Attempt to produce

• Project/Area Number: 18K19198
• Research Category: Grant-in-Aid for Challenging Research (Exploratory)
• Allocation Type: Multi-year Fund
• Review Section: Medium-sized Section 39:Agricultural and environmental biology and related fields
• Research Institution: Tohoku University
• Principal Investigator: Kyozuka Junko 東北大学, 生命科学研究科, 教授 (90273838)
• Project Period (FY): 2018-06-29 – 2021-03-31
• Project Status: Completed (Fiscal Year 2020)
• Budget Amount: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000); Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000); Fiscal Year 2018: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: イネ / 冷害 / 植物特異的CDKインヒビター / EL2 / ABA / 細胞周期抑制因子 / 種子稔性 / 低温 / 花粉稔性 / 稔性 / 植物特異的細胞周期抑制因子 / EL2とEL2-like / ストレス耐性

Outline of Final Research Achievements

Overcoming damage from cold whether has been an important issue, and various efforts have been made so far. Although basic research has been conducted to elucidate the mechanism of chilling injury, the knowledge is fragmentary and has not yet been used as a theoretical basis for overcoming chilling injury. In this study, we focused on the plant-specific cyclin-dependent kinase (CDK) repressors EL2 and EL2-LIKE, which suppress the cell cycle, and examined the possibility that these genes are involved in the reduction of fertility at cold wheather. We found that these genes are strongly expressed in organs where cell division is suppressed, and induced by ABA, which is related to torelace to environmetal storesses. We also found that he lass of function of these genes causes low fertility at cold whether.

Academic Significance and Societal Importance of the Research Achievements

地球規模の気候変動は今後も繰り返されることが予想されており、深刻な冷害が起こる可能性が懸念される。本研究は、冷害に対して新たな切り口で取り組むものであり、芽生え期の研究ではあるが、将来性の高い挑戦的研究である。ここで得られる知見は、他のイネ科作物にも応用可能であり、また、冷害以外の不良環境にも応用できると期待される。

Research Products

• [Journal Article] Suppression of Leaf Blade Development by BLADE-ON-PETIOLE Orthologs Is a Common Strategy for Underground Rhizome Growth (2020)
  • Author(s): Toriba Taiyo、Tokunaga Hiroki、Nagasawa Kazuma、Nie Fanyu、Yoshida Akiko、Kyozuka Junko
  • Journal Title: Current Biology Volume: 30 Issue: 3 Pages: 509-516.e3
  • DOI: 10.1016/j.cub.2019.11.055
  • Peer Reviewed
• [Journal Article] The origin and evolution of the ALOG proteins, members of a plant-specific transcription factor family, in land plants (2020)
  • Author(s): Naramoto Satoshi、Hata Yuki、Kyozuka Junko
  • Journal Title: Journal of Plant Research Volume: 133 Issue: 3 Pages: 323-329
  • DOI: 10.1007/s10265-020-01171-6
  • NAID: 40022231058
  • Peer Reviewed
• [Journal Article] BLADE-ON-PETIOLE genes are not involved in the transition from protonema to gametophore in the moss Physcomitrella patens (2019)
  • Author(s): Hata Yuki、Naramoto Satoshi、Kyozuka Junko
  • Journal Title: Journal of Plant Research Volume: 132 Issue: 5 Pages: 617-627
  • DOI: 10.1007/s10265-019-01132-8
  • NAID: 40022011601
  • Peer Reviewed
• [Journal Article] A conserved regulatory mechanism mediates the convergent evolution of plant shoot lateral organs. (2019)
  • Author(s): Naramoto S, Jones VAS, Nicola, N, Sato M,Toyooka K, Shimamura M, Ishida S, Nishitani K,Ishizaki K, Nishihama R, Kohchi T, Dolan L, Kyozuka J.
  • Journal Title: PLoS Biology Volume: 17 Issue: 12 Pages: 12-12
  • DOI: 10.1371/journal.pbio.3000560
  • NAID: 120006813343
  • Peer Reviewed / Open Access / Int'l Joint Research