Function of QTL for rice lodging resistance in a typhoon

• Project/Area Number: 19580020
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Crop science/Weed science
• Research Institution: National Institute of Agrobiological Sciences
• Principal Investigator: ISHIMARU Ken National Institute of Agrobiological Sciences, 光環境応答研究ユニット, 主任研究員 (80370641)
• Project Period (FY): 2007 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2008: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2007: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: イネ / コシヒカリ / 倒伏 / QTL / 炭水化物 / 台風 / 耐倒伏性 / ヤング率

Research Abstract

We demonstrated the new target for lodging resistance in rice (Oryzasativa L.) by the analysis of physiological function of a locus for lodging resistance in a typhoon (Lrt5) with the near isogenic line under rice "Koshihikari" genetic background. The weight of the buckled upper plant parts increased the pressure on adjacent plants and caused a domino effect in "Koshihikari". The rigidity of the upper culm by the higher starch content (as a result of delayed senescence in the upper leaves) may be responsible for the higher lodging resistance during a typhoon in rice. Additionally, linkage mapping allowed us to map the Lrt5 region to 4.6cM.

Research Products

• [Journal Article] New target for rice lodging resistance and its effect in a typhoon (2008)
  • Author(s): Ken Ishimaru、Eiji Togawa、Taiichro Ookawa、Takayuki Kashiwagi、Yuka Madoka、Naoki Hirotsu
  • Journal Title: Planta Vol.227 Pages: 601-609
  • Peer Reviewed
• [Journal Article] New target for rice lodging resistance and its effect in a typhoon. (2008)
  • Author(s): Ishimaru, et. al.
  • Journal Title: Planta 227 Pages: 601-609
  • Peer Reviewed
• [Journal Article] バイオマスエネルギー生産に向けたイネ草丈の制御 (2007)
  • Author(s): 廣津直樹、柏木孝幸、円由香、石丸健
  • Journal Title: 日本作物学会紀事 Vol.76 Pages: 501-507
  • NAID: 110006436789
  • Peer Reviewed
• [Journal Article] バイオマスエネルギー生産に向けたイネ草丈の制御. (2007)
  • Author(s): 廣津 直樹, ら
  • Journal Title: 日本作物学会紀事 76 Pages: 501-507
  • Peer Reviewed
• [Journal Article] Protocol: a simple gel-free method for SNP genotyping using allele-specific primers in rice and other species
  • Author(s): Naoki Hirotsu、Naomi Murakami、Takayuki Kashiwagi、Kazuhiro Ujiie、Ken Ishimaru
  • Journal Title: Plant Methods (in press)
  • Peer Reviewed
• [Journal Article] Protocol : a simple gel-free method for SNP genotyping using allele-specific primers in rice and other plant species.
  • Author(s): Hirotsu, et al.
  • Journal Title: Plant Methods (In press)
  • Peer Reviewed
• [Presentation] ASPアレイを用いたコシヒカリの準同質遺伝子系統の選抜とその生理解析 (2008)
  • Author(s): 廣津 直樹, ら
  • Organizer: 日本作物学会第225回講演会
  • Place of Presentation: 農林水産省農林水産技術会議事務局筑波事務所
  • Year and Date: 2008-03-28
• [Presentation] ASPアレイを用いたコシヒカリの準同質遺伝子系統の選抜とその生理解析
  • Author(s): 廣津直樹、柏木孝幸、石丸健
  • Organizer: 日本作物学会第225会講演会