Responses of gene expressions in rice plants to micro-meteorological conditions; their physiological role in absorption of water and nutrients from roots
| Project/Area Number |
17H03896
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Agricultural environmental engineering/Agricultural information engineering
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| Research Institution | National Agriculture and Food Research Organization |
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Principal Investigator |
KUWAGATA Tsuneo 国立研究開発法人農業・食品産業技術総合研究機構, 農業環境変動研究センター, ユニット長 (90195602)
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| Co-Investigator(Kenkyū-buntansha) |
近藤 始彦 名古屋大学, 生命農学研究科, 教授 (00355538)
伊川 浩樹 国立研究開発法人農業・食品産業技術総合研究機構, 農業環境変動研究センター, 主任研究員 (10754393)
杉浦 大輔 名古屋大学, 生命農学研究科, 助教 (50713913)
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2019: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2018: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2017: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
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| Keywords | アクアポリン / イネ / 環境応答 / 群落微気象 / 蒸散 / 植物生理 / トランスクリプトーム / 農業生産環境 |
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| Outline of Final Research Achievements |
We experimentally investigated how micro-meteorological conditions influence expression levels of the functional genes which contribute to absorption of water and nutrients by the rice crops, and examined the physiological roles of the environmental responses of these genes to the growth of rice. The experimental results indicated that the expression levels of many kinds of aquaporin genes both in roots and leaves increased with the transpirational demand during the all growth stages, and that expression level of about half of all genes in the rice leaves had a positive (or negative) correlation with transpiration in the early ripening period. Finally, we demonstrated that the environmental response of functional genes to day-to-day variation in micro-meteorological conditions could play important roles in several eco-physiological processes, such as physiological response of roots to decrease in soil water content and change in water use efficiency with atmospheric CO2 concentration.
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| Academic Significance and Societal Importance of the Research Achievements |
植物の生育は多数の遺伝子によって調整されているが、植物が生育する野外では、光環境や気温・湿度、地温などの複数の環境がさまざまな時間スケールで複雑に変化する。野外で生育してるイネを対象として、水や養分の輸送を担う各種遺伝子の状態と生育状態の変化を調べたところ、イネは日々の蒸散要求量や土壌水分などの微気象環境の変化に応じて、それら遺伝子の発現量をダイナミックに変化させ、自らの水輸送や養分吸収、光合成などの機能を柔軟に調節している可能性が示された。これは植物の生存戦略において重要な調節機能であり、気候変動下における作物の安定生産技術を構築する上で役立つ基礎的な知見である。
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Report
(4 results)
Research Products
(26 results)
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[Journal Article] High mesophyll conductance in the high-yielding rice cultivar Takanari quantified with the combined gas exchange and chlorophyll fluorescence measurements under free-air CO2 enrichment2019
Author(s)
Ikawa, H., Sakai, H., Chen, C.P., Soong, T.H., Yonemura, S., Taniguchi, Y.,Yoshimoto, M., Tokida, T., Zhang, G., Kuwagata, T., Nakamura, H., Avenson,T., and Hasegawa, T.
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Journal Title
Plant Production Science
Volume: 22
Issue: 3
Pages: 395-406
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Increasing canopy photosynthesis in rice can be achieved without a large increase in water use-a model based on free-air CO2 enrichment2018
Author(s)
Ikawa, H., Chen, C.P., Sikma, M., Yoshimoto, M., Sakai, H., Tokida, T., Usui, Y., Nakamura, H., Ono, K., Maruyama, M., Watanabe, T., Kuwagata, T., and Hasegawa, T.
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Journal Title
Global Change Biology
Volume: 24
Issue: 3
Pages: 1321-1341
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] Characteristics of local climate in rice paddy area of Japan2019
Author(s)
Tsuneo Kuwagata, Yasushi Ishigooka Shigenori Haginoya Hiroki Ikawa, Keisuke Ono, Mayumi Yoshimoto, Minehiko Fukuoka, Motoki Nishimori, Toshihiro Hasegawa, Yasuhiro Usui, and Akira Miyata
Organizer
AgMIP-East Asia and Climate Smart Agriculture Symposium & The 6th Symposium on the Development and Application of Agricultural System Models in China
Related Report
Int'l Joint Research
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[Presentation] Mining physiological and phenological traits to increase water use efficiency of a high-yielding rice cultivar using a crop growth model2019
Author(s)
Hiroki Ikawa, Keisuke Ono, Akira Miyata, Yasushi Ishigooka, Tsuneo Kuwagata, Tsutomu Watanabe, Motoki Nishimori, Hidemitsu Sakai, Charles P. Chen, Mayumi Yoshimoto, Takeshi Tokida, Hirofumi Nakamura, Hitomi Wakatsuki, and Toshihiro Hasegawa
Organizer
gMIP-East Asia and Climate Smart Agriculture Symposium & The 6th Symposium on the Development and Application of Agricultural System Models in China
Related Report
Int'l Joint Research
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