Xylem- and Phloem-Based Transport of CuO Nanoparticles in Maize (Zea mays L.)
This work reports on the toxicity of CuO nanoparticles (NPs) to maize (Zea mays L.) and their transport and redistribution in the plant. CuO NPs (100 mg L–1) had no effect on germination, but inhibited the growth of maize seedlings; in comparison the dissolved Cu2+ ions and CuO bulk particles had no...
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| Veröffentlicht in: | Environmental science & technology 2012-04, Vol.46 (8), p.4434-4441 |
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| creator | Wang, Zhenyu Xie, Xiaoyan Zhao, Jian Liu, Xiaoyun Feng, Wenqiang White, Jason C Xing, Baoshan |
| description | This work reports on the toxicity of CuO nanoparticles (NPs) to maize (Zea mays L.) and their transport and redistribution in the plant. CuO NPs (100 mg L–1) had no effect on germination, but inhibited the growth of maize seedlings; in comparison the dissolved Cu2+ ions and CuO bulk particles had no obvious effect on maize growth. CuO NPs were present in xylem sap as examined by transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS), showing that CuO NPs were transported from roots to shoots via xylem. Split-root experiments and high-resolution TEM observation further showed that CuO NPs could translocate from shoots back to roots via phloem. During this translocation, CuO NPs could be reduced from Cu (II) to Cu (I). To our knowledge, this is the first report of root–shoot–root redistribution of CuO NPs within maize. The current study provides direct evidence for the bioaccumulation and biotransformation of CuO NPs (20–40 nm) in maize, which has significant implications on the potential risk of NPs and food safety. |
| doi_str_mv | 10.1021/es204212z |
| format | Article |
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CuO NPs (100 mg L–1) had no effect on germination, but inhibited the growth of maize seedlings; in comparison the dissolved Cu2+ ions and CuO bulk particles had no obvious effect on maize growth. CuO NPs were present in xylem sap as examined by transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS), showing that CuO NPs were transported from roots to shoots via xylem. Split-root experiments and high-resolution TEM observation further showed that CuO NPs could translocate from shoots back to roots via phloem. During this translocation, CuO NPs could be reduced from Cu (II) to Cu (I). To our knowledge, this is the first report of root–shoot–root redistribution of CuO NPs within maize. The current study provides direct evidence for the bioaccumulation and biotransformation of CuO NPs (20–40 nm) in maize, which has significant implications on the potential risk of NPs and food safety.</description><identifier>ISSN: 0013-936X</identifier><identifier>EISSN: 1520-5851</identifier><identifier>DOI: 10.1021/es204212z</identifier><identifier>PMID: 22435775</identifier><identifier>CODEN: ESTHAG</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>Biological and medical sciences ; Biological Transport ; Biotransformation ; Copper ; Copper - metabolism ; Copper - toxicity ; Corn ; Fundamental and applied biological sciences. Psychology ; Germination - drug effects ; Nanoparticles ; Nanoparticles - toxicity ; Non agrochemicals pollutants ; Phloem - metabolism ; Phytopathology. Animal pests. Plant and forest protection ; Plant growth ; Plant Roots - drug effects ; Plant Roots - growth & development ; Plant Roots - metabolism ; Plant Shoots - drug effects ; Plant Shoots - growth & development ; Plant Shoots - metabolism ; Pollution effects and side effects of agrochemicals on crop plants and forest trees. Other anthropogenic factors ; Pollution effects. Side effects of agrochemicals ; Seedlings - drug effects ; Seedlings - growth & development ; Seedlings - metabolism ; Toxicity ; Transmission electron microscopy ; Xylem - metabolism ; Zea mays - drug effects ; Zea mays - growth & development ; Zea mays - metabolism</subject><ispartof>Environmental science & technology, 2012-04, Vol.46 (8), p.4434-4441</ispartof><rights>Copyright © 2012 American Chemical Society</rights><rights>2014 INIST-CNRS</rights><rights>Copyright American Chemical Society Apr 17, 2012</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a373t-738feba46702a206e00a9750eb29f31def84a69bf51a883b93467a634067292a3</citedby><cites>FETCH-LOGICAL-a373t-738feba46702a206e00a9750eb29f31def84a69bf51a883b93467a634067292a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/es204212z$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/es204212z$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>314,780,784,2765,27076,27924,27925,56738,56788</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=25812094$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22435775$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Wang, Zhenyu</creatorcontrib><creatorcontrib>Xie, Xiaoyan</creatorcontrib><creatorcontrib>Zhao, Jian</creatorcontrib><creatorcontrib>Liu, Xiaoyun</creatorcontrib><creatorcontrib>Feng, Wenqiang</creatorcontrib><creatorcontrib>White, Jason C</creatorcontrib><creatorcontrib>Xing, Baoshan</creatorcontrib><title>Xylem- and Phloem-Based Transport of CuO Nanoparticles in Maize (Zea mays L.)