Inhibition of Photosystem II by UV-B-Radiation
نویسنده
چکیده
The effect o f UV-B-radiation on PSII activity o f spinach chloroplasts was analyzed by m ea suring the integrity of the herbicide-binding protein (HBP 32), by measurement o f fluorescence induction in the presence o f Diuron (DC M U ), and by m athem atical analysis o f the fluorescence induction curves. It was shown that UV-B inactivates the PSII a-centers but not PSII ^-centers. However, the possibility cannot be excluded that in addition the donor site o f PSII near the reaction center is attacked by UV-B-radiation.
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تاریخ انتشار 2013