| 腐胺对盐胁迫下小麦幼苗根中活性氧代谢的影响 |
| |
| 引用本文： | 马瑛.腐胺对盐胁迫下小麦幼苗根中活性氧代谢的影响[J].陕西理工学院学报(自然科学版),2012,28(4):64-69. |
| |
| 作者姓名： | 马瑛 |
| |
| 作者单位： | 安康学院农学与生命科学学院,陕西安康,725000 |
| |
| 摘 要： | 以小麦(T.aestivm L.)“陇春23号”为实验材料,测定了外源腐胺(Put)对NaCl胁迫条件下,小麦根细胞的膜透性、丙二醛(MDA)含量、活性氧(ROS)的含量、抗氧化酶活性,结果表明外源Put处理使NaCl胁迫下小麦根中细胞膜透性降低,MDA含量减少,抗氧化酶(CAT,SOD,APX,POD)的活性升高,O2-的产生减少,但H2O2的含量升高.进一步测定二胺氧化酶(DAO)和多胺氧化酶(PAO)的活性,结果DAO和PAO的活性升高,表明外源腐胺能通过提高抗氧化酶的活性减轻NaCl对小麦根的氧化伤害,但H2O2在此实验中不是对小麦根起伤害作用,可能作为信号分子起作用.
|
| 关 键 词： | 腐胺 抗氧化酶 活性氧 盐胁迫 |
Effects of exogenous application of putrescine on active oxygen metabolism in the wheat roots under salt stress |
| |
| MA Ying.Effects of exogenous application of putrescine on active oxygen metabolism in the wheat roots under salt stress[J].Journal of Shananxi University of Technology:Natural Science Edition,2012,28(4):64-69. |
| |
| Authors: | MA Ying |
| |
| Institution: | MA Ying(School of Agronomy and Life Sciences,Ankang University,Ankang 725000,China) |
| |
| Abstract: | The effect of exogenous application of putrescine on membrane permeability,content of MDA,active oxygen contents,and antioxidase activity in wheat roots under salt stress were studied.The results showed that under salt stress,exogenous putrescine reduced the membrane permeability and content of MDA.The activities of CAT,SOD,APX and POD,the conten of H2O2 were increased,while the content of O·-2were decreased.The results suggest that exogenous application of putrescine could alleviate salt-induced membrane injury of wheat roots by increasing the antioxidase activity.Furthermore,the activities of DAO and PAO were studied.Exogenous application of putrescine increased the activities of DAO and PAO.It implied that H2O2 was not acted as a injury factor in this experiment,but as a signaling molecule. |
| |
| Keywords: | putrescine antioxidase active oxygen salt stress |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
