Arsenic triggers the nitric oxide (NO) and S-nitrosoglutathione (GSNO) metabolism in Arabidopsis

被引：135

作者：

Leterrier, Marina ^{[1
]}

Airaki, Morad ^{[1
]}

Palma, Jose M. ^{[1
]}

Chaki, Mounira ^{[1
]}

Barroso, Juan B. ^{[1
]}

Corpas, Francisco J. ^{[1
]}

机构：

[1] CSIC, Dept Bioquim Biol Celular & Mol Plantas, Estac Expt Zaidin, E-18008 Granada, Spain

来源：

ENVIRONMENTAL POLLUTION | 2012年 / 166卷

关键词：

Arsenic; Nitric oxide; Nitrosative stress; Oxidative stress; S-nitrosoglutathione; SUNFLOWER HELIANTHUS-ANNUUS; INDUCED OXIDATIVE STRESS; NITROSATIVE STRESS; ANTIOXIDANT SYSTEM; ABIOTIC STRESS; PEA-PLANTS; TOLERANCE; REDUCTASE; ACCUMULATION; CADMIUM;

D O I：

10.1016/j.envpol.2012.03.012

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Environmental contamination by arsenic constitutes a problem in many countries, and its accumulation in food crops may pose health complications for humans. Reactive oxygen species (ROS) and reactive nitrogen species (RNS) are involved at various levels in the mechanism of responding to environmental stress in higher plants. Using Arabidopsis seedlings exposed to different arsenate concentrations, physiological and biochemical parameters were analyzed to determine the status of ROS and RNS metabolisms. Arsenate provoked a significant reduction in growth parameters and an increase in lipid oxidation. These changes were accompanied by an alteration in antioxidative enzymes and the nitric oxide (NO) metabolism, with a significant increase in NO content, S-nitrosoglutathione reductase (GSNOR) activity and protein tyrosine nitration as well as a concomitant reduction in glutathione and S-nitrosoglutathione (GSNO) content. Our results indicate that 500 mu M arsenate (AsV) causes nitro-oxidative stress in Arabidopsis, being the glutathione reductase and the GSNOR activities clearly affected. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：136 / 143

页数：8

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