Studies on gibberellin-dependent light-induced seed germination

2010 Fiscal Year Final Research Report

• Project/Area Number: 20570049
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Plant molecular biology/Plant physiology
• Research Institution: The Institute of Physical and Chemical Research
• Principal Investigator: YAMAGUCHI Shinjiro The Institute of Physical and Chemical Research, 促進制御研究チーム, チームリーダー (10332298)
• Project Period (FY): 2008 – 2010
• Keywords: 種子発芽 / シロイヌナズナ / 植物ホルモン / ジベレリン / フィトクロム / 光シグナル / マイクロアレイ

Research Abstract

Germination of Arabidopsis seeds is regulated by light through the photoreceptor phytochrome. Previous studies have shown that PIL5, a phytochrome-interacting protein, plays a role in modulating the levels of plant hormones, such as gibberellin and abscisic acid, in imbibed seeds. To better understand the molecular mechanisms for light-dependent seed germination, we have identified target genes of PIL5 and characterized new gibberellin-related genes.

Research Products

• [Journal Article] SCARECROW-LIKE3 promotes gibberellin signaling by antagonizing DELLA in Arabidopsis. (2011)
  • Author(s): Zhang ZL, Ogawa M, Fleet CM, Zentella R, Hu J, Heo JO, Lim J, Kamiya Y, Yamaguchi S, Sun TP
  • Journal Title: Proc Natl Acad Sci USA. 108 Pages: 2160-2165
  • Peer Reviewed
• [Journal Article] Genome-wide analysis of genes targeted by PHYTOCHROME INTERACTING FACTOR 3-LIKE 5 during seed germination in Arabidopsis. (2009)
  • Author(s): Oh E, Kang H, Yamaguchi S, Lim S, Park J, Lee D, Kamiya Y, Choi G
  • Journal Title: Plant Cell 21 Pages: 403-419
  • Peer Reviewed
• [Presentation] gsd1-1d (gibberellin sensitive dwarf1-1d) is a novel mutation that affects gibberellin metabolism (2008)
  • Author(s): Ayele B
  • Organizer: 19th International Conference on Arabidopsis Research
  • Place of Presentation: モントリオール(カナダ)
  • Year and Date: 2008-07-25
• [Book] 新しい植物ホルモンの科学(第2版) (2010)
  • Author(s): 山口信次郎・山根久和
  • Total Pages: 53-71
  • Publisher: 講談社
• [Book] Comprehensive Natural Products II Chemistry and Biology (vol.4, Plant Hormones) (2010)
  • Author(s): Yamaguchi I, Cohen JD, Yamaguchi S, Nakajima M, Sakakibara H, Kuroha T, Hirai N, Yokota T, Ohta H, Kobayashi Y, Mori H, Sakagami Y
  • Total Pages: 9-125
  • Publisher: Elsevier
• [Book] 発芽生物学(種生物学会 編) (2009)
  • Author(s): 山口信次郎
  • Total Pages: 235-243
  • Publisher: 文一総合出版