@article{33ba0404e0544c0dbf5c6590c202f890,
title = "The circadian rhythm regulator RpaA modulates photosynthetic electron transport and alters the preferable temperature range for growth in a cyanobacterium",
abstract = "Cyanobacterial strains can grow within a specific temperature range that approximately corresponds to their natural habitat. However, how the preferable temperature range for growth (PTRG) is determined at the molecular level remains unclear. In this study, we detected a PTRG upshift in a mutant strain of Synechococcus elongatus PCC 7942 lacking the circadian rhythm regulator RpaA. Subsequent analyses revealed that RpaA decreases the electron transport from photosystem I to NADPH. The change in electron transport likely inhibits H2O2 generation under high-temperature conditions and contributes to the observed PTRG upshift in rpaA-deficient cells. The importance of the effects of the circadian rhythm regulator on the PTRG is discussed.",
keywords = "RpaA, circadian clock, cyanobacteria, photosynthesis, preferable temperature range for growth",
author = "Hazuki Hasegawa and Tatsuhiro Tsurumaki and Sousuke Imamura and Kintake Sonoike and Kan Tanaka",
note = "Funding Information: We are grateful for the technical advice provided by Dr. Ogawa and Dr. Shimakawa regarding the use of the Dual‐PAM‐100 system (Walz). We also acknowledge Prof. Ikeuchi for providing D1 antibodies and Prof. Y. Takahashi for providing CP1 antibodies. We thank Dr. Yuki Kobayashi for helpful discussions regarding our study, Dr. Ueno for technical advice for analyzing data of the saturation curve, and Dr. Tachikake for advice regarding the P700 absorbance measurements. This work was supported by the Ministry of Education, Culture, Sports, Science and Technology (MEXT), by Grant‐in‐Aid for Scientific Research on Innovative Areas (grant nos. 16H06552 and 16H06553 to KS and 19H04720 to KT), and by the Japan Society for the Promotion of Science (JSPS) KAKENHI (grant nos. 18H02124 to KT and 20J21121 to HH, who is also a JSPS research fellow). Publisher Copyright: {\textcopyright} 2021 Federation of European Biochemical Societies",
year = "2021",
month = may,
doi = "10.1002/1873-3468.14075",
language = "English",
volume = "595",
pages = "1480--1492",
journal = "FEBS Letters",
issn = "0014-5793",
publisher = "Elsevier",
number = "10",
}