... We investigate influence of UV radiation on the photosynthetic apparatus of plants. ... Influence UV irradiation on kinetic of photoinduced of electronic transport and paramagnetic properties isolated chloroplasts and leaves of higher plants is investigated. ... It is observed that in the darkness irradiated leaves and isolated chloroplast change the form of dark signal EPR 2, caused by accumulation of new stable radicals with g ~ 2,004 is observed; ?Н = 8 Qs. ... 2007 Biophysics dep., ...