低温胁迫下紫萼藓科植物保护酶活性的变化  

Changes of Cell Defense Enzyme Activity in Grimmiaceae under Low Temperature Stress

作　　者：张晗[1,2] 高永超[3] 沙伟[2] 郑琦[2] 李汝玉[1] 姚凤霞[1] 许金芳[1] 王东健[1] 

机构地区：[1]山东省农业科学院作物研究所,山东济南250100 [2]齐齐哈尔大学生命科学与工程学院,黑龙江齐齐哈尔161006 [3]山东省科学院中日友好生物技术研究中心,山东济南250014

出　　处：《山东农业科学》2009年第2期23-26,共4页Shandong Agricultural Sciences

基　　金：黑龙江省教育厅骨干教师资助项目;黑龙江省博士后启动基金

摘　　要：低温胁迫试验结果表明,东亚砂藓与毛尖紫萼藓的过氧化物酶(POD)和超氧化物歧化酶(SOD)对低温的适应机制不同,东亚砂藓的POD活性比毛尖紫萼藓的变化幅度大,而毛尖紫萼藓的SOD活性比东亚砂藓的变化幅度大。而且均表现为处理前期活性变化幅度较大,低温胁迫处理的酶活性要高于对照;后期则趋于平稳,与对照差异较小。The experimental results showed that POD and SOD in Grimmia pilifera and Racomitrium canescens showed different adaptable mechanisms to low temperature. Racomitrium canesces had greater variation in the activity of POD and less variation in SOD activity than Grimmia pilifera. The changing amplitude of the POD and SOD activities were larger at prephase of treatment and the enzyme activities of the low - temperature treatment were higher than those of the control; but at the anaphase, the changes of the enzyme activities were smoother and there were no significant differences among the treatments.

关 键 词：低温胁迫 毛尖紫萼藓 东亚砂藓 保护酶 

分 类 号：Q945.78[生物学—植物学] Q949.352