河北大学学报(自然科学版) ›› 2020, Vol. 40 ›› Issue (4): 415-420.DOI: 10.3969/j.issn.1000-1565.2020.04.012

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PEG 6 000胁迫条件下华北八宝愈伤组织中抗氧化酶活性的变化

黄航君,李依,马林喜,马伟伟,王俊丽   

  • 收稿日期:2019-10-16 出版日期:2020-07-25 发布日期:2020-07-25
  • 通讯作者: 王俊丽(1964—),女,河北新乐人,中央民族大学教授,博士生导师.主要从事植物细胞工程及资源利用研究.E-mail:wangjunli1698@163.com
  • 作者简介:黄航君(1994—),女,广东茂名人,中央民族大学在读硕士研究生,主要从事生物资源保护和利用方面研究. E-mail:huanghangjun13@126.com
  • 基金资助:
    国家重点研发计划项目(2018YFD0201300);一流大学一流学科建设项目(Yldxxk201819)

Changes of antioxidant enzyme activity in callus of Hylotelephium tatarinowii under PEG 6 000 stress

HUANG Hangjun, LI Yi, MA Linxi, MA Weiwei, WANG Junli   

  1. College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
  • Received:2019-10-16 Online:2020-07-25 Published:2020-07-25

摘要: 以华北八宝Hylotelephium tatarinowii(Maxim.)H. Ohba愈伤组织为材料,采用不同质量分数的聚乙二醇(PEG)6 000进行胁迫处理,分别测定愈伤组织中过氧化物酶(POD)、超氧化物歧化酶(SOD)和过氧化氢酶(CAT)的活性变化,通过非变性聚丙烯凝胶电泳分析POD、SOD和酯酶(EST)的同工酶表达特征.研究结果表明,在PEG 6 000质量分数为0.5%~5.0%时,随着质量分数的增加和胁迫时间的延长,POD、SOD和CAT的活性逐渐增强,且愈伤组织生长良好;当PEG 6 000质量分数为8.0%时,随着胁迫时间的延长,POD、SOD和CAT酶活性急剧下降.

关键词: 华北八宝, 愈伤组织, PEG, 胁迫, 酶活性

Abstract: Callus of Hylotelephium tatarinowii(Maxim.)H. Ohba was treated by different concentrations of polyethylene glycol(PEG 6 000)for stress treatment in the study. The activity of peroxidase(POD), superoxide dismutase(SOD)and catalase(CAT)in callus was measured, and isozyme expressions of POD, SOD and esterase(EST)were analyzed by non-denatured polypropylene gel electrophoresis. The activity of POD, SOD and CAT increased gradually with the increase of concentration and the prolongation of stress time when the concentration of PEG 6 000 was 0.5%—5.0%, and the growth state of callus was normal. When the concentration of PEG 6 000 was 8%, the activity of POD, SOD and CAT decreased sharply with the prolongation of stress time.

Key words: Hylotelephium tatarinowii(Maxim.)H. Ohba, callus, PEG, stress, enzyme activity

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