High [CO2] adaptation of soybeans in terms of the single leaf photosynthesis

• Project/Area Number: 15K18634
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Crop production science
• Research Institution: Kyoto University
• Principal Investigator: Tanaka Yu 京都大学, 農学研究科, 助教 (50634474)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: ダイズ / 光合成 / 高CO2 / 遺伝的変異 / 個葉光合成能 / 気孔コンダクタンス / 葉身Rubisco含量 / 葉肉コンダクタンス / Rubisco / 遺伝的差異 / 高CO2条件

Outline of Final Research Achievements

The leaf photosynthesis is one of the most important trait to determine the soybean productivity. This study elucidated that a local variety, PI603911C, showed the extremely high photosynthetic rate under the ambient and high CO2 condition. This phenotype is partly attributed to the greater carboxylation activity in the mesophyll cells. This study also detected several soybean varieties having high photosynthetic rate. Notably, these varieties achieved high photosynthetic rate with different physiological mechanisms. It is expected that this study provides useful information to the future soybean breeding programs.

Research Products

• [Int'l Joint Research] University of Illinois, Urbana-Champaign(米国)
• [Int'l Joint Research] イリノイ大学アーバナ・シャンペーン校(米国)
• [Journal Article] Activation State of Rubisco Decreases with the Nitrogen Accumulation During the Reproductive Stage in Soybean [Glycine max. (L.) Merr.] (2018)
  • Author(s): Kazuma Sakoda, Seita Suzuki, Hiroshi Fukayama, Yu Tanaka and Tatsuhiko Shiraiwa
  • Journal Title: Photosynthetica Volume: 印刷中
  • Peer Reviewed
• [Journal Article] Genetic and Physiological Diversity in the Leaf Photosynthetic Capacity of Soybean (2016)
  • Author(s): Kazuma Sakoda, Yu Tanaka, Stephen P. Long, and Tatsuhiko Shiraiwa
  • Journal Title: Crop Science Volume: 56 Issue: 5 Pages: 2731-2741
  • DOI: 10.2135/cropsci2016.02.0122
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Presentation] ダイズにおける個葉光合成能力の系統間差についての水分生理学的解析 (2017)
  • Author(s): 鈴木晴大，迫田和馬，田中佑，白岩立彦
  • Organizer: 第244回日本作物学会講演会
• [Presentation] ダイズにおける個葉光合成能力および葉肉コンダクタンスの遺伝的変異について (2016)
  • Author(s): 迫田和馬，田中佑，Johannes Kromdijk, 白岩立彦，Randall Nelson, Stephen P. Long
  • Organizer: 第241回 日本作物学会
  • Place of Presentation: 茨城大学水戸キャンパス
  • Year and Date: 2016-03-28
• [Presentation] Genetic variation of the leaf photosynthesis under steady and non-steady-state conditions in soybean (2015)
  • Author(s): 田中佑
  • Organizer: The 2015 Tokyo Whole Plant Photosynthesis Workshop
  • Place of Presentation: 東京農工大学
  • Year and Date: 2015-05-15
  • Int'l Joint Research / Invited