Abstract
Plants are photosynthetic organisms that depend on sunlight for energy. Besides photosynthetically active radiation (PAR; 400-700 nm), plants are exposed to ultraviolet radiation, which consists of UV-C (below 280 nm), UV-B (280-320 nm) and UV-A (320-400 nm). Plants respond differently to exposure to low or high doses of ultraviolet light, either by stimulating protective mechanisms, or by activating recovery mechanisms to cope with various types of stress. (Research purpose) The research purpose is in providing an overview of the reactions of plants to ultraviolet radiation, make a relationship between the different ranges of ultraviolet radiation, radiation doses and the effect on plants. (Materials and methods) The article presents an analysis of domestic and foreign articles on the effectiveness of plant irradiation with ultraviolet radiation. (Results and discussion) Authors examined the effects of various ranges of ultraviolet radiation on plants. It was found that some properties of plants can be enhanced with small doses of UV-C, but UV-C strongly inhibits plant growth. Exposure to UV-B causes morphological and anatomical changes in plants: an increase in branching, a decrease in internodes, twisting of leaves, a decrease in leaf area, an accumulation of screening pigments, thickening of leaves, redistribution of chlorophyll. The effects of UV-B and UV-C also affect the volatiles emitted by aromatic plants. Ultraviolet-A can improve the nutritional qualities of green crops without adversely affecting plant growth. (Conclusions) It was found that ultraviolet radiation, depending on the range, has both a harmful effect on plants and a beneficial one. It was found that with certain doses of ultraviolet radiation, the necessary qualities and properties of plants could be obtained.
Published Version
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