Molecular mechanism of flowering in the short-day plant rice.

2012 Fiscal Year Final Research Report

• Project Area: Plant regulatory systems that control developmental interactions between meristems and lateral organs
• Project/Area Number: 19060013
• Research Category: Grant-in-Aid for Scientific Research on Priority Areas
• Allocation Type: Single-year Grants
• Review Section: Biological Sciences
• Research Institution: Nara Institute of Science and Technology
• Principal Investigator: SHIMAMOTO Ko 奈良先端科学技術大学院大学, バイオサイエンス研究科, 教授 (10263427)
• Co-Investigator(Kenkyū-buntansha): TERADA Rie 名城大学, 農学部, 教授 (30137799) ; OHKI Izuru 奈良先端科学技術大学院大学, バイオサイエンス研究科, 助教 (80418574)
• Co-Investigator(Renkei-kenkyūsha): TSUJI Hiroyuki 奈良先端科学技術大学院大学, バイオサイエンス研究科, 助教 (40437512)
• Project Period (FY): 2007 – 2012
• Keywords: 植物 / シグナル伝達 / 蛋白質 / 生理学 / イネ / フロリゲン

Research Abstract

Florigen is a mobile flowering signal produced in leaves and moves to the shoot apex. The molecular nature of florigen is revealed in 2007, as the protein product encoded by the Heading date 3a/FLOWERING LOCUS T genes in plants. Our molecular genetic analyses revealed the 14-3-3 proteins as the intracellular receptors of rice Hd3a florigen, and florigen activation complex, comprised of Hd3a, 14-3-3 and the transcription factor FD promotes flowering.

Research Products

• [Journal Article] 14-3-3 proteins act as intracellular receptors for rice Hd3a florigen (2011)
  • Author(s): Taoka, K., Ohki, I., Tsuji, H., Furuita, K., Hayashi, K., Yanase, T., Yamaguchi, M., Nakashima, C., Purwestri, Y.A., Tamaki, S., Ogaki, Y., Shimada, C., Nakagawa, A., Kojima, C. and Shimamoto, K
  • Journal Title: Nature Volume: 476 Pages: 332-335
• [Journal Article] Control of flowering and storage organ formation in potato by FLOWERING LOCUS T (2011)
  • Author(s): Navarro, C., Abelenda, JA., Cruz-Oro, E., Cuellar, CA., Tamaki, S., Silva, J., Shimamoto, K. and Prat, S
  • Journal Title: Nature Volume: 478 Pages: 119-122
• [Journal Article] Variations in Hd1 proteins, Hd3a promoters, and Ehd1 expression levels contribute to diversity of flowering time in cultivated rice (2009)
  • Author(s): Takahashi, Y., Teshima, K.M., Yokoi, S., Innan, H. and Shimamoto, K
  • Journal Title: Proc. Natl. Acad. Sci. USA Volume: 106 Pages: 4555-4560
• [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. and Shimamoto, K
  • Journal Title: Development Volume: 136 Pages: 3443-3450
• [Journal Article] The 14-3-3 protein GF14c acts as a negative regulator.of flowering in rice by interacting with the florigen Hd3a (2009)
  • Author(s): Purwestri, Y.A., Ogaki, Y., Tamaki, S., Tsuji, H. and Shimamoto, K
  • Journal Title: Plant Cell Physiol Volume: 50 Pages: 429-438
• [Journal Article] Hd3a and RFT1 are essential for flowering in rice (2008)
  • Author(s): Komiya, R., Ikegami, A., Tamaki, S., Yokoi, S. and Shimamoto, K
  • Journal Title: Development Volume: 135 Pages: 767-774
• [Journal Article] Hd3a protein is a mobile flowering signal in rice (2007)
  • Author(s): Tamaki, S., Matsuo, S., Wong, H.L., Yokoi, S. and Shimamoto, K
  • Journal Title: Science Volume: 316 Pages: 1033-1036
• [Presentation] Structure and function of florigen (2012)
  • Author(s): Shimamoto K
  • Organizer: 10^<th> International Congress on Plant Molecular Biology
  • Place of Presentation: Jeju, Korea
  • Year and Date: 2012-10-21
• [Presentation] 花を咲かせるホルモン、フロリゲン、科学技術への顕著な貢献 (2012)
  • Author(s): 島本功
  • Organizer: 2011受賞講演会
  • Place of Presentation: 文部科学省第2講堂 東京都
  • Year and Date: 2012-05-23
• [Presentation] 14-3-3 proteins act as intracellular receptors for rice Hd3a florigen (2011)
  • Author(s): Tsuji H
  • Organizer: International Asian Crop Science Association Conference
  • Place of Presentation: Bogor, Indonesia
  • Year and Date: 2011-09-30
• [Presentation] Structure and function of rice Hd3a florigen (2010)
  • Author(s): Shimamoto K
  • Organizer: 7^<th> Kristineberg Symposium
  • Place of Presentation: The Royal Swedish Academy of Sciences, Sweden
  • Year and Date: 2010-06-30
• [Presentation] Hd3a is a rice florigen (2007)
  • Author(s): Shimamoto K
  • Organizer: 5^<th Rice Functional Genomics
  • Place of Presentation: Tsukuba, Japan
  • Year and Date: 2007-10-15
• [Book] 花成ホルモン(フロリゲン)(農業技術大系) 2012年32巻 (2012)
  • Author(s): 辻寛之、島本功
  • Total Pages: 2-9
  • Publisher: 農文協
• [Book] 植物科学の挑戦(21世紀の分子生物学) (2011)
  • Author(s): 島本功
  • Total Pages: 231-243
  • Publisher: 東京化学同人
• [Remarks]
  • URL: http://bsw3.naist.jp/simamoto/simamoto.
• [Remarks]
  • URL: http://bsw3.naist.jp/simamoto/simamoto. Html
• [Patent(Industrial Property Rights)] フロリゲン活性化複合体及びその結晶 (2011)
  • Inventor(s): 島本功、辻寛之、田岡健一郎、児嶋長次郎、大木出
  • Industrial Property Rights Holder: 島本功、辻寛之、田岡健一郎、児嶋長次郎、大木出
  • Industrial Property Number: PCT出願、PCT/JP2011/56426
  • Filing Date: 2011-03-17
  • Overseas
• [Patent(Industrial Property Rights)] フロリゲン活性化複合体及びその結晶 (2011)
  • Inventor(s): 島本功、辻寛之、田岡健一郎、児嶋長次郎、大木出
  • Industrial Property Rights Holder: 島本功、辻寛之、田岡健一郎、児嶋長次郎、大木出
  • Industrial Property Number: 出願、特願 2010-61562
  • Filing Date: 2011-03-17