Analysis of molecular mechanisms controlling axillary meristem formation and development

• Project/Area Number: 18370014
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: 植物生理・分子
• Research Institution: The University of Tokyo
• Principal Investigator: KYOZUKA Junko The University of Tokyo, 大学院・農学生命科学研究科, 准教授 (90273838)
• Project Period (FY): 2006 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥17,510,000 (Direct Cost: ¥14,900,000、Indirect Cost: ¥2,610,000); Fiscal Year 2008: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2007: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000); Fiscal Year 2006: ¥6,200,000 (Direct Cost: ¥6,200,000)
• Keywords: 植物成長 / 分枝形成 / 茎頂メリステム(SAM) / 腋生メリステム(AM) / メリステムアイデンティティー / イネ / メリステム / 腋生分裂組織 / 分げつ / 腋芽形成 / LAX / 穂の分枝 / 細胞間移動

Research Abstract

植物は分枝(枝分かれ)を繰り返すことにより複雑なからだつくりを実現する。本研究では、イネを研究対象として枝別れの形成や成長に関わる遺伝子を単離し、それらの機能を解析した。腋生メリステム形成に必須であるLAXタンパク質が細胞間を移行してメリステム細胞の増殖を促進すること、サイトカイニンがメリステム活性の維持に必須でることを明らかにした。また、腋生メリステムの花メリステムへの転換の制御に関わる遺伝子ネットワークを解析した。

