Analysis of Natural Abundance of Isotopes Emitted from Plants in Relation to Carbon and Nitrogen Utilization

• Project/Area Number: 21580013
• 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: Kyoto Institute of Technology
• Principal Investigator: TATSUMI Jiro 京都工芸繊維大学, 生物資源フィールド科学教育研究センター, 教授 (00163486)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2010: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 植物 / 環境 / ストレス / 安定同位体 / 生理学

Research Abstract

The carbon isotope composition(d13C) of CO2 respired by excised organs of rice and maize was measured under dark condition. In rice plants a significant difference in d13C signature of CO2 was found ; the d13C was higher in the roots than other organs(the shoot in vegetative stage and the mature leaves and ears in reproductive stage). In contrast maize showed no significant difference in d13C signature among organs in both vegetative and reproductive stages. These suggest that substrate pools utilized for respiration can be different among organs in rice plants as compared with maize.

Research Products

• [Journal Article] (2010)
  • Author(s): 巽二郎(分担執筆)
  • Journal Title: 作物学用語事典(養賢堂) Pages: 288-293
• [Presentation] 作物生産科学への提言.根研究30年から(招待講演) (2012)
  • Author(s): 巽二郎
  • Organizer: 第1回作物生産科学コロキウム
  • Place of Presentation: 大阪府立大学
  • Year and Date: 2012-03-18
• [Presentation] 作物生産科学への提言～根研究30年から (2012)
  • Author(s): 巽二郎
  • Organizer: 日本作物学会
  • Place of Presentation: 大阪府立大学交流会館(招待講演)
  • Year and Date: 2012-03-18
• [Presentation] Variation of 13C natural abundance in CO2 released from the roots of rice and maize plants (2011)
  • Author(s): Kuribayashi, A. and Tatsumi, J.
  • Organizer: JSRR's 20^<th> Anniversary Symposim : The Latest Frontiers of Root Research in Asia
  • Place of Presentation: University of Tokyo, Tokyo
  • Year and Date: 2011-11-06
• [Presentation] Variation of 13C natural abundance in CO2 released from the roots of rice and maize plants (2011)
  • Author(s): Kuribayasi, A, Tatsumi, J
  • Organizer: JSRR's 20^<th> Anniversary Symposium-The Latest Frontiers of Root Research in Asia
  • Place of Presentation: 東京都,東京大学弥生講堂
  • Year and Date: 2011-11-06
• [Presentation] 施肥窒素の化合形態がアルファルファ根系のフラクタル次元とラクナリティーに及ぼす影響 (2010)
  • Author(s): 廣瀬大介・巽二郎
  • Organizer: 日本作物学会
  • Place of Presentation: 宇都宮大学
  • Year and Date: 2010-03-30
• [Book] 作物学用語事典 (2010)
  • Author(s): 巽二郎
  • Publisher: 養賢堂