[Responses of enzymes in terrestrial plants to enhanced UV-B radiation].
With the destruction of ozone layer, ultraviolet-B (UV-B, 280 to approximately 320nm) radiation has being enhanced at the earth's surface. The energy of UV-B irradiation is far higher than that of visible light, which could be absorbed by biomacromolecules such as protein and nuclei acid. Enzyme is a sort of protein catalyzing the biochemical processes, and its content and activity in plant have strong responses to enhanced UV-B radiation. This paper summarized the research advances in the effects of enhanced UV-B radiation on the key enzymes, mainly including antioxidant enzymes, ribulose-1, 5-diphosphoscarboxylase, nitrate reductase and glutamine synthetase in terrestrial plants. Some suggestions for future research in this field were put forward.
Yao
Xiaoqin
X
Ecological Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China. yaoxiao301@126.com
Liu
Qing
Q
D009195:Peroxidase / Q000378:metabolism; D010944:Plants / Q000201:enzymology* / Q000528:radiation effects*; D012273:Ribulose-Bisphosphate Carboxylase / Q000378:metabolism*; D013482:Superoxide Dismutase / Q000378:metabolism*; D014466:Ultraviolet Rays
D009195:Peroxidase; D013482:Superoxide Dismutase; D012273:Ribulose-Bisphosphate Carboxylase