Biological analysis on decision mechanism of the ideal plant type for hyper-yield rice breeding

• Project/Area Number: 18380004
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Breeding science
• Research Institution: Nagoya University
• Principal Investigator: KITANO Hidemi Nagoya University, 生物機能開発利用研究センター, 教授 (50144184)
• Co-Investigator(Kenkyū-buntansha): SAZUKA Takashi 名古屋大学, 生物機能開発利用研究センター, 准教授 (70362291)
• Project Period (FY): 2006 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥17,850,000 (Direct Cost: ¥15,300,000、Indirect Cost: ¥2,550,000); Fiscal Year 2008: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2007: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000); Fiscal Year 2006: ¥6,800,000 (Direct Cost: ¥6,800,000)
• Keywords: イネ / 草型 / 矮性 / 多収性 / 倒伏抵抗性 / 植物ホルモン / 遺伝子単離 / 育種学 / 遺伝学 / 植物 / 倒伏 / 多収 / 半矮性 / 強稈

Research Abstract

イネの収量性に直結する草型決定に関わる突然変異体を用いて原因遺伝子を同定し、その遺伝要因を明らかにすることを目的に研究を進めた結果、Ssi1 やS1r1-dは草丈を優性形質として抑制するが、草型自体は大きく変更しないことが判明した。一方、既知のブラシノライド関連変異体や、本研究で対象としたTLA変異体などでは、直立葉やその逆の形態的特徴を表現し、草丈の制御とともに草型を大きく変更する機能を示すことが判明した。Ssi1 とTla1 の原因遺伝子を単離し前者については既に成果を公表した。

