Nickel-induced oxidative damage and antioxidant responses in Zea mays shoots

被引：128

作者：

Baccouch, S ^{[1
]}

Chaoui, A ^{[1
]}

El Ferjani, E ^{[1
]}

机构：

[1] Fac Sci Bizerte, Lab Biol & Physiol Cellulaire, Zarzouna 7021, Tunisia

来源：

PLANT PHYSIOLOGY AND BIOCHEMISTRY | 1998年 / 36卷 / 09期

关键词：

antioxidant activity; lipid peroxidation; nickel stress; oxidative damage; Zea mays;

D O I：

10.1016/S0981-9428(98)80018-1

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Zea mays (cv. LG 23/01) seedlings precultured in hydroponic culture for seven days were treated with 250 mu M NiCl2 for five days. Several metabolic parameters representative of oxidative damage and antioxidant activity in shoots were regularly studied after the metal treatment. Two days after Ni-application, membrane lipid peroxidation intensified. A stimulation of guaiacol peroxidase (EC 1.11.1.7) activity was recorded. Analysis of the profile of anionic isoenzymes of guaiacol peroxidase revealed quantitative changes occurring during Ni-exposure. Superoxide dismutase (EC 1.15.1.1) activity was stimulated early and transiently. Later, the activities of ascorbate peroxidase (EC 1.11.1.11), catalase (EC 1.11.1.6) and glutathione reductase (EC 1.6.4.2) increased. The results are discussed with regard to nickel-induced oxidative stress and potential antioxidant reactions. (C) Elsevier, Paris.

引用

页码：689 / 694

页数：6

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