Physiological role of cyclic electron transport around photosystem I in C4 photosynthesis

• Project/Area Number: 26450122
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Applied biochemistry
• Research Institution: Kyoto University
• Principal Investigator: Endo Tsuyoshi 京都大学, 生命科学研究科, 准教授 (90201962)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 循環的電子伝達 / 光化学系I / フラベリア / C４光合成 / ATP生成 / 光・酸化的ストレス / C4光合成 / 光合成電子伝達 / NDH / クロロフィル蛍光 / P700

Outline of Final Research Achievements

Although contribution of cyclic electron flow around PS I (CEF) to C4 photosynthesis has long been suggested, there are few physiological evidences. I showed that without proper functioning of NDH-mediated CEF, a C4 dicot, Flevaria bidentis cannot operate efficient CO2 assimilation by C4 photosynthesis under light limited condition. These results demonstrate that NDH-mediated CEF plays an indispensable role in C4 photosynthesis in F. bidentis.

Research Products

• [Journal Article] NDH-mediated cyclic electron flow around photosystem I is crucial for C4 photosynthesis. (2016)
  • Author(s): Ishikawa, N., Takabayashi, A., Noguchi, K., Tazoe, Y., Yamamoto, H., von Caemmerer, S., Sato, F. and Endo, T.
  • Journal Title: Plant Cell Physiol. Volume: 57 Issue: 10 Pages: 2020-2028
  • DOI: 10.1093/pcp/pcw127
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Accumulation of the components of cyclic electron flow around photosystem I in C4 plants, with respect to the requirements for ATP. (2016)
  • Author(s): Ishikawa, N., Takabayashi, A., Sato, F. and Endo, T.
  • Journal Title: Photosynth. Res. Volume: 129 Issue: 3 Pages: 261-277
  • DOI: 10.1007/s11120-016-0251-0
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Growth properties and biomass production in the hybrid C4 crop Sorghum bicolor. (2016)
  • Author(s): Tazoe, Y., Endo, T. et al.
  • Journal Title: Plant and Cell Physiology Volume: 56 Issue: 5 Pages: 944-952
  • DOI: 10.1093/pcp/pcv158
  • Peer Reviewed
• [Presentation] Chloroplastic NAD(P)H dehydrogenase complex in C4 photosynthesis. (2015)
  • Author(s): Endo, T.
  • Organizer: International congress of photosynthesis research for sustainability
  • Place of Presentation: Crete, Greece
  • Year and Date: 2015-09-21
  • Int'l Joint Research / Invited
• [Presentation] Cyclic electron transport in higher plants. (2015)
  • Author(s): 遠藤 剛
  • Organizer: 日本植物生理学シンポジウム
  • Place of Presentation: 東京農業大学
  • Year and Date: 2015-03-16 – 2015-03-18
  • Invited