| 水体阿特拉津残留对千屈菜的毒性效应 |
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| 引用本文： | 王庆海,张威,李翠,肖波,武菊英.水体阿特拉津残留对千屈菜的毒性效应[J].应用与环境生物学报,2011(6):814-818. |
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| 作者姓名： | 王庆海 张威 李翠 肖波 武菊英 |
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| 作者单位： | 北京市农林科学院北京草业与环境研究发展中心;华中农业大学植物科技学院; |
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| 基金项目： | 北京市科技新星计划项目(No.2006B03)资助~~ |
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| 摘 要： | 为向水体污染的植物修复技术提供依据,采用营养液水培法研究5个阿特拉津浓度(1、2、4、8和16 mg L-1)下千屈菜鲜重增量、叶片相对含水量(RWC)、丙二醛(MDA)含量、过氧化物酶(POD)活性、根系活力和叶绿素含量等的变化差异.结果表明,阿特拉津胁迫下,千屈菜在实验浓度范围内均可存活和生长;但鲜重增量、RWC、叶绿素含量均有不同程度的下降,根系活力和POD活性降低,同时MDA含量上升,膜脂过氧化程度加剧.阿特拉津浓度越高,其对千屈菜的毒性越高.1 mg L-1处理下,除POD活性外植物其他生长和生理指标均与空白对照无显著差异;但16 mgL-1处理下,鲜重增量、MDA含量和POD活性则显著低于正常水平.由于阿特拉津的降解,这种不良影响随处理时间的延长而减弱.千屈菜对低浓度阿特拉津(≤1 mg L-1)具有较高耐受性.
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| 关 键 词： | 阿特拉津 千屈菜 挺水植物 生物量 POD MDA 植物毒性 |
Phytotoxicity of Atrazine Residue in Water to Lythrum salicaria |
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| WANG Qinghai,ZHANG Wei,LI Cui,XIAO Bo & WU Juying.Phytotoxicity of Atrazine Residue in Water to Lythrum salicaria[J].Chinese Journal of Applied and Environmental Biology,2011(6):814-818. |
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| Authors: | WANG Qinghai ZHANG Wei LI Cui XIAO Bo & WU Juying |
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| Institution: | WANG Qinghai1,ZHANG Wei1,2,LI Cui1,XIAO Bo1 & WU Juying1(1Beijing Research & Development Center for Grass and Environment,Beijing Academy of Agriculture and Forestry Sciences,Beijing 100097,China)(2College of Plant Science and Technology,Huazhong Agricultural University,Wuhan 430070,China) |
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| Abstract: | Phytotoxicity of atrazine residue in water to Lythrum salicaria, an emerging aquatic macrophyte species, was assessed with hydroponic experiments by examining the impacts of atrazine stress on peroxidase (POD) activity, root activity, malonaldehyde (MDA) content, chlorophyll content, relative water content (RWC) and fresh weight of the sampled plants. The original atrazine dosages in the culture solutions were 1, 2, 4, 8 and 16 mg L-1, respectively. The plants were exposed to atrazine for 60 days. Plant s... |
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| Keywords: | atrazine Lythrum salicaria emergent macrophyte biomass POD MDA phytotoxicity |
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