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PCDD/Fs-induced oxidative damage and antioxidant system responses in tobacco cell suspension cultures
Zhang, Baoqin1,2; Zhang, Haijun1; Jin, Jing1; Ni, Yuwen1; Chen, Jiping1
关键词Pcdd/fs Tobacco Bright Yellow 2 Cells Antioxidant Enzymes Oxidative Stress Phytohormones
刊名CHEMOSPHERE
2012-08-01
DOI10.1016/j.chemosphere.2012.03.085
88期:7页:798-805
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Life Sciences & Biomedicine
类目[WOS]Environmental Sciences
研究领域[WOS]Environmental Sciences & Ecology
关键词[WOS]LIPID-PEROXIDATION ; ORGANIC-COMPOUNDS ; STRESS ; PLANTS ; ENZYMES ; DIOXIN ; PHYTOHORMONES ; EXPOSURE ; ROOTS ; ACID
英文摘要Polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) are ubiquitous contaminants and can be considerably accumulated by natural plants. In order to elucidate the biochemical and physiological responses of plant to PCDD/Fs, tobacco Bright Yellow-2 (BY-2) cells were selected as model plant and treated with time- and concentration-dependent PCDD/Fs. The toxic effect and oxidative stress caused by PCDD/Fs were evident, which could be indicted by the reduction in fresh mass, the increase in malondialdehyde (MDA) content, and the damage of tobacco cell ultrastructure. PCDD/Fs tolerance was correlated with changes in antioxidant system and hormones of tobacco cells. Superoxide dismutase (SOD) and peroxidase (POD) exhibited peak enzyme activities at the PCDD/Fs concentration of 1000 ng WHO98-TEQ g(-1) fresh weight. Glutathione reductase (GR) enzyme activity increased monotonically at high level PCDD/Fs, but the activity of catalase (CAT) was only slightly affected at all treatment. Meanwhile, the exposure to PCDD/Fs resulted in the changes of hormones content. With the increase of exposure concentration of PCDD/Fs, the levels of indole-3-acetic acid (IAA) and abscisic acid (ABA) increased, whereas the concentration of jasmonates (JAs) decreased. The above results suggest that tobacco cells had the ability to cope with the oxidative stress induced by low concentration of PCDD/Fs through increasing the activities of antioxidant enzymes and alternating plant hormones levels. However, oxidative stress and toxicity would burst out when plant cells were exposed to the high levels of PCDD/Fs. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.
语种英语
WOS记录号WOS:000305600500006
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/143030
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
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Zhang, Baoqin,Zhang, Haijun,Jin, Jing,et al. PCDD/Fs-induced oxidative damage and antioxidant system responses in tobacco cell suspension cultures[J]. CHEMOSPHERE,2012,88(7):798-805.
APA Zhang, Baoqin,Zhang, Haijun,Jin, Jing,Ni, Yuwen,&Chen, Jiping.(2012).PCDD/Fs-induced oxidative damage and antioxidant system responses in tobacco cell suspension cultures.CHEMOSPHERE,88(7),798-805.
MLA Zhang, Baoqin,et al."PCDD/Fs-induced oxidative damage and antioxidant system responses in tobacco cell suspension cultures".CHEMOSPHERE 88.7(2012):798-805.
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