Molecular basis of crosstalk between flowering and environmental stress signaling pathway and application for plant breeding.

• Project/Area Number: 21780001
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Breeding science
• Research Institution: Iwate University
• Principal Investigator: YOKOI Shuji Iwate University, 農学部, 准教授 (80346311)
• Project Period (FY): 2009 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2009: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
• Keywords: 育種学 / 遺伝学 / 植物 / ストレス / シグナル伝達

Research Abstract

We indicated that GI mediates the sodium stress response via induction in gene expression of stress-related genes as a result of circadian clock regulation. We also found that GI suppresses the newly identified stress-induced-flowering pathway.

Research Products

• [Journal Article] Phytochrome B regulates Heading date 1 (Hd1)-mediated expression of rice florigen Hd3a and critical day length in rice. (2011)
  • Author(s): Ishikawa R, Aoki M, Kurotani K-I, Yokoi S, Shinomura T, Takano M, Shimamoto K
  • Journal Title: Molecular Genetic and Genomics (in press : on line first)
  • Peer Reviewed
• [Journal Article] Phytochrome B regulates Heading date 1 (Hd1)-mediated expression of rice florigen Hd3a and critical day length in rice. (2011)
  • Author(s): Ishikawa R, Aoki M, Kurotani K-I, Yokoi S, Shinomura T, Takano M, Shimamoto K
  • Journal Title: Molecular Genetic and Genomics Volume: (In press)
  • Peer Reviewed
• [Journal Article] A gene network for long day flowering activates RFT1 encoding a mobile flowering signal in rice. (2009)
  • Author(s): Komiya R, Yokoi S, Shimamoto K
  • Journal Title: Development 136 Pages: 3443-3450
  • Peer Reviewed
• [Journal Article] A gene network for long day flowering activates RFT1 encoding a mobile flowering signal in rice (2009)
  • Author(s): Komiya R, Yokoi S, Shimamoto K
  • Journal Title: Development 136 Pages: 3443-3450
  • Peer Reviewed
• [Presentation] Expression analysis of genes for flowering in a late bolting breeding material, "leafy green parental line No.2 (Brassica rapa)" that requires long days instead of vernalization for flowering. (2010)
  • Author(s): Kitamoto N, Yui S, Takahata Y, Yokoi S
  • Organizer: 17th Crucifer Genetics Workshop
  • Place of Presentation: Saskatoon, Canada
• [Presentation] Crosstalk between photoperiodic flowering and stress signaling mediated by GIGANTEA (GI) in Arabidopsis. (2010)
  • Author(s): Kubo T, Takahata Y, Yokoi S
  • Organizer: 21st International Conference on Arabidopsis Research
  • Place of Presentation: Yokohama, Japan
• [Presentation] 塩ストレス下におけるシロイヌナズナ開花関連遺伝子変異体の生理学的解析 (2010)
  • Author(s): 久保隆洋・河合成直・高畑義人・横井修司
  • Organizer: 第117回 日本育種学会
  • Place of Presentation: 京都大学
• [Presentation] Role of GIGANTEA gene in the regulation of salt stress signaling in Arabidopsis. (2009)
  • Author(s): Kubo T, Takahata Y, Yokoi S
  • Organizer: Plant Biology 2009, Hawaii Convention Center
  • Place of Presentation: Honolulu Hawaii USA
• [Presentation] Role of GIGANTEA gene in the regulation of salt stress signaling in Arabidopsis (2009)
  • Author(s): 横井修司, et al.
  • Organizer: Plant Biology 2009
  • Place of Presentation: Honolulu, Hawaii USA