Physiological role of rice gibberellin inactivation pathway induced by rice blast infection.

• Project/Area Number: 23580067
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Plant pathology
• Research Institution: The Institute of Physical and Chemical Research
• Principal Investigator: MAGOME Hiroshi 独立行政法人理化学研究所, 環境資源科学研究センター, 研究員 (70425643)
• Project Period (FY): 2011 – 2013
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000); Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2011: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: ジベレリン / いもち病菌 / イネいもち病菌 / イネ

Research Abstract

Gibberellins (GAs) are a class of plant hormones that promote growth in various stages of plant lifecycle: seed germination, stem elongation, leaf expansion and flowering and fruit growth. Meanwhile, recent reports revealed that gibberellin signal is involved in disease response. In this study, to clarify the physiological role of upregulation of a rice gene, encoding a GA inactivation enzyme and decreased levels of bioactive GAs in rice blast infected leaves. Our results suggested that this phenomenon might be one of the defensive reactions in rice.

Research Products

• [Presentation] CYP714B1 and CYP714B2 encode gibberellin 13-oxidases that reduce gibberellin activity in rice (2013)
  • Author(s): Magome, H., Nomura, T., Hanada, A., Takeda-Kamiya, N., Ohnishi, T., Shinma, Y., Katsumata, T., Kawaide, H., Kamiya, Y., and Yamaguchi, S
  • Organizer: The international Plant Growth Substances Association 21th Conference
  • Place of Presentation: Shanghai, China
• [Presentation] CYP714B1 and CYP714B2 encode gibberellin 13-oxidases that reduce gibberellin activity in rice. (2013)
  • Author(s): Magome, H., Nomura, T., Hanada, A., Takeda-Kamiya, N., Ohnishi, T., Shinma, Y., Katsumata, T., Kawaide, H., Kamiya, Y., and Yamaguchi, S.
  • Organizer: The international Plant Growth Substances Association 21th Conference
  • Place of Presentation: Shanghai, China
• [Presentation] いもち病菌感染イネのジベレリン分析 (2012)
  • Author(s): 真籠洋、藤枝俊介、花田篤志、大里修一、神谷勇治、山口信次郎
  • Organizer: 日本植物病理学会大会
  • Place of Presentation: 福岡国際会議場
  • Year and Date: 2012-03-28
• [Presentation] イネいもち病菌感染誘導性を示すジベレリン2 (2012)
  • Author(s): 真籠洋、藤枝俊介、花田篤志、大里修一、神谷勇治、山口信次郎
  • Organizer: 酸化酵素遺伝子植物化学調節学会
  • Place of Presentation: 山形大学農学部
• [Presentation] イネいもち病菌感染誘導性を示すジベレリン2-酸化酵素遺伝子 (2012)
  • Author(s): 真籠洋、藤枝俊介、花田篤志、大里修一、神谷勇治、山口信次郎
  • Organizer: 植物化学調節学会
  • Place of Presentation: 山形大学農学部