湖北农业科学 ›› 2020, Vol. 59 ›› Issue (5): 110-112.doi: 10.14088/j.cnki.issn0439-8114.2020.05.022

• 园艺·特产 • 上一篇    下一篇

低钾胁迫对孔雀草防御性酶活性的影响

王宏宇, 张彦丽, 宗宪春   

  1. 牡丹江师范学院生命科学与技术学院,黑龙江 牡丹江 157012
  • 修回日期:2019-10-04 出版日期:2020-03-10 发布日期:2020-06-05
  • 作者简介:王宏宇(1993-),女,黑龙江嫩江人,在读硕士研究生,研究方向为遗传学分子标记,(电话)18345614441(电子信箱)823093863@qq.com。
  • 基金资助:
    牡丹江师范学院研究生科技创新项目(kjcx2018-99mdjnu)

Effect of low potassium stress on defensive enzyme activity of Tagetes patula

WHANG Hong-yu, ZHANG Yan-li, ZONG Xian-chun   

  1. College of Life Science and Technology,Mudanjiang Normal University,Mudanjiang 157012,Heilongjiang,China
  • Revised:2019-10-04 Online:2020-03-10 Published:2020-06-05

摘要: 采用水培方法,设置5个不同供钾水平0.32、0.22、0.12、0.02、0.00 g/L,研究孔雀草(Tagetes patula L.)防御性酶对低钾胁迫的响应。结果表明,随着钾浓度的逐渐降低,孔雀草过氧化物酶(POD)、超氧化物歧化酶(SOD)、过氧化氢酶(CAT)活性逐渐增高,丙二醛(MDA)含量急剧增加,根质膜透性随钾浓度降低而升高。这说明低钾胁迫下孔雀草的防御性酶活性逐渐增加。

关键词: 孔雀草(Taraxacum patula L.), 低钾胁迫, 防御性酶, 根质膜透性

Abstract: : Hydroponic methods were used to set five different potassium supply levels of 0.32,0.22,0.12,0.02,and 0.00 g/L to study the response of defensive enzymes of peacockgrass (Tagetes patula L.) to low potassium stress. The results showed that with the gradual decrease of potassium concentration, the activities of POD, SOD, and CAT of peacockgrass increased gradually; MDA content increased sharply; root plasma membrane permeability increased with decreasing potassium concentration. It was concluded that the defense enzyme activity of peacockgrass gradually increased under low potassium stress.

Key words: peacockgrass (Tagetes patula L.), low patassium stress, defensive enzymes, root plasma membrane permeability

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