Understanding of molecular mechanisms regulating lateral root formation for drought stress avoidance in rice

• Project/Area Number: 24380007
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Breeding science
• Research Institution: Nagoya University
• Principal Investigator: INUKAI Yoshiaki 名古屋大学, 学内共同利用施設等, 准教授 (20377790)
• Co-Investigator(Kenkyū-buntansha): KOJIMA Takaaki 名古屋大学, 生命農学研究科, 助教 (40509080)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000); Fiscal Year 2014: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000); Fiscal Year 2013: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2012: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
• Keywords: 発生・分化 / シグナル伝達 / イネ / 根 / 突然変異体 / 植物 / メリステム / オーキシン / 遺伝子

Outline of Final Research Achievements

In order to increase the ability of drought stress avoidance in rice, it is important to promote lateral root formation. In this study, we tried to understand the molecular mechanisms regulating its formation. Finally, we identified several genes that regulates lateral root formation. These genes were expected to contribute drought stress avoidance in rice.

Research Products

• [Journal Article] QTL associated with lateral root plasticity in response to soil moisture fluctuation stress in rice (2015)
  • Author(s): Jonathan M. Niones, Yoshiaki Inukai, Roel R. Suralta and Akira Yamauchi
  • Journal Title: Plant and Soil Volume: in press Issue: 1-2 Pages: 63-75
  • DOI: 10.1007/s11104-015-2404-x
  • Peer Reviewed / Open Access
• [Journal Article] Nitrogen application enhanced the expression of developmental plasticity of root systems triggered by mild drought stress in rice. (2014)
  • Author(s): Tran, Thiem, Thi., Kano-Nakata, Mana., Takeda, Moe., Menge, Daniel., Mitsuya, Shiro., Inukai, Yoshiaki. and Yamauchi, Akira.
  • Journal Title: Plant and Soil. Volume: 378 Issue: 1-2 Pages: 139-152
  • DOI: 10.1007/s11104-013-2013-5
  • Peer Reviewed
• [Journal Article] SLLl, which encodes a member of the stearoyl-acyl carrier protein fatty acid desaturase family, is involved in cell elongation in lateral roots via regulation of fatty acid content in rice (2013)
  • Author(s): Shelley, I. J., S. Nishiuchi, K. Shibata, Y. Inukai
  • Journal Title: Plant Sci. Volume: 207 Pages: 12-17
  • DOI: 10.1016/j.plantsci.2013.01.003
  • Peer Reviewed
• [Journal Article] Field evaluation on functional roles of root plastic responses on dry matter production and grain yield of rice under cycles of transient soil moisture stresses using chromosome segment substitution lines (2012)
  • Author(s): Niones, J. M., R. R. Suralta, Y. Inukai and A. Yamauchi
  • Journal Title: Plant Soil Volume: 359 Pages: 107-120
  • Peer Reviewed
• [Presentation] Developmental and functional responses of rice root system to soil water conditions (2015)
  • Author(s): Yoshiaki Inukai, Misuzu Takahashi-Nosaka, Shunsaku Nishiuchi, Mana Kano-Nakata, Emi Kameoka, Akihide Shibata, Jonathan M. Niones, Roel R. Suralta and Akira Yamauchi
  • Organizer: 第56回日本植物生理学会年会
  • Place of Presentation: 東京農業大学
  • Year and Date: 2015-03-16 – 2015-03-18
  • Invited
• [Presentation] イネにおける根の皮層細胞層数の制御機構 (2014)
  • Author(s): 田﨑 三香子,樅木 雄亮,佐藤(永澤)奈美子,木富 悠花,高橋(野坂)実鈴,桧原 健一郎,長戸 康郎,北野 英己,犬飼 義明
  • Organizer: 第126回日本育種学会講演会
  • Place of Presentation: 南九州大学
  • Year and Date: 2014-09-26 – 2014-09-27
• [Presentation] イネの根端分裂組織の維持に関わるrrl3突然変異体の解析 (2014)
  • Author(s): Shelley Israt Jahan, 渡辺 紗哉華, 永澤 信洋, 小川 敦史, 北野 英己, 犬飼 義明
  • Organizer: 第126回日本育種学会講演会
  • Place of Presentation: 南九州大学
  • Year and Date: 2014-09-26 – 2014-09-27
• [Presentation] イネQHBタンパク質の相互作用および下流制御因子の探索 (2014)
  • Author(s): 柴田晃秀、柴田恭佑、西内俊策、稲橋宏樹、犬飼義明
  • Organizer: 第126回日本育種学会講演会
  • Place of Presentation: 南九州大学
  • Year and Date: 2014-09-26 – 2014-09-27
• [Presentation] Molecular mechanisms of root elongation growth in rice (2013)
  • Author(s): Y. Inukai
  • Organizer: Japan-China joint symposium on rice develop mental biology ～From morphogenesis to yield～
  • Place of Presentation: 大分県別府市(招待講演)
  • Year and Date: 2013-03-08
• [Presentation] イネ幼根形成に異常を示すradicleless変異体の解析 (2013)
  • Author(s): 木富悠花・犬飼義明・桧原健一郎・長戸康郎・伊藤純一
  • Organizer: 第52回ガンマフィールドシンポジウム
  • Place of Presentation: 水戸市
• [Presentation] 突然変異体を利用したイネの根系形態改良の試み (2013)
  • Author(s): 稲橋宏樹・木富悠花・北野英己・犬飼義明
  • Organizer: 第52回ガンマフィールドシンポジウム
  • Place of Presentation: 水戸市
  • Invited
• [Presentation] OsPIN2遺伝子によるイネの側根形成制御機構 (2013)
  • Author(s): 稲橋宏樹・山内卓樹・小川敦史・犬飼義明
  • Organizer: 日本育種学会第124回講演会
  • Place of Presentation: 鹿児島大学
• [Presentation] Key root traits and useful genes on rainfed lowland rice breeding for water stress avoidance (2012)
  • Author(s): Y Inukai, Y. Kitomi, H. Inahashi, M. Nakata-Kano, J. Niones, R. Suralta and A. Yamauchi
  • Organizer: 8th symposium of the International Society of Root Research
  • Place of Presentation: Dundee, Scotland
  • Year and Date: 2012-06-26
• [Remarks]
  • URL: http://www.agr.nagoya-u.ac.jp/%7eikusyu/content.html#inukai