Research Products

• [Journal Article] Expression Level of ABERRANT PANICLE ORGANIZATION 1 determines rice inflorescence form through control of cell proliferation in the meristem (2009)
  • Author(s): Ikeda-Kawakatsu K, Yasuno N, Oikawa T, Iida S, Nagato Y, Maekawa M, Kyozuka J.
  • Journal Title: Plant Phys (in press)
  • Peer Reviewed
• [Journal Article] Two-step regulation of protein accumulation in axillary meristem formation in rice (2009)
  • Author(s): Oikawa T, Kyozuka J.
  • Journal Title: Plant Cell 21 Pages: 1095-1108
  • Peer Reviewed
• [Journal Article] Short panicle1 encodes a putative PTR transporter and ddtermines rice panicle size (2009)
  • Author(s): Li S, Qian Q, Fu Z, Zeng D, Meng X, Kyozuka J, Maekawa M, Zhu X, Zhang J, Li J, Wang Y.
  • Journal Title: Plant J. (in press)
  • Peer Reviewed
• [Journal Article] Two-step regulation of LAX1 protein accumulation in the control of axillary meristem formation in rice (2009)
  • Author(s): Oikawa T, Kvozuka J
  • Journal Title: Plant Cell (印刷中)
  • Peer Reviewed
• [Journal Article] Two-step regulation of LAX1 protein accumulation in the control of axillary meristem formation in rice (2009)
  • Author(s): Oikawa T, Kyozuka J
  • Journal Title: Plant Cell (印刷中)
  • Peer Reviewed
• [Journal Article] Inhibition of shoot branching by new terpenoid plant hormones (2008)
  • Author(s): Umehara M, Hanada A, Yoshida S, Akiyama K, Arite T, Takeda-Kamiya N, Magome H, Kamiya Y, Shirasu K, Yoneyama K, Kyozuka J, Yamaguchi S.
  • Journal Title: Nature(Article) 455 Pages: 195-200
  • Peer Reviewed
• [Journal Article] Direct control of shoot meristem activity by a cytokinin activating enzyme (2007)
  • Author(s): Kurakawa T, Ueda N, Maekawa M, Kobayashi K, Kojima M, Nagato Y, Sakakibara H, Kyozuka J.
  • Journal Title: Nature 455 Pages: 652-655
  • Peer Reviewed
• [Journal Article] DWARF10, an RMS1/MAX4/DAD1 ortholog, controls lateral bud outgrowth in rice (2007)
  • Author(s): Arite T, Iwata H, Ohshima K, Maekawa M, Nakajima M, Kojima M, Sakakibara H, Kyozuka J.
  • Journal Title: Plant J. 51 Pages: 1019-1029
  • Peer Reviewed
• [Journal Article] Characterization of OsPID, the rice ortholog of PINOID, and its possible involvement in the control of polar auxin transport (2007)
  • Author(s): Morita Y, Kyozuka J.
  • Journal Title: Plant Cell Physiol 48 Pages: 540-549
  • NAID: 10018914004
  • Peer Reviewed
• [Journal Article] Gain-of-Function Phenotypes of Chemically Synthetic CLAVATA3/ESR-Related (CLE) Peptides in Arabidopsis thaliana and Oryza sativa (2007)
  • Author(s): Kinoshita A, Nakamura Y, Sasaki E, Kyozuka J, Fukuda H, Sawa S.
  • Journal Title: Plant Cell Physiol 48 Pages: 1821-1825
  • NAID: 10027006521
  • Peer Reviewed
• [Journal Article] Rice tillering dwarf mutant dwarf3 has increased leaf longevity during darkness-induced senescence or hydrogen peroxide-induced cell death (2007)
  • Author(s): Yan H, Saika H, Maekawa M, Takamure I, Tsutsumi N, Kyozuka J. Nakazono M.
  • Journal Title: Genes Genet. Syst 82 Pages: 361-366
  • NAID: 10024394884
  • Peer Reviewed
• [Journal Article] Rice ABERRANT PANICLE ORGANIZATION 1, encoding an F-box protein, regulates meristem fate (2007)
  • Author(s): Ikeda K, Ito M, Nagasawa N, Kyozuka J, Nagato Y.
  • Journal Title: Plant J. 51 Pages: 1030-1040
  • Peer Reviewed
• [Journal Article] Genome-wide analysis of spatial and temporal gene expression in rice panicle development (2006)
  • Author(s): Furutani I, Sukegawa S, Kyozuka J.
  • Journal Title: Plant J. 46 Pages: 503-511
  • Peer Reviewed
• [Journal Article] Genome-wide analysis of spatial and temporal gene expression in rice panicle development. (2006)
  • Author(s): Furutani I, Sukegawa S, Kyozuka J.
  • Journal Title: Plant Journal 46 Pages: 503-503
• [Presentation] イネの分枝とストリゴラクトン (2009)
  • Author(s): 経塚淳安野奈緒子、池田恭子、飯田滋、長戸康郎、前川雅彦、経塚淳
  • Organizer: 日本植物生理学会年会
  • Place of Presentation: 名古屋大学
• [Presentation] ABERRANT PANICLE ORGNIZATION1 は花序メリステムの細胞分裂を促進する (2009)
  • Author(s): 安野奈緒子、池田恭子、飯田滋、長戸康郎、前川雅彦、経塚淳安野奈緒子、池田恭子、飯田滋、長戸康郎、前川雅彦、経塚淳
  • Organizer: 日本植物生理学会年会
  • Place of Presentation: 名古屋大学
• [Presentation] イネ胚発生におけるサイトカイニンの機能の解明 (2009)
  • Author(s): 佐々木恵理加、澤進一郎、経塚淳子
  • Organizer: 日本植物生理学会年会
  • Place of Presentation: 名古屋大学
• [Presentation] イネLAX PANICLE1 (LAX1) 遺伝子の機能解析 (2009)
  • Author(s): 及川鉄男、経塚淳子
  • Organizer: 日本植物生理学会年会
  • Place of Presentation: 名古屋大学
• [Presentation] ABERRANT PANICLE ORGANIZATION1は花序メリステムの細胞分裂を促進する (2009)
  • Author(s): 安野奈緒子, 池田恭子, 飯田滋, 長戸康郎, 前川雅彦, 経塚淳子
  • Organizer: 日本植物生理学会年会
  • Place of Presentation: 名古屋大学
• [Presentation] イネLAX PANICLE1 (LAX1)遺伝子の機能解析 (2009)
  • Author(s): 及川鉄男, 経塚淳子
  • Organizer: 日本植物生理学会年会
  • Place of Presentation: 名古屋大学
• [Book] 遺伝のしくみ (2008)
  • Publisher: 新星出版社
• [Book] シマウマの縞蝶の模様 (2007)
  • Author(s): ショーン・B・キャロル著
  • Publisher: 光文社