Study of photosystem II repair mechanisms

2012 Fiscal Year Final Research Report

• Project/Area Number: 22770042
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Plant molecular biology/Plant physiology
• Research Institution: Okayama University
• Principal Investigator: KATO Yusuke 岡山大学, 資源植物科学研究所, 助教 (10437569)
• Project Period (FY): 2010 – 2012
• Keywords: 葉緑体機能 / 光合成 / タンパク質分解 / 光阻害 / FtsH / Deg / プロテアーゼ

Research Abstract

To avoid photoinhibition (light-dependent irreversible inactivation of Photosystem II (PSII)), an efficient degradation of D1 protein in the repair cycle of PSII is important. In this study, we focused on the function of proteases that are involved in D1 protein degradation, our results revealed the in vivo cooperative function between the FtsH-dependent processive degradation of D1 and the Deg-dependent cleavage of D1.

Research Products

• [Journal Article] Possible compensatory role among chloroplast proteases under excess-light stress condition (2013)
  • Author(s): Kato Y, Sakamoto W
  • Journal Title: Plant Signaling Behavior Volume: 8 Pages: e23198
  • DOI: doi:pii: e23198
  • Peer Reviewed
• [Journal Article] Cooperative D1 Degradation in the Photosystem II Repair Mediated by Chloroplastic Proteases in Arabidopsis (2012)
  • Author(s): Kato Y, Sun X, Zhang L, Sakamoto W
  • Journal Title: Plant Physiol Volume: 159 Pages: 1428-1439
  • DOI: doi:10.1104/pp.112.199042.
  • Peer Reviewed
• [Journal Article] Variegated tobacco leaves generated by chloroplast FtsH suppression: implication of FtsH function in the maintenance of thylakoid membranes (2012)
  • Author(s): Kato Y, Kouso T, Sakamoto W
  • Journal Title: Plant Cell Physiol Volume: 53 Pages: 391-404
  • DOI: doi:10.1093/pcp/pcr189
  • Peer Reviewed
• [Presentation] FtsH高発現植物体における光合成能とストレス耐性の評価 (2013)
  • Author(s): 加藤裕介、羽田野和実、坂本亘
  • Organizer: 日本植物生理学会第54回 年 会
  • Place of Presentation: 岡 山
  • Year and Date: 20130321-23
• [Presentation] Analysis of D1 degradation in the mutants lacking phosphorylation of PSII core protein (2012)
  • Author(s): Kato, Y. and Sakamoto, W
  • Organizer: Okayama University International Symposium" Structure and Dynamics of Photosynthetic Systems"
  • Place of Presentation: Okayama, Japan
  • Year and Date: 20121022-23
• [Presentation] 光化学系II 修復サイクルにおけるD 1 タンパク質分解メカニズム (2012)
  • Author(s): 加藤裕介・坂本亘
  • Organizer: 日本植物学会第76回大会
  • Place of Presentation: 姫路
  • Year and Date: 20120915-17
• [Presentation] FtsH, DEG プロテアーゼによる光化学系II 反応中心タンパク質D1 の協調的分解 (2012)
  • Author(s): 加藤裕介・坂本亘
  • Organizer: 日本植物生理学会第53回年会
  • Place of Presentation: 京都
  • Year and Date: 20120316-18
• [Presentation] Cooperative degradation in the PSII repair mediated by FtsH and Deg proteases in Arabidopsis chloroplasts. (2011)
  • Author(s): Kato, Y., and Sakamoto, W
  • Organizer: International Workshop on Photosystem II
  • Place of Presentation: Chengdu, China
  • Year and Date: 20111103-06
• [Presentation] Cooperative roles of FtsH, Deg and phosphorylation in the degradation of D1 protein in Photosystem II (2011)
  • Author(s): Kato, Y., Zhang, L., and Sakamoto, W
  • Organizer: Japanese-Finnish Seminar 2011, Future prospects of photosynthetic organisms: from genomes to environment
  • Place of Presentation: Okayama, Japan
  • Year and Date: 20110301-05
• [Book] Plastid protein degradation during leaf development and senescence: Role of protease and chaperones. In Chloroplast Development during Leaf Growth and Senescence, Advances in Photosynthesis and Respiration Series (Ed. Govindjee) (2013)
  • Author(s): Kato, Y. and Sakamoto, W
  • Publisher: Springer (in press)