Ecological significance of enhanced UV-B radiation in secondary metabolism EFFECTS OF REACTIVE OXYGEN SPECIES ON UV-B-INDUCED ETHYLENE PRODUCTION IN LEAVES OF MAIZE SEEDLINGS Effects of Rare Earth Elements Adding on the Antioxidant Enzymes of Wheat under Enhanced Ultraviolet-B Radiation Influence of enhanced ultraviolet-B radiation on photosynthetic physiologies and ultrastructure of leaves in two different resistivity rice cultivars Effect of elevated ultraviolet-B (UV-B) radiation on CH4 emission in herbicide resistant transgenic rice from a paddy soil Effects of UV-B radiation direction on physiological integration in Trifolium repens Advance in research on the response of plants to the increased Ultraviolet-B radiation The effect of enhanced Ultraviolet-B radiation on xylophyte Research Advances about the Defense Mechanisms for Plants to Enhanced Ultraviolet-B Radiation Effects of He-Ne Laser and Enhanced UV-B Radiation on Chloroplast Pigments in Wheat Seedlings