantly in the high FR seedlings, but not in the low FR seedlings.

Academic Significance and Societal Importance of the Research Achievements

チャンバーとフィールドでのストレス影響の違いついての研究は,光強度に注目したものが多いが,それに対し本研究では,光質(遠赤色光)に着目し,植物の水利用戦略の可塑性からその可能性を示した点は学術的に価値が高い.葉内の通水コンダクタンスに及ぼす光質の影響は,植物生産科学分野においても報告されており,生産性の制限因子としてその重要性が指摘されているが,水利用戦略の変化を介してストレス制御を行った事例はみあたらない.遠赤色光によって通水コンダクタンスを高めることによって高飽差におけるストレスを緩和できたことは,人工光源を用いたハードニング技術として植物ストレス制御の新しい展開をもたらすものである.

Report

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

    (18 results)

All 2024 2023 2022 2021

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (13 results) (of which Int'l Joint Research: 4 results,  Invited: 2 results) Book (1 results)

  • [Journal Article] Effects of end-of-day far-red light and relative humidity on flowering and stem elongation of petunia (Petunia × hybrida) seedlings2024

    • Author(s)
      Shibuya, T., Izumi, M., Endo, R.
    • Journal Title

      Scientia Horticulturae

      Volume: 324 Pages: 112600-112600

    • DOI

      10.1016/j.scienta.2023.112600

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cucumber leaf necrosis caused by abrupt change to light with a high far-red component2023

    • Author(s)
      Shibuya, T., Kataoka, C., Nishio, K., Endo, R., Kitaya, Y., Shinto, Y., Mishiba, KI., Iwata, Y.
    • Journal Title

      Biologia Plantarum

      Volume: 67 Pages: 28-35

    • DOI

      10.32615/bp.2022.039

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Far-red light interacts with salinity stress in Cucumis sativus seedlings partly through changes in photosynthate allocation2023

    • Author(s)
      Shibuya, T., Nagata, A., Endo, R.
    • Journal Title

      Plant Growth Regulation

      Volume: 99 Issue: 1 Pages: 91-97

    • DOI

      10.1007/s10725-023-00978-2

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of far-red light and photoperiod during early growth stages on flower bud development of seed-propagated strawberry seedlings2023

    • Author(s)
      Tsuruyama J., Shibuya, T.
    • Journal Title

      Scientia Horticulturae

      Volume: 317 Pages: 112051-112051

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Presentation] 植物の成長戦略と光環境制御2024

    • Author(s)
      渋谷俊夫
    • Organizer
      日本農業気象学会2024年全国大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 遠赤色光および相対湿度がキュウリ葉の光合成特性に及ぼす複合影響2024

    • Author(s)
      和田菜花,渋谷俊夫,遠藤良輔
    • Organizer
      日本農業気象学会2024年全国大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 明期PPFDの経日変化データを用いたキュウリ葉の光順化応答の推定2024

    • Author(s)
      于 立堯・富士原和宏・松田 怜
    • Organizer
      日本農業気象学会2024年全国大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Leaf hydraulic conductance of cucumber seedlings acclimatized to light with different promotions of far-red light2024

    • Author(s)
      Shibuya, T., Kajikawa, S., Endo, R.
    • Organizer
      X International Symposium on Light in Horticulture
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effects of the sudden increase in far red light on extension growth of cucumber seedlings2024

    • Author(s)
      Takayama, K., Shibuya, T., Endo, R.
    • Organizer
      X International Symposium on Light in Horticulture
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Interaction between far-red light and humidity on gas exchange characteristics of cucumber leaves2024

    • Author(s)
      Wada, N., Shibuya, T., Endo, R.
    • Organizer
      X International Symposium on Light in Horticulture
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 変動する風速下におけるキュウリ実生の成長特性2023

    • Author(s)
      前田悠貴,渋谷俊夫,遠藤良輔
    • Organizer
      日本農業気象学会2023年全国大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 照射光に含まれる遠赤色光の割合の増加がキュウリ実生の胚軸伸長に及ぼす影響2023

    • Author(s)
      高山果鈴,渋谷俊夫,遠藤良輔
    • Organizer
      日本農業気象学会2023年全国大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 植物生産における光環境応答とトレードオフ2023

    • Author(s)
      渋谷俊夫
    • Organizer
      第70回日本生態学会大会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 強風による植物へのストレス影響は遠赤色光と複合的に作用する2022

    • Author(s)
      渋谷俊夫, 神藤慶紀, 遠藤良輔, 北宅善昭
    • Organizer
      日本農業気象学会2022年全国大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 照射光に含まれる遠赤色光の割合の急な増加がもたらすキュウリ子葉の可視障害2022

    • Author(s)
      西尾奏栄,渋谷俊夫,遠藤良輔
    • Organizer
      日本農業気象学会2022年全国大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 遠赤色光の割合が異なる照射光に順化したキュウリ葉の通水コンダクタンス2022

    • Author(s)
      鍜冶川紗奈,渋谷俊夫,遠藤良輔
    • Organizer
      日本農業気象学会2022年全国大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Interaction between far-red light and salinity on early growth of cucumber seedlings2021

    • Author(s)
      Shibuya T., Nagata, A., Endo, R., Kitaya, Y.
    • Organizer
      IX International Symposium on Light in Horticulture
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Book] 施設園芸学-植物環境工学入門-( 担当:形態形成,環境応答)2022

    • Author(s)
      後藤英司,富士原和宏,松田 怜,渋谷俊夫,彦坂晶子,小峰正史,石神靖弘,高山弘太郎, 荊木康臣,安武大輔,嶋津光鑑,深山陽子,星 岳彦,藤内直道
    • Total Pages
      188
    • Publisher
      朝倉書店
    • ISBN
      9784254410433
    • Related Report
      2022 Annual Research Report

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

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