Regulatory mechanisms on phenotypic plasticity of rice root system architecture induced by cell wall dynamics
| Project/Area Number |
18H02174
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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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| Review Section |
Basic Section 39010:Science in plant genetics and breeding-related
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| Research Institution | Nagoya University |
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Principal Investigator |
Inukai Yoshiaki 名古屋大学, 農学国際教育研究センター, 教授 (20377790)
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| Co-Investigator(Kenkyū-buntansha) |
兒島 孝明 名古屋大学, 生命農学研究科, 講師 (40509080)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2021)
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| Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2020: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2018: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
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| Keywords | イネ / 突然変異体 / 側根形成 / オーキシン / 細胞壁 / 分子機構 / 根系形成 |
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| Outline of Final Research Achievements |
Since the lateral root primordium size is a major factor that determines the root system morphology and regulates the water absorption capacity under drought stress, it is extremely important for stable rice production under a poor environment to elucidate the control mechanism of the lateral root primordium size. Here, we tried to characterize some rice mutants that produce big size of lateral root primordia and isolate and analyze each mutant’s causative gene. As a result, it was clarified that changes in cell wall extensibility and auxin localization are involved in the control of lateral primordium size.
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| Academic Significance and Societal Importance of the Research Achievements |
近年、世界的な干ばつが頻発する中、根系改良による耐乾性育種が注目されている。本研究の成果から、イネの根系形態を可塑的に変化させる能力を強化し、乾燥ストレス耐性に優れる品種を作出する上での有用な手がかりが得られた。
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Report
(4 results)
Research Products
(24 results)
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[Journal Article] Auxin distribution in lateral root primordium development affects its size and lateral root diameter in rice2022
Author(s)
2)Kawai, T., Akahoshi, R., Shelley, I. J., Kojima, T., Sato, M., Tsuji, H. and Inukai, Y.
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Journal Title
Frontiers in Plant Science
Volume: 13
Pages: 834378-834378
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Mutation of OUR1/OsbZIP1, which encodes a member of the basic leucine zipper transcription factor family, promotes root development in rice through repressing auxin signaling.2021
Author(s)
6)Hasegawa, T., Lucob-Agustin, N., Yasufuku, K., Kojima, T., Nishiuchi, S., Ogawa, A., Takahashi-Nosaka, M., Kano-Nakata, M., Inari-Ikeda, M., Sato, M., Tsuji, H., Wainaina, C. M., Yamauchi, A. and Inukai, Y.
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Journal Title
Plant Science
Volume: 306
Pages: 110861-110861
DOI
NAID
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] The promoted lateral root 1 (plr1) mutation is involved in reduced basal shoot starch accumulation and increased root sugars for enhanced lateral root growth in rice2020
Author(s)
8)Lucob-Agustin, N., Sugiura, D., Kano-Nakata, M., Hasegawa, T., Suralta, R. R. Niones, J. M., Inari-Ikeda, M., Yamauchi, A. and Inukai, Y.
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Journal Title
Plant Science
Volume: 301
Pages: 110667-110667
DOI
NAID
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] Development and genetic analysis of compensatory growth of lateral roots in rice2021
Author(s)
Kawai, T., Nosaka-Takahashi, M., Sato, Y., Chen, Y., Siddique, K. H. M., Takahashi, H., Nakazono, M., Yamauchi, A., Inukai, Y.
Organizer
10th Asian Crop Science Association Conference
Related Report
Int'l Joint Research
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[Presentation] イネにおけるオーキシン局在に応 答した側根原基形成機構2021
Author(s)
赤星 良輔, 河合 翼, 井成 ( 池 田) 真由子, 佐藤 萌子, 辻 寛之, 高橋 ( 野坂 ) 美鈴, 高橋 宏和, 佐藤 豊, 中園 幹生, 山内 章, 犬飼義明
Organizer
日本育種学会第139回講演会
Related Report
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