Developmental genetics on regulatory pathway of phyllotaxy

• Project/Area Number: 20780001
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Breeding science
• Research Institution: The University of Tokyo
• Principal Investigator: JUNICHI Ito The University of Tokyo, 大学院・農学生命科学研究科, 准教授 (30345186)
• Project Period (FY): 2008 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2009: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2008: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
• Keywords: 植物 / 発生遺伝 / 葉序 / イネ / 遺伝学 / 発生・分化

Research Abstract

Shoot architecture largely depends on leaf initiation pattern at shoot apical meristem (phyllotaxy). I identified recessive mutants, decussate (dec), affecting phyllotactic pattern in rice. Map-based cloning of DEC, genetic and physiological studies of dec mutants revealed that DEC regulates phyllotactic pattern by a novel cytokinin signaling pathway.

Research Products

• [Journal Article] The ADAXIALIZED LEAF1 gene functions in leaf and embryonic pattern formation in rice. (2009)
  • Author(s): K Hibara, M Obara, E Hayashida, M Abe, T Ishimaru, H Satoh, J-I Itoh, Y Nagato
  • Journal Title: Developmental Biology Vol.334 Pages: 345-354
  • Peer Reviewed
• [Journal Article] Rice open beak is a negative regulator of class 1 knox genes and a positive regulator of class B floral homeotic gene. (2009)
  • Author(s): A Horigome, N Nagasawa, K Ikeda, M Ito, J-I Itoh, Y Nagato
  • Journal Title: Plant Journal Vol.58 Pages: 724-736
  • Peer Reviewed
• [Journal Article] (2009)
  • Author(s): T Kawakatsu, G Taramino, J-I Itoh, J Allen, Y Sato, S-K Hong, R Yule, N Nagasawa, M Kojima, M Kusaba, H Sakakibara, H Sakai, Y Nagato
  • Journal Title: Plant Journal Vol.58 Pages: 1028-1040
  • Peer Reviewed
• [Journal Article] The ADAXIALIZED LEAF1 gene functions in leaf and embryonic pattern formation in rice (2009)
  • Author(s): K Hibara, M Obara, E Hayashida, M Abe, T Ishimaru, H Satoh, J-I Itoh, Y Naeato
  • Journal Title: Developmental Biology 334 Pages: 345-354
  • Peer Reviewed
• [Journal Article] Rice open beak is a negative regulator of class 1 knox genes and a positive regulator of class B floral homeotic gene (2009)
  • Author(s): A Horigome, N Nagasawa, K Ikeda, M Ito, J-I Itoh, Y Nagato
  • Journal Title: Plant Journal 58 Pages: 724-736
  • Peer Reviewed
• [Journal Article] PLASTOCHRON3/GOLIATH encodes a glutamate carboxypeptidase required for proper development in rice (2009)
  • Author(s): T Kawakatsu, G Taramino, J-I Itoh, J Allen, Y Sato, S-K Hong, R Yule, N Nagasawa, M Kojima, M Kusaba, H Sakakibara, H Sakai, Y Nagato
  • Journal Title: Plant Journal 58 Pages: 1028-1040
  • Peer Reviewed
• [Journal Article] The SHOOT ORGANIZATION2 gene coordinates leaf domain development along the central-marginal axis in rice. (2008)
  • Author(s): Itoh, JI., Sato, Y., Nagato, Y.
  • Journal Title: Plant & Cell Physiology Vol.49 Pages: 1226-1236
  • Peer Reviewed
• [Journal Article] Developmental Role and Auxin Responsiveness of Class III HD-Zip Gene Family Members in Rice. (2008)
  • Author(s): Itoh, JI., Hibara, K., Sato, Y., Nagato, Y.
  • Journal Title: Plant Physiology Vol.147 Pages: 1960-1975
  • Peer Reviewed
• [Journal Article] The rice FLATTENED SHOOT MERISTEM, encoding CAF-1 p150 subunit, is required for meristem maintenance by regulating the cell-cycle period. (2008)
  • Author(s): Abe, M., Kuroshita, H., Umeda, M., Itoh, JI., Nagato Y.
  • Journal Title: Developmental Biology Vol.319 Pages: 384-393
  • Peer Reviewed
• [Journal Article] The SHOOT ORGANIZATION2 gene coordinates leaf domain development along the central-marginal axis in rice (2008)
  • Author(s): Itoh, JI., Sato, Y., Nagato, Y.
  • Journal Title: Plant & Cell Physiology 49 Pages: 1226-1236
  • Peer Reviewed
• [Journal Article] Developmental Role and Auxin Responsiveness of Class III HD-Zip Gene Family Members in Rice (2008)
  • Author(s): Itoh, JI., Hibara, K., Sato, Y., Nagato, Y.
  • Journal Title: Plant Physiology 147 Pages: 1960-1975
  • Peer Reviewed
• [Journal Article] The rice FLATTENED SHOOT MERISTEM, encoding CAF-1 p150 subunit, is required for meristem maintenance by regulating the cell-cycle period (2008)
  • Author(s): Abe, M., Kuroshita, H., Umeda, M., Itoh, JI. and Nagato Y.
  • Journal Title: Developmental Biology 319 Pages: 384-393
  • Peer Reviewed
• [Presentation] Identification of a novel gene regulating phyllotaxy in rice. (2009)
  • Author(s): Jun-ichi Itoh
  • Organizer: The 6th International Rice Genetics Symposium
  • Place of Presentation: Philippines, Manila
• [Presentation] Identification of a novel gene regulating phyllotaxy in rice (2009)
  • Author(s): Jun-ichi Itoh
  • Organizer: The 6th International Rice Genetics Symposium
  • Place of Presentation: Philippines, Manila
• [Presentation] 葉序を変更するdec変異体からの遺伝子単離 (2008)
  • Author(s): 伊藤純一
  • 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
  • Year and Date: 2008-07-04
• [Book] small RNAによる茎頂分裂組織形成制御植物のエピジェネティクス、細胞工学別冊24 (2008)
  • Author(s): 佐藤豊・野坂実鈴・伊藤純一
  • Total Pages: 169
  • Publisher: 秀潤社
• [Book] small RNAによる茎頂分裂組織形成制御植物のエピジェネティクス細胞工学別冊24 (2008)
  • Author(s): 佐藤豊・野坂実鈴・伊藤純一
  • Total Pages: 169
  • Publisher: 秀潤社