Recent measurements of ozone levels have led to concern that the stratospheric ozone
layer is being depleted as a result of contamination with man-made chlorofluorocarbons …

Light drives photosynthesis, but at the same time, light also damages the photosynthesis
machinery. The damaging reaction is termed photoinhibition, and its target is Photosystem II …

Photoinhibition of PSII occurs at the same quantum efficiency from very low to very high light,
which raises a question about how important is the rate of photosynthetic electron transfer in …

We studied the effect of UV-B radiation (280− 320 nm) on the donor-and acceptor-side
components of photosystem II in the cyanobacterium Synechocystis sp. PCC 6803 by …

Illumination of isolated thylakoid membranes by UV-B light does not result in singlet oxygen
production but induces free radicats, mainly hydroxyl and carbon-centered (methyl-like) …

D. Quinones E. Pigments III. UV-B Effects on Net Photosynthesis IV. UV-B Effects on PSII A.
The Structure and Function of PSII B. Inhibition of PSII Electron Transport by UV-B 1. The …

Current ambient UV-B levels can significantly depress productivity in aquatic habitats,
largely because UV-B inhibits several steps of photosynthesis, including the photooxidation …

The effects of cadmium (from 7.5 to 75μM) on chloroplasts of rice were studied at the
structural and biochemical level. Loss of pigments, reduction of thylakoids and decrease in …

In photosynthetic organisms, impairment of the activities of enzymes in the Calvin cycle
enhances the extent of photoinactivation of Photosystem II (PSII). We investigated the …

In this study, the effects of UV-B radiation on the isoflavones accumulation, physiological
and nutritional quality, water status, and characteristics of proteins in germinated soybeans …