Life on earth depends on the solar energy which is fixed in the biosphere by photosynthesis in plants which have pigments that harvest sunlight. Thus, plants are constantly also exposed to ultraviolet irradiation. In plants wide inter- and intraspecific differences have been reported in response to UV radiation with respect to growth, production of dry matter and biochemical changes. The direct effects of UV radiations on plant cells are mostly damaging, because UV photons have enough energy to create lesions in important UV-absorbing biomolecules. Also, the present work ascertains that...