More than the Ions: The Effects of Silver Nanoparticles on Lolium multiflorum
文献类型：期刊论文
| 作者 | Yin, Liyan1,5,6; Rose, Jerome1,2; Wiesner, Mark1,3; Liu, Jie1,4; Cheng, Yingwen1,4; Espinasse, Benjamin1,3; Auffan, Melanie2; Colman, Benjamin P.1,5; Bernhardt, Emily S.1,5 |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2011-03-15 |
| 卷号 | 45期号:6页码:2360-2367 |
| ISSN号 | 0013-936X |
| DOI | 10.1021/es103995x |
| 英文摘要 | Silver nanoparticles (AgNPs) are increasingly used as antimicrobial additives in consumer products and may have adverse impacts on organisms when they inadvertently enter ecosystems. This study investigated the uptake and toxicity of AgNPs to the common grass, Lolium multiflorum. We found that root and shoot Ag content increased with increasing AgNP exposures. AgNPs inhibited seedling growth. While exposed to 40 mg L(-1) GA-coated AgNPs, seedlings failed to develop root hairs, had highly vacuolated and collapsed cortical cells and broken epidermis and rootcap. In contrast, seedlings exposed to identical concentrations of AgNO(3) or supernatants of ultracentrifuged AgNP solutions showed no such abnormalities. AgNP toxicity was influenced by total NP surface area with smaller AgNPs (6 nm) more strongly affecting growth than did similar concentrations of larger (25 nm) NPs for a given mass. Cysteine (which binds Ag(+)) mitigated the effects of AgNO(3) but did not reduce the toxicity of AgNP treatments. X-ray spectro-microscopy documented silver speciation within exposed roots and suggested that silver is oxidized within plant tissues. Collectively, this study suggests that growth inhibition and cell damage can be directly attributed either to the nanoparticles themselves or to the ability of AgNPs to deliver dissolved Ag to critical biotic receptors. |
| 资助项目 | Chinese Academy of Sciences ; National Scientific Foundation of China[30700083] ; National Science Foundation (NSF) ; Environmental Protection Agency (EPA) under NSF, Center for the Environmental Implications of NanoTechnology (CEINT)[EF-0830093] |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000288146200046 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/881]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Bernhardt, Emily S. |
| 作者单位 | 1.Duke Univ, Ctr Environm Implicat Nanotechnol, Durham, NC 27708 USA 2.Aix Marseille Univ, CNRS, iCEINT Int Consortium Environm Implicat NanoTechn, CEREGE UMR 6635, F-13545 Aix En Provence, France 3.Duke Univ, Dept Civil & Environm Engn, Durham, NC 27708 USA 4.Duke Univ, Dept Chem, Durham, NC 27708 USA 5.Duke Univ, Dept Biol, Durham, NC 27708 USA 6.Chinese Acad Sci, Key Lab Aquat Bot & Watershed Ecol, Wuhan Bot Garden, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yin, Liyan,Rose, Jerome,Wiesner, Mark,et al. More than the Ions: The Effects of Silver Nanoparticles on Lolium multiflorum[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2011,45(6):2360-2367. |
| APA | Yin, Liyan.,Rose, Jerome.,Wiesner, Mark.,Liu, Jie.,Cheng, Yingwen.,...&Bernhardt, Emily S..(2011).More than the Ions: The Effects of Silver Nanoparticles on Lolium multiflorum.ENVIRONMENTAL SCIENCE & TECHNOLOGY,45(6),2360-2367. |
| MLA | Yin, Liyan,et al."More than the Ions: The Effects of Silver Nanoparticles on Lolium multiflorum".ENVIRONMENTAL SCIENCE & TECHNOLOGY 45.6(2011):2360-2367. |
入库方式： OAI收割
来源：武汉植物园
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。