湖北农业科学 ›› 2026, Vol. 65 ›› Issue (4): 44-47.doi: 10.14088/j.cnki.issn0439-8114.2026.04.008

• 育种·栽培 • 上一篇    下一篇

硫酸铜胁迫对小麦抗氧化酶活性及丙二醛含量的影响

温红霞1,2, 陈艺博1,2, 吕维娜1,2, 李影1,2, 高海涛1,2   

  1. 1.洛阳市农林科学院,河南 洛阳 471022;
    2.河南省抗旱节水小麦育种工程技术研究中心,河南 洛阳 471022
  • 收稿日期:2025-12-22 出版日期:2026-04-25 发布日期:2026-05-06
  • 通讯作者: 高海涛(1972-),男,河南商丘人,研究员,硕士,主要从事高产优质小麦新品种选育研究,(电话)13937966626(电子信箱)lynkyght@126.com。
  • 作者简介:温红霞(1979-),女,河南扶沟人,副研究员,主要从事高产优质小麦新品种选育研究,(电话)16637998598(电子信箱)704603015@qq.com。
  • 基金资助:
    国家小麦产业技术体系(CAR-03-76); 河南省农业(小麦)良种联合攻关项目(2022010101); 河洛青年人才托举工程(2025HLTJ11)

Effects of copper sulfate stress on antioxidant enzyme activities and malondialdehyde content in wheat

WEN Hong-xia1,2, CHEN Yi-bo1,2, LYU Wei-na1,2, LI Ying1,2, GAO Hai-tao1,2   

  1. 1. Luoyang Academy of Agriculture and Forestry Sciences, Luoyang 471022,Henan,China;
    2. Henan Provincial Engineering Research Center for Drought-Resistant and Water-Saving Wheat Breeding, Luoyang 471022, Henan,China
  • Received:2025-12-22 Published:2026-04-25 Online:2026-05-06

摘要: 为探究Cu2+对小麦生长发育的影响,以洛麦58、周麦36和新麦45为材料,采用盆栽土培法,设置0、50、100、150、200 mg/kg 5个铜离子浓度梯度,研究不同浓度Cu2+胁迫下3个小麦品种叶片和根系中丙二醛(MDA)含量及超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)活性的变化。结果表明,随铜离子浓度升高,3个品种叶片和根系中MDA含量均逐渐上升;SOD、POD、CAT活性则均呈先升高后降低的趋势。这说明铜胁迫对小麦叶片和根系均造成氧化损伤,且洛麦58的MDA含量增幅最小,抗氧化酶活性维持较高水平,表明其抗铜胁迫能力强于周麦36和新麦45。

关键词: 小麦, 铜离子, 丙二醛(MDA), 抗氧化酶

Abstract: To investigate the effects of Cu2+ on wheat growth and development, three wheat varieties (Luomai 58, Zhoumai 36, and Xinmai 45) were used as materials in a pot soil culture experiment. Five copper ion concentration gradients (0, 50, 100, 150, 200 mg/kg) were set up to study the changes in malondialdehyde (MDA) content and the activities of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) in the leaves and roots of the three wheat varieties under different concentrations of Cu2+ stress. The results showed that with increasing copper ion concentration, the MDA content in the leaves and roots of all three varieties gradually increased. The activities of SOD, POD, and CAT all initially increased and then decreased. This indicated that copper stress caused oxidative damage to both wheat leaves and roots. Luomai 58 exhibited the smallest increase in MDA content and maintained relatively high levels of antioxidant enzyme activities, suggesting that its tolerance to copper stress was stronger than that of Zhoumai 36 and Xinmai 45.

Key words: wheat, copper ion, malondialdehyde(MDA), antioxidant enzyme

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