中文摘要：

综述了UV-B辐射增强对植物叶片、茎、根、果实以及籽粒中糖含量影响的研究现状与动态,从生理学角度分析了UV-B辐射对植物糖含量和糖代谢相关的一些重要反应及其影响植物糖含量和糖代谢的关键酶的响应,并从植物的光合碳固定、糖的合成与分解等方面阐述了UV-B影响糖含量及糖代谢的可能机理。展望了今后紫外辐射增强对植物糖代谢影响的研究重点和研究方向。

英文摘要：

This paper summarized the research progress about the effects of UV-B radiation on the sugar content in plant leaf,stem,root,fruit,and grain. Some critical reactions and enzymes relevant to plant sugar metabolism were analyzed,and the possible mechanisms of the effects of UV-B on them were demonstrated from the aspects of photosynthetic carbon fixation,and sugar synthesis and decomposition. Further research directions in this field were prospected.