Liu Zhou-li, He Xing-yuan, Chen Wei
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
Ying Yong Sheng Tai Xue Bao. 2009 Jan;20(1):40-4.
By using hydroponics, the growth and physiological characteristics of Lonicera japonica at different concentrations (0, 5, 10, 25, and 50 mg x L(-1)) of cadmium (Cd) were studied. The results showed that compared with the control, Cd stress had lesser effects on the growth of L. japonica. Within the range of test Cd concentrations, L. japonica biomass had less difference (P > 0.05) with the control, and at low concentration of Cd (5 mg x L(-1)), the total biomass and the biomasses of leaf and root were increased by 1.25%, 2.88 and 2.33%, respectively, illustrating that L. japonica had stronger resistance against Cd. Under low concentration Cd stress, the water content and soluble protein content in plant organs had some decrease, while the malondialdehyde (MDA) content in root and leaf increased by 51.90% and 23.07%, respectively, leaf chlorophyll and carotenoid contents increased by 15.87% and 24.89%, respectively, and superoxide dismutase (SOD) activity increased significantly. With increasing Cd concentration, the chlorophyll and carotenoid contents and SOD activity decreased to some extent.
采用水培法，研究了不同镉（Cd）浓度（0、5、10、25和50 mg·L⁻¹）下忍冬的生长和生理特性。结果表明，与对照相比，镉胁迫对忍冬生长的影响较小。在试验镉浓度范围内，忍冬生物量与对照差异较小（P>0.05），且在低镉浓度（5 mg·L⁻¹）下，总生物量以及叶和根的生物量分别增加了1.25%、2.88%和2.33%，说明忍冬对镉具有较强的抗性。在低浓度镉胁迫下，植物器官中的含水量和可溶性蛋白质含量有所下降，而根和叶中的丙二醛（MDA）含量分别增加了51.90%和23.07%，叶片叶绿素和类胡萝卜素含量分别增加了15.87%和24.89%，超氧化物歧化酶（SOD）活性显著增加。随着镉浓度的升高，叶绿素和类胡萝卜素含量以及SOD活性均有一定程度的下降。
