Genome barrier between nucleus and mitochondria in cytoplasmic male sterility in rice

2008 Fiscal Year Self-evaluation Report

• Project Area: Genome Barriers in Plant Reproduction
• Project/Area Number: 18075002
• Research Category: Grant-in-Aid for Scientific Research on Priority Areas
• Allocation Type: Single-year Grants
• Review Section: Biological Sciences
• Research Institution: Tohoku University
• Principal Investigator: TORIYAMA Kinya Tohoku University, 大学院・農学研究科, 教授 (20183882)
• Project Period (FY): 2006 – 2010
• Keywords: イネ / ゲノム / 細胞質雄性不稔 / 生殖 / ミトコンドリア

Research Abstract

細胞質雄性不稔性は、ミトコンドリアゲノムと核ゲノムの特定の組み合わせで花粉発育障害が起きる現象である。雄性不稔細胞質のミトコンドリアには雄性不稔の原因となるキメラ遺伝子が存在し、一方、核コードの稔性回復遺伝子はキメラ遺伝子産物の修飾を行なって障害を回避していると考えられている。本研究では、イネにおける3種類の細胞質雄性不稔/稔性回復遺伝子(BT-CMS/Rf1, LD-CMS/Rf2, CW-CMS/Rf17)を材料とし、それぞれ、雄性不稔発現機構および稔性回復機構の解明を行なうことを目的とする。

Research Products

• [Journal Article] Suppression mechanism of mitochondrial ORF79 accumulation by Rf1 protein (2008)
  • Author(s): Kazama T, Nakamura T, Watanabe M, Sugita M, Toriyama K
  • Journal Title: BT-type cytoplasmic male sterile rice Plant J 55 Pages: 619-628
  • Peer Reviewed
• [Journal Article] Genome barriers between nuclei and mitochondria exemplified by cytoplasmic male sterility (2008)
  • Author(s): Fujii S, Toriyama K
  • Journal Title: Plant Cell Physiol 49 Pages: 1484-1494
  • Peer Reviewed
• [Journal Article] Retrograde regulation of nuclear gene expression in CW-CMS of rice (2007)
  • Author(s): Fujii S, Komatsu S, Toriyama K
  • Journal Title: Plant Mol Biol 63 Pages: 405-417
  • Peer Reviewed
• [Presentation] Toward understanding genome barriers between nuclei and mitochondria exemplified by cytoplasmic male sterility in rice (2007)
  • Author(s): Toriyama K, Kazama T, Fujii S, Itabashi E, Iwata N
  • Organizer: International Congress on Plant Mitochondrial Biology
  • Place of Presentation: Nara, Japan
  • Year and Date: 20070625-29
• [Book] Molecular studies on cytoplasmic male sterility-related genes and restorer genes in rice. In Rice Biology in Genomics Era. Biotechnology in Agriculture and Forestry 62. Edited by Hirano H, Hirai A, Sano Y, Sasaki T. (2008)
  • Author(s): Fujii S, Kazama T, Toriyama K
  • Total Pages: 205-215
  • Publisher: Springer-Verlag Berlin Heiderberg, Germany
• [Remarks] 研究室ホームページ「環境適応生物工学研究室」
  • URL: http://www.agri.tohoku.ac.jp/bioadp/PukiWiki/index.php
• [Remarks] 特定領域ホームページ「植物ゲノム障壁」
  • URL: http://www.nig.ac.jp/labs/NigPrjct/PlantGenBarr/
• [Remarks] テレビ放送アーカイブ「東北大学の新世紀」鳥山欽哉「花粉の不思議を解明」
  • URL: http://www.tohoku100-tv.jp/thisweek/071203/index.html
• [Patent(Industrial Property Rights)] イネCW型雄性不稔細胞質に対する稔性回復遺伝子及び稔性回復方法 (2008)
  • Inventor(s): 鳥山欽哉・藤井壮太
  • Industrial Property Rights Holder: 東北大学
  • Industrial Property Number: 出願, 2008-62879
  • Filing Date: 2008-03-12