Induction of oxidative stress and GPX-like protein activation in tomato plants after mechanical stimulation

被引：21

作者：

Depège, N ^{[1
]}

Varenne, M ^{[1
]}

Boyer, N ^{[1
]}

机构：

[1] Univ Blaise Pascal, Lab PIAF, F-63177 Clermont Ferrand, France

来源：

PHYSIOLOGIA PLANTARUM | 2000年 / 110卷 / 02期

关键词：

D O I：

10.1034/j.1399-3054.2000.110210.x

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

In Lycopersicon esculentum Mill. (cv. VFN8), mechanical stimulation induced a rapid and transient increase of hydrogen peroxide (H2O2), apart of an oxidative burst. The reaction was followed by an antioxidative response, with the involvement of phospholipid hydroperoxide glutathione peroxidase (PHGPX)-like protein (EC 1.11.1.9), Induction of expression of two putative PHGPX genes was observed in rubbed internodes. Tot characterize the importance of this antioxidant gene, enzymatic activities of glutathione peroxidase (GPX) and PHGPX were measured, respectively, with H2O2 and hydroperoxide lipid as oxidant, Only PHGPX activities were induced by the mechanical treatment, suggesting a major role of PHGPX in the mechanisms of antioxidant defence in plant.

引用

页码：209 / 214

页数：6

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