清华大学学报(英文版)
清華大學學報(英文版)
청화대학학보(영문판)
TSINGHUA SCIENCE AND TECHNOLOGY
2003年
4期
481-486
,共6页
李鑫%贾顺姬%简嘉%林孟仪%李骑昂%黄晓春%张超%张荣庆%张贵友
李鑫%賈順姬%簡嘉%林孟儀%李騎昂%黃曉春%張超%張榮慶%張貴友
리흠%가순희%간가%림맹의%리기앙%황효춘%장초%장영경%장귀우
UV-B radiation%reactive oxygen species (ROS)%photosynthetic pigment%UV-absorbing compound%superoxide dismutase (SOD)%peroxidase (POX)
Ligularia intermedia growing at different altitudes were used to investigate the mechanism of ultraviolet (UV)-resistance on physiological aspects in the field.The tests compared the absorbance of the UV-absorbing compound, the content of chlorophyll a, chlorophyll b, and carotenoids, and the activities of peroxidase (POX) and superoxide dismutase (SOD) in Ligularia intermedia growing at three different altitudes on Dongling Mountain in northern China.There were no significant differences between the plants growing at 1160 m and 1820 m.However, all of these factors increased dramatically at 2190 m.The results indicate that the UV-resistance of the plants mainly depends on the mechanism of filtering the radiation and preventing the reactive oxygen species (ROS) damage produced by UV-B.
