Function of ROC4 in the efficient repair of photodamaged photosystem II in Arabidopsis.

  title={Function of ROC4 in the efficient repair of photodamaged photosystem II in Arabidopsis.},
  author={Wenhe Cai and Jinfang Ma and Jinkui Guo and Lixin Zhang},
  journal={Photochemistry and photobiology},
  volume={84 6},
ROC4 is the only cyclophilin in the chloroplast stroma. Here, we used the T-DNA knockout mutant of roc4 to study the physiological role of ROC4 in vivo in Arabidopsis thaliana. Our results showed that ROC4 is not required for the biogenesis and functional operation of photosystem II (PSII). However, growth in greenhouse and PSII activity, as detected by photoinhibition measurements showed increased sensitivity to high light irradiance in the mutant. In the presence of chloroplast protein… CONTINUE READING


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