Singlet oxygen production in herbicide-treated photosystem II.

  title={Singlet oxygen production in herbicide-treated photosystem II.},
  author={Christian Fufezan and A William Rutherford and Anja Krieger-Liszkay},
  journal={FEBS letters},
  volume={532 3},
Photo-generated reactive oxygen species in herbicide-treated photosystem II were investigated by spin-trapping. While the production of .OH and O2-* was herbicide-independent, 1O2 with a phenolic was twice that with a urea herbicide. This correlates with the reported influence of these herbicides on the redox properties of the semiquinone QA-* and fits with the hypothesis that 1O2 is produced by charge recombination reactions that are stimulated by herbicide binding and modulated by the nature… CONTINUE READING