The reactive oxygen species are involved in resistance responses of wheat to the Russian wheat aphid

被引：145

作者：

Moloi, Makoena J.

van der Westhuizen, Amie J.

机构：

[1] Univ Free State, Fac Nat & Agr Sci, Dept Plant Sci, ZA-9866 Phuthaditjhaba, South Africa

[2] Univ Orange Free State, Fac Nat & Agr Sci, Dept Plant Sci, ZA-9300 Bloemfontein, South Africa

来源：

JOURNAL OF PLANT PHYSIOLOGY | 2006年 / 163卷 / 11期

基金：

新加坡国家研究基金会;

关键词：

Diuraphis noxia; hydrogen peroxide; NADPH oxidase; reactive oxygen species; resistance; Russian wheat aphid; Triticum aestivum; wheat;

D O I：

10.1016/j.jplph.2005.07.014

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The effect of Russian wheat aphid (RWA), Diuraphis noxia (Mordvilko), infestation on the hydrogen peroxide (H2O2) content and NADPH oxidase (EC 1.6.3.1) activity was studied in the resistant (cv. Tugela DN) and near-isogenic susceptible (cv. Tugela) wheat (Triticum aestivum L.). The objective of this study was to investigate the involvement of the reactive oxygen species (ROS) during the resistance responses against the RWA. Infestation significantly induced an early accumulation of the H2O2 and increase of NADPH oxidase activity to higher levels in the resistant than susceptible plants. Results of inhibitory studies using diphenylene iodonium (DPI), a suicide inhibitor of NADPH oxidase, strongly suggested a possible signalling role for H2O2 during RWA resistance response by activation of downstream defence enzymes [intercellular peroxidase (EC 1.11.1.7) and beta-1,3-glucanase (EC 3.2.1.39)]. (c) 2005 Elsevier GmbH. All rights reserved.

引用

页码：1118 / 1125

页数：8

共 43 条

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