Article
Importance of cysteine residues in the C-terminal region of PGRL1 for PSI photoprotection in Chlamydomonas reinhardtii.
Plant physiology - 6 May 2026
Takahashi Hiroko, Okegawa Yuki, Isu Atsuko, Sato Tetsuto, Yoshida Keisuke, Wakabayashi Ken-Ichi, Hisabori Toru, Nishiyama Yoshitaka
Abstract excerpt
Photoinhibition is more pronounced in photosystem II (PSII) than in PSI. However, PSI is sensitive to photoinhibition in mutants of PROTON GRADIENT REGULATION5 (PGR5) and PGR5-LIKE1 (PGRL1) in both Arabidopsis thaliana and Chlamydomonas reinhardtii. In this study, we observed severe PSI photoinhibition in the PGRL1-deficient mutant (pgrl1) of C. reinhardtii under high light for 1 h. Because PSI photoinhibition...
Topics
- Chlamydomonas reinhardtii
- Light
- Cysteine
- Mutation
- Photosystem II Protein Complex
- Amino Acid Sequence
- Photosynthetic Reaction Center Complex Proteins
- Membrane Proteins