首页> 外文期刊>African Journal of Biotechnology >Activities of some enzymes associated with oxygen metablolism, lipid peroxidation and cell permeability in dehydrated Malus micromalus seedlings
【24h】

Activities of some enzymes associated with oxygen metablolism, lipid peroxidation and cell permeability in dehydrated Malus micromalus seedlings

机译:脱水苹果树幼苗中与氧代谢,脂质过氧化和细胞通透性相关的某些酶的活性

获取原文
       

摘要

Measurements were made on the relative water content, cell permeability, superoxide dismutase (SOD) activity, catalase (CAT) activity and malondialdehyde (MDA) content in?Malus micromalus?seedling during dehydration?in vitro?in whole seedling and during dehydration in culture of different PEG 6000 concentration. The results indicated? that SOD and CAT activities increased during dehydration from 0 to 3 h and decreased after dehydration for 3 h; MDA content decreased before 3 h dehydration and the MDA content and cell permeability increased significantly after 3 h in various treatments of dehydration (in vitro?and in whole seedling). SOD and CAT activities in 20 days seedlings were higher than those in 10 days seedlings whereas the MDA content and cell permeability in 20 days seedlings were lower than those in 10 days seedlings. In 20 days seedlings during dehydration?in vitro,?SOD and CAT activities in leaves were higher than those in root and the latter was higher than those in stem. However, the MDA content and cell permeability in leaves were lower than those in root which in turn were lower than those in stem. Significant correlations and regressions exist among the changes observed in the SOD activity, CAT activity, MDA content, cell permeability and the relative water content.
机译:测量了整个脱水过程中和整个培养过程中脱水过程中“海棠”幼苗的相对含水量,细胞渗透性,超氧化物歧化酶(SOD)活性,过氧化氢酶(CAT)活性和“丙二醛”(MDA)含量。 PEG 6000浓度不同结果表明? SOD和CAT活性在脱水过程中从0到3 h增加,而在脱水3 h后降低;在各种脱水处理(体外和整个幼苗)中,脱水3 h前MDA含量降低,而3 h后MDA含量和细胞通透性显着增加。 20天幼苗的SOD和CAT活性高于10天幼苗,而20天幼苗的MDA含量和细胞通透性低于10天幼苗。在脱水的20天幼苗中,叶片的SOD和CAT活性高于根部,而后者高于茎部。然而,叶片中的MDA含量和细胞通透性低于根部,而根部则低于茎部。 SOD活性,CAT活性,MDA含量,细胞通透性和相对水含量的变化之间存在显着的相关性和回归性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号