</title><title>Environmental science & technology</title><addtitle>Environ. Sci. Technol</addtitle><description>This work reports on the toxicity of CuO nanoparticles (NPs) to maize (Zea mays L.) and their transport and redistribution in the plant. CuO NPs (100 mg L–1) had no effect on germination, but inhibited the growth of maize seedlings; in comparison the dissolved Cu2+ ions and CuO bulk particles had no obvious effect on maize growth. CuO NPs were present in xylem sap as examined by transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS), showing that CuO NPs were transported from roots to shoots via xylem. Split-root experiments and high-resolution TEM observation further showed that CuO NPs could translocate from shoots back to roots via phloem. During this translocation, CuO NPs could be reduced from Cu (II) to Cu (I). To our knowledge, this is the first report of root–shoot–root redistribution of CuO NPs within maize. The current study provides direct evidence for the bioaccumulation and biotransformation of CuO NPs (20–40 nm) in maize, which has significant implications on the potential risk of NPs and food safety.</description><subject>Biological and medical sciences</subject><subject>Biological Transport</subject><subject>Biotransformation</subject><subject>Copper</subject><subject>Copper - metabolism</subject><subject>Copper - toxicity</subject><subject>Corn</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Germination - drug effects</subject><subject>Nanoparticles</subject><subject>Nanoparticles - toxicity</subject><subject>Non agrochemicals pollutants</subject><subject>Phloem - metabolism</subject><subject>Phytopathology. Animal pests. Plant and forest protection</subject><subject>Plant growth</subject><subject>Plant Roots - drug effects</subject><subject>Plant Roots - growth & development</subject><subject>Plant Roots - metabolism</subject><subject>Plant Shoots - drug effects</subject><subject>Plant Shoots - growth & development</subject><subject>Plant Shoots - metabolism</subject><subject>Pollution effects and side effects of agrochemicals on crop plants and forest trees. Other anthropogenic factors</subject><subject>Pollution effects. Side effects of agrochemicals</subject><subject>Seedlings - drug effects</subject><subject>Seedlings - growth & development</subject><subject>Seedlings - metabolism</subject><subject>Toxicity</subject><subject>Transmission electron microscopy</subject><subject>Xylem - metabolism</subject><subject>Zea mays - drug effects</subject><subject>Zea mays - growth & development</subject><subject>Zea mays - metabolism</subject><issn>0013-936X</issn><issn>1520-5851</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpd0EtLAzEQwPEgiq3Vg19AAiLYw9ZJstnHUYsvaK2HCsXLMrub4JZ91GT30H56I61VPGUOP2bCn5BzBiMGnN0oy8HnjG8OSJ9JDp6MJDskfQAmvFgEix45sXYJAFxAdEx6nPtChqHsk-liXarKo1jn9PWjbNx8h1bldG6wtqvGtLTRdNzN6AvWzQpNW2SlsrSo6RSLjaLX7wpphWtLJ6PhKTnSWFp1tnsH5O3hfj5-8iazx-fx7cRDEYrWC0WkVYp-EAJHDoECwDiUoFIea8FypSMfgzjVkmEUiTQWjmIgfAhCHnMUA3K53bsyzWenbJssm87U7mTCgIGLEUru1HCrMtNYa5ROVqao0KwdSr7DJftwzl7sNnZppfK9_CnlwNUOoM2w1C5PVthfJyPGIfZ_HWb276_-H_wCjrZ9rg</recordid><startdate>20120417</startdate><enddate>20120417</enddate><creator>Wang, Zhenyu</creator><creator>Xie, Xiaoyan</creator><creator>Zhao, Jian</creator><creator>Liu, Xiaoyun</creator><creator>Feng, Wenqiang</creator><creator>White, Jason C</creator><creator>Xing, Baoshan</creator><general>American Chemical Society</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>7ST</scope><scope>7T7</scope><scope>7U7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope><scope>SOI</scope></search><sort><creationdate>20120417</creationdate><title>Xylem- and Phloem-Based Transport of CuO Nanoparticles in Maize (Zea mays L.)