Light-induced absorbance changes due to photosystems 1 and 2 in spinach chloroplasts at minus 50 degrees C.

@article{Amesz1975LightinducedAC,
  title={Light-induced absorbance changes due to photosystems 1 and 2 in spinach chloroplasts at minus 50 degrees C.},
  author={Jan Amesz and Bart G de Grooth},
  journal={Biochimica et biophysica acta},
  year={1975},
  volume={376 2},
  pages={298-307}
}
Absorbance changes in the region 500-565 nm and at 702 nm, brought about by excitation of Photosystems 1 and 2, respectively, were measured in spinach chloroplasts at minus 50 degrees C. Either dark-adapted chloroplasts were used or chloroplasts preilluminated with a number of short saturating flashes just before cooling. Both photosystems were found to cause a light-induced increase of absorbance at 518 nm (due to "P518"). The System 1-induced change was not affected by pre-illumination. It… CONTINUE READING