Molecular analysis of sexual barriers due to late-flowering observed only F1 flowering between japonica and indica of rice

• Project/Area Number: 19043014
• Research Category: Grant-in-Aid for Scientific Research on Priority Areas
• Allocation Type: Single-year Grants
• Review Section: Biological Sciences
• Research Institution: National Institute of Agrobiological Sciences
• Principal Investigator: IZAWA Takeshi National Institute of Agrobiological Sciences, 光環境応答研究ユニット, 上級研究員 (10263443)
• Project Period (FY): 2007 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥5,800,000 (Direct Cost: ¥5,800,000); Fiscal Year 2008: ¥2,900,000 (Direct Cost: ¥2,900,000); Fiscal Year 2007: ¥2,900,000 (Direct Cost: ¥2,900,000)
• Keywords: イネ / F1 / 出穂期 / インディカ / ジャポニカ / 生殖隔離 / 出穂 / F1世代 / Hd5 / ジャポニカ種 / インディカ種 / 日印交雑 / QTL解析 / マッピング

Research Abstract

栽培イネは大きくジャポニカ種とインディカ種に分けられる。いわゆる日印の交雑では、F1個体が大きく出穂遅延を起こすことがあり、生殖隔離の一因になることが示唆されている。本研究課題では、そういったF1個体が明確な遅延を示す組み合わせである日本晴(ジャポニカ種)と南京11号(インディカ種)の交配後代を使い、遺伝子レベルでのメカニズムの解明を目指し、在来種の解析により、イネの栽培化におけるこの現象の役割を推定した。

Research Products

• [Journal Article] DNA changes tell us about rice domestication. (2009)
  • Author(s): Izawa T, Konishi S, Shomura A, Yano M.
  • Journal Title: Curr Opin Plant Biol. 2009 Apr 12(2) Pages: 185-192
• [Journal Article] In silico identification of short nucleotide sequences associated with gene expression of pollen development in rice (2008)
  • Author(s): Mihara M, Itoh T, Izawa T
  • Journal Title: Plant and Cell Physiology 49(10) Pages: 1451-1464
  • NAID: 10027334081
• [Journal Article] Abduction of japonica rice domestication process from the distribution of six functional nucleotide polymorphisms of domestication-related genes in various landraces and modern cultivars (2008)
  • Author(s): Konishi S, Ebana K, Izawa T
  • Journal Title: Plant and Cell Physiology 49(9) Pages: 1283-1293
• [Journal Article] The process of rice domestication (2008)
  • Author(s): Izawa T
  • Journal Title: A new model based on recent data Rice 1(2) Pages: 127-134
• [Journal Article] Deletion in a gene associated with grain size increased yields during rice domestication (2008)
  • Author(s): Shomura A, Izawa T(co-first), Ebana K, Ebitani T, Kanegae H, Konishi S, Yano M
  • Journal Title: Nature Genetics 40(8) Pages: 1023-1028
• [Journal Article] Reply to "Japonica rice carried to, not from, Southeast Asia" (2008)
  • Author(s): Izawa T, Shomura A, Konishi S, Ebana K, Yano M
  • Journal Title: Nature Genetics 40(11) Pages: 1264-1266
• [Journal Article] In silico identification of short nucleotide sequences associated with gene expression of pollen development in rice (2008)
  • Author(s): Mihara M, Itoh T, Izawa T
  • Journal Title: Plant and Cell Physiology 49 Pages: 1451-1464
  • NAID: 10027334081
  • Peer Reviewed
• [Journal Article] Inference of japonica rice domestication process from the distribution of six functional nucleotide polymorphisms of domestication-related genes in various landraces and modern cultivars (2008)
  • Author(s): Konishi S, Ebana K, Izawa T
  • Journal Title: Plant and Cell Physiology 49 Pages: 1283-1293
  • NAID: 10027333347
  • Peer Reviewed
• [Journal Article] Deletion in a gene associated with grain size increased yields during rice domestication (2008)
  • Author(s): Shomura A, Izawa T(co-first), Ebana K, Ebitani T, Kanegae H, Konishi S, Yano M
  • Journal Title: Nature Genetics 40 Pages: 1023-1028
  • Peer Reviewed
• [Journal Article] Reply to "Japonica rice carried to, not from, Southeast Asia" (2008)
  • Author(s): Izawa T, Shomura A, Konishi S, Ebana K, Yano M
  • Journal Title: Nature Genetics 40 Pages: 1264-1266
  • Peer Reviewed
• [Journal Article] Daylength measurements by rice plants in photoperiodic short-day flowering. (2007)
  • Author(s): Takeshi Izawa
  • Journal Title: Int Rev Cytol 256 Pages: 191-222
  • Peer Reviewed
• [Journal Article] Adaptation of flowering-time by natural and artificial selection in Arabidopsis and rice. (2007)
  • Author(s): Takeshi Izawa
  • Journal Title: J Exp Bot 58 Pages: 3091-3097
  • Peer Reviewed
• [Journal Article] [Floral transition around summer solstice of rice, a short-day plant: What occurred in rice domestication?] (2007)
  • Author(s): Takeshi Izawa
  • Journal Title: Tanpakushitsu Kakusan Koso 52 Pages: 1925-1930
• [Presentation] 温故きを温ねて、新しきを知る -イネの栽培化の分子生物学- (2007)
  • Author(s): 井澤 毅
  • Organizer: 植物科学シンポジウム
  • Place of Presentation: コクヨホール
  • Year and Date: 2007-12-03
• [Book] ちょっと、寄り道しようか? サイエンスポータル (オピニオン):77 (2008)
  • Author(s): 井澤 毅
• [Book] イネはいかに雑草から作物になったのか? -温故知新の分子生物学- 科学 78(10) (2008)
  • Author(s): 井澤 毅
• [Book] イネの粒幅を決める遺伝子の単離とジャポニカイネの栽培化過程の推測、ブレインテクノニュース、130 (2008)
  • Author(s): 小西 左江子、正村 純彦、江花 薫子、矢野 昌裕、井澤 毅
• [Book] 植物の進化 イネはいかに栽培化されたのか? (2007)
  • Author(s): 井澤 毅
  • Total Pages: 212
  • Publisher: 秀潤社
• [Remarks] ホームページ等
  • URL: http://salad.dna.affrc.go.jp/salad/
• [Remarks]
  • URL: http://salad.dna.affrc.go.jp/salad/
• [Patent(Industrial Property Rights)] 遺伝子クラスタリング装置およびプログラム (2008)
  • Inventor(s): 井澤 毅・三原 基広
  • Industrial Property Rights Holder: :(独)農業生物資源研究所・(株)ダイナコム
  • Filing Date: 2008
• [Patent(Industrial Property Rights)] 遺伝子クラスタリング装置およびプログラム
  • Inventor(s): 井澤 毅, 三原 基広
  • Industrial Property Rights Holder: (独)生物研, (株)ダイナコム