Research Products

• [Journal Article] dominant dwarf mutants, Slr1-d, in rice (2009)
  • Author(s): Asano, K., Hirano, K., Ueguchi-Tanaka, M., Rosalyn B., Angels-Shim, Komura, T., Satoh, H., Kitano, H., Matsuoka, M. and Ashikari, M.
  • Journal Title: Mol.Genet. Genomics 281 Pages: 223-231
  • Peer Reviewed
• [Journal Article] Isolation and characterization of dominant dwarfmutants, Slrl-d, in rice. (2009)
  • Author(s): Kenji Asano
  • Journal Title: Mol. Genet. Genetics 281 Pages: 223-231
  • Peer Reviewed
• [Journal Article] High resolution mapping revealed a 1.3-Mbp genomic inversion in Ssi1, a dominant semidwarf gene in rice (Oryza sativa L.). (2008)
  • Author(s): Miura, K., Wu, J., Sunohara, H., Wu, X., Matsumoto, T., Matsuoka, M, Ashikari, M. and Kitano, H.
  • Journal Title: Plant Breeding 128 Pages: 63-69
  • Peer Reviewed
• [Journal Article] High resolution mapping revealed a 1.3-Mbp genomic inversion in Ssil, a dominant semidwarf gene in rice (Oryza sativa L. ) . (2008)
  • Author(s): Kotaro Miura
  • Journal Title: Plant Breeding 128 Pages: 63-69
  • Peer Reviewed
• [Journal Article] High resolution mapping revealed a 1.3-Mbp genomic inversion in Ssil, a dominant semidwarf gene in rice(Oryza sativa L.). (2008)
  • Author(s): Miura, K.
  • Journal Title: Plant Breeding 「掲載確定」 127
  • Peer Reviewed
• [Journal Article] Genetic and molecular analysis of utility of sd1 alleles in rice breeding (2007)
  • Author(s): Asano, K., Takashi, T., Miura, K., Qian, Q., Kitano, H., Matsuoka, M. and Ashikari, M.
  • Journal Title: Breed. Sci 57 Pages: 53-58
  • NAID: 110006225142
  • Peer Reviewed
• [Journal Article] Genetic and molecular analysis of utility of sd1 alleles in rice breeding (2007)
  • Author(s): Asano, K.
  • Journal Title: Breeding Science 57 Pages: 53-58
• [Journal Article] Morphological alteration caused by brassinosteroid insensitivity increases the biomass and grain production of rice (2006)
  • Author(s): Morinaka, Y., Sakamoto, T., In ukai, Y., Agetsuma, M., Kitano, H., Ashikari, M. and Matsuoka , M.
  • Journal Title: Plant physiol 141 Pages: 924-931
  • Peer Reviewed
• [Journal Article] Effects of Ssi1 gene controlling dm-type internode elongation pattern on lodging resistance and panicle characters in rice (2006)
  • Author(s): Sunohara, H., Miura, K., Wu, X., Saeda, T., Mizuno, S., Ashikari, M., Matsuoka, M. and Kitano, H.
  • Journal Title: Breeding Science 56 Pages: 261-268
  • NAID: 110004789106
  • Peer Reviewed
• [Journal Article] Morphological alteration caused by brassinosteroid insensitivity increases the biomass and grain production of rice. (2006)
  • Author(s): Morinaka, Y.
  • Journal Title: Plant physiology 141 Pages: 924-931
• [Journal Article] Effects of Ssil gene controlling dm-type internode elongation pattern on lodging resistance and panicle characters in rice. (2006)
  • Author(s): Sunohara, H.
  • Journal Title: Breeding Science 56 Pages: 261-268
• [Journal Article] The rice SPINDLY gene functions as a negative regulator of gibberellin signaling by controlling the suppressive function of the DELLA protein, SLR1, and modulating brassinosteroid synthesis. (2006)
  • Author(s): Simada, A.
  • Journal Title: Plant Journal 48 Pages: 390-402
• [Presentation] イネにおける収量性育種と今後の課題 (2008)
  • Author(s): 北野英己
  • Organizer: 日本育種学会中部地区談話会
  • Place of Presentation: 名城大学、名古屋
  • Year and Date: 2008-11-29
• [Presentation] Functional Analysis of Induced Semidwarf mutations and application to rice breeding (2008)
  • Author(s): Kitano, H., Sato, K., Ikeda, M. and Ashikari, M.
  • Organizer: International Symposium on Induced Mutations in Plants IAEA
  • Place of Presentation: オーストリア(IAEA、ウイーン)
  • Year and Date: 2008-08-14
• [Presentation] Functional Analysis of Induced Semidwarf mutations and application to rice breeding., 2008.08.14. (Vienna, Austria) (2008)
  • Author(s): Hidemi Kitano
  • Organizer: International Symposium on Induced Mutations in Plants, IAEA
  • Place of Presentation: オーストリア(ウィーン)
  • Year and Date: 2008-08-14
• [Presentation] 日本型イネは変異型/SD1/を有する (2008)
  • Author(s): 浅野賢治、北野英己、松岡信、芦苅基行
  • Organizer: イネ遺伝学・分子生物学ワークショップ
  • Place of Presentation: 九州大学、福岡
  • Year and Date: 2008-07-04
• [Presentation] Molecular Research Progress on High Yield Control, and the Future Direction (2007)
  • Author(s): Kitano, H. Ikeda, M., Takashi, T., Sakamoto, T., Asikari, M. and Matsuoka, M.
  • Organizer: The 6^<th> Asian Crop Science Association Conference (Bioasia 2007)
  • Place of Presentation: タイ王国(バンコク)
  • Year and Date: 2007-11-09
• [Presentation] Molecular research Progress on high yield control, and the future direction. (2007)
  • Author(s): Kitano, H.
  • Organizer: The 6th Asian Crop Science Association Conference(Bioasia 2007)
  • Place of Presentation: Bangkok(タイ)
  • Year and Date: 2007-11-09
• [Presentation] イネ半雄性矮性変異体Slr1-dの遺伝学解析 (2007)
  • Author(s): 浅野賢治、平野恒、上口(田中)美弥子、香村敏郎、佐藤光、北野英己、松岡信、芦苅基行
  • Organizer: 第112回日本育種学会
  • Place of Presentation: 山形大学、山形
  • Year and Date: 2007-09-22
• [Presentation] ブラシノステロイド非感受性イネ変異体の解析 (2007)
  • Author(s): 坂本知昭,松岡信,北野英己
  • Organizer: 第112回日本育種学会
  • Place of Presentation: 山形大学、山形
  • Year and Date: 2007-09-22
• [Presentation] 新規イネ半矮性変異の機能解析と育種利用 (2006)
  • Author(s): 北野英己
  • Organizer: 第45回ガンマフィールドシンポジューム
  • Place of Presentation: 水戸、茨城
  • Year and Date: 2006-07-12