您好，欢迎访问山西省农业科学院 机构知识库！
山西省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

The defense potential of glutathione-ascorbate dependent detoxification pathway to sulfur dioxide exposure in Tagetes erecta

文献类型： 外文期刊

作者： Wei, Aili 1 ; Fu, Baochun 2 ; Wang, Yunshan 2 ; Li, Rui 1 ; Zhang, Chao 2 ; Cao, Dongmei 2 ; Zhang, Xiaobing 1 ; Duan, Ji 1 ;

作者机构： 1.Taiyuan Normal Univ, Dept Biol, Taiyuan 030031, Peoples R China

2.Shanxi Acad Agr Sci, Inst Hort, Taiyuan 030031, Peoples R China

3.Shanxi Univ, Sch Life Sci, Taiyuan 030006, Peoples R China

关键词： SO2;Tagetes erecta;GSH;AsA;detoxification

期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：6.291； 五年影响因子：6.393 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Sulfur dioxide (SO2) exposure is associated with increased risk of various damages to plants. However, little is known about the defense response in ornamental plants. In this study, an artificial fumigation protocol was carried out to study the defense potential of the glutathione (GSH)-ascorbate (AsA) dependent detoxification pathway to SO2 exposure in Tagetes erecta. The results show that when the plants were exposed to different doses of SO2 (0, 15, 30, 50 or 80 mg m(-3)) for different times (6, 12, 18, 24 or 33 h), SO2 induced oxidative stress was confirmed by the increased hydrogen peroxide (H2O2), malondialdehyde (MDA) and relative conductivity of membrane (RC) in a dose-dependent manner for different exposure times. However, the increased levels for H2O2, MDA and RC were not significant vis-a-vis the control when SO2 doses and exposure times were lower than 15 mg m-3/33 h, 30 mg m(-3)/24 h or 50 mg m(-3)/12 h (p > 0.05). The results could be explained by the increases in the content of reduced form of glutathione (GSH), total glutathione (TGSH), ascorbate (AsA), ratio of GSH/GSSG (oxidized form of glutathione), activities of ascorbate peroxidase (APX), glutathione peroxidase (GPX), glutathione reductase (GR) and glutathione S-transferases (GST). On the other hand, exposure to higher doses of SO2 and longer exposure times, the values of the GSH-AsA dependent antioxidative indices decreased significantly (p < 0.01), manifested by increased levels of H2O2. Furthermore, the levels of H2O2, MDA and RC varied little when SO2 doses and exposure times reached a 'critical' value (50 mg m(-3)/24 h). The defense ability of T. erecta to SO2 reached nearly extremity. To summarize, the response of T erecta to elevated SO2 was related to higher H2O2 levels. GSH-AsA dependent detoxification pathway played an important role in against SO2-induced toxicity, although the defense response could not sufficiently alleviate oxidative damage when SO2 doses and exposure times reached critical value. (C) 2014 Elsevier Inc. All rights reserved.

  • 相关文献

[1]Involvement of NO and ROS in sulfur dioxide induced guard cells apoptosis in Tagetes erecta. Wei, Aili,Zhai, Xiaoyan,Zhang, Xiaobing,Fu, Baocun,Wang, Yunshan,Zhang, Chao,Cao, Dongmei,Xin, Xiaojing.

[2]SO_2诱导的萱草保卫细胞凋亡及其信号调节. 魏爱丽,辛晓静,王云山,张超,曹冬梅. 2014

[3]NO、ROS对SO_2诱导的万寿菊保卫细胞凋亡的调控. 付宝春,魏爱丽,翟晓燕,曹冬梅,张超,段九菊,王云山. 2015

[4]不同SO2保鲜剂对先锋甜樱桃采后保鲜效果的研究. 陈嘉,冯志宏,赵迎丽,王华瑞,王亮,闫根柱,王春生. 2013

[5]SO_2诱导的萱草保卫细胞气孔运动及其信号调节. 魏爱丽,韩二琴,张小冰,武凤洁,辛晓静,王婷,张珊珊,王云山,曹冬梅. 2016

[6]Identification and characterization of two CYP9A genes associated with pyrethroid detoxification in Locusta migratoria. Zhu, Wenya,Yu, Rongrong,Wu, Haihua,Zhang, Xueyao,Liu, Yaoming,Zhang, Jianzhen,Ma, Enbo,Zhu, Wenya,Zhu, Kun Yan,Zhu, Wenya,Zhu, Wenya.

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：山西省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台