Acta Agrestia Sinica

›› 2001, Vol. 9 ›› Issue (1): 34-38.DOI: 10.11733/j.issn.1007-0435.2001.01.006

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Effect of Na2CO3 Stress on Defensive Enzyme System of Puccinellia tenuiflora Seedlings

SUN Guo-rong1, GUAN Yang1, YAN Xiu-feng 2   

  1. 1. Department of Biology, Harbin Normal University, Harbin 150080, China;
    2. Open Research Laboratory of Forest Plant Ecology, Northeast Forestry University, Harbin 150040, China
  • Received:2000-03-23 Revised:2000-09-20 Online:2001-02-15 Published:2001-02-15

盐胁迫对星星草幼苗保护酶系统的影响

孙国荣1, 关旸1, 阎秀峰2   

  1. 1. 哈尔滨师范大学生物系, 哈尔滨150080;
    2. 东北林业大学森林植物生态学开放研究实验室, 哈尔滨150040
  • 作者简介:孙国荣,男,1964年生,1989年武汉大学生物系硕士,现为哈尔滨师范大学生物系教授,从事草地植物生理生态学研究工作十余年,出版专著2部(松嫩盐碱草地植物生理生态学研究,星星草生理生态学研究),发表学术论文60余篇

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Abstract: Under stress of Na2CO3,catalase (CAT) activities of Puccinellia tenuiflora seedlings increase as the stress time goes on,that has significant positive relationship with the stress intensity.Superoxide dismutase (SOD) activities of P.tenuiflora seedlings increase as the stress time increase and along with the stress intensity strengthen to a certain intensity (3.0% Na2CO3) which decreased.Changes of peroxidase (POD) activities of P.tenuiflora seedlings is same as that of SOD activity,However the change range of which is lower than SOD.MDA contents of P.tenuiflora seedlings increased along with the increase of stress time and the stress intensity strengthen.

Key words: Puccinellia tenuiflora seedlings, Catalase, Peroxidase, Superoxide dismutase, MDA content, Na2CO3 stress

摘要： 在盐胁迫下,星星草幼苗过氧化氢酶活性随着胁迫时间的延长而增强,并与盐浓度呈显著正相关。超氧化物歧化酶活性随着胁迫浓度的增强而增强,当超过一定浓度(3.0%Na2CO3)时则趋减弱,尔后随着胁迫时间的延长而增强。过氧化物酶活性的变化规律与超氧化物歧化酶活性相似,但变化幅度较小。丙二醛含量随着胁迫时间的延长和胁迫强度的增强而增加。

关键词: 星星草幼苗, 过氧化氢酶活性, 过氧化物酶活性, 超氧化物歧化酶活性, 丙二醛含量, 盐胁迫

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