UV-B RADIATION EFFECTS ON ELECTRON-TRANSPORT REACTIONS IN BIOMATERIALS
2022
Nasibova, A.N.
In the present work studied short-term exposure of UV radiation in the B-band on the state of the photosynthetic apparatus in the leaves of two-week-old seedlings of Vicia faba beans and in the chloroplasts of Pisum sativum peas. The increase in pre-irradiation effects in the subsequent dark period indicates the accumulation of active products, which then gradually modify the electron-transport reactions. Experiments show that reactive oxygen species may be such products. The accumulation of reactive oxygen species leads to the gradual destruction of RBF - carboxylase, and then other components of the membrane apparatus of photosynthesis.
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