</title><author>Wang, Zhenyu ; Xie, Xiaoyan ; Zhao, Jian ; Liu, Xiaoyun ; Feng, Wenqiang ; White, Jason C ; Xing, Baoshan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a373t-738feba46702a206e00a9750eb29f31def84a69bf51a883b93467a634067292a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Biological and medical sciences</topic><topic>Biological Transport</topic><topic>Biotransformation</topic><topic>Copper</topic><topic>Copper - metabolism</topic><topic>Copper - toxicity</topic><topic>Corn</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Germination - drug effects</topic><topic>Nanoparticles</topic><topic>Nanoparticles - toxicity</topic><topic>Non agrochemicals pollutants</topic><topic>Phloem - metabolism</topic><topic>Phytopathology. Animal pests. Plant and forest protection</topic><topic>Plant growth</topic><topic>Plant Roots - drug effects</topic><topic>Plant Roots - growth & development</topic><topic>Plant Roots - metabolism</topic><topic>Plant Shoots - drug effects</topic><topic>Plant Shoots - growth & development</topic><topic>Plant Shoots - metabolism</topic><topic>Pollution effects and side effects of agrochemicals on crop plants and forest trees. Other anthropogenic factors</topic><topic>Pollution effects. Side effects of agrochemicals</topic><topic>Seedlings - drug effects</topic><topic>Seedlings - growth & development</topic><topic>Seedlings - metabolism</topic><topic>Toxicity</topic><topic>Transmission electron microscopy</topic><topic>Xylem - metabolism</topic><topic>Zea mays - drug effects</topic><topic>Zea mays - growth & development</topic><topic>Zea mays - metabolism</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Zhenyu</creatorcontrib><creatorcontrib>Xie, Xiaoyan</creatorcontrib><creatorcontrib>Zhao, Jian</creatorcontrib><creatorcontrib>Liu, Xiaoyun</creatorcontrib><creatorcontrib>Feng, Wenqiang</creatorcontrib><creatorcontrib>White, Jason C</creatorcontrib><creatorcontrib>Xing, Baoshan</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environment Abstracts</collection><jtitle>Environmental science & technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Zhenyu</au><au>Xie, Xiaoyan</au><au>Zhao, Jian</au><au>Liu, Xiaoyun</au><au>Feng, Wenqiang</au><au>White, Jason C</au><au>Xing, Baoshan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Xylem- and Phloem-Based Transport of CuO Nanoparticles in Maize (Zea mays L.)</atitle><jtitle>Environmental science & technology</jtitle><addtitle>Environ. Sci. Technol</addtitle><date>2012-04-17</date><risdate>2012</risdate><volume>46</volume><issue>8</issue><spage>4434</spage><epage>4441</epage><pages>4434-4441</pages><issn>0013-936X</issn><eissn>1520-5851</eissn><coden>ESTHAG</coden><abstract>This work reports on the toxicity of CuO nanoparticles (NPs) to maize (Zea mays L.) and their transport and redistribution in the plant. CuO NPs (100 mg L–1) had no effect on germination, but inhibited the growth of maize seedlings; in comparison the dissolved Cu2+ ions and CuO bulk particles had no obvious effect on maize growth. CuO NPs were present in xylem sap as examined by transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS), showing that CuO NPs were transported from roots to shoots via xylem. Split-root experiments and high-resolution TEM observation further showed that CuO NPs could translocate from shoots back to roots via phloem. During this translocation, CuO NPs could be reduced from Cu (II) to Cu (I). To our knowledge, this is the first report of root–shoot–root redistribution of CuO NPs within maize. The current study provides direct evidence for the bioaccumulation and biotransformation of CuO NPs (20–40 nm) in maize, which has significant implications on the potential risk of NPs and food safety.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><pmid>22435775</pmid><doi>10.1021/es204212z</doi><tpages>8</tpages></addata></record> |
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| subjects | Biological and medical sciences Biological Transport Biotransformation Copper Copper - metabolism Copper - toxicity Corn Fundamental and applied biological sciences. Psychology Germination - drug effects Nanoparticles Nanoparticles - toxicity Non agrochemicals pollutants Phloem - metabolism Phytopathology. Animal pests. Plant and forest protection Plant growth Plant Roots - drug effects Plant Roots - growth & development Plant Roots - metabolism Plant Shoots - drug effects Plant Shoots - growth & development Plant Shoots - metabolism Pollution effects and side effects of agrochemicals on crop plants and forest trees. Other anthropogenic factors Pollution effects. Side effects of agrochemicals Seedlings - drug effects Seedlings - growth & development Seedlings - metabolism Toxicity Transmission electron microscopy Xylem - metabolism Zea mays - drug effects Zea mays - growth & development Zea mays - metabolism |
| title | Xylem- and Phloem-Based Transport of CuO Nanoparticles in Maize (Zea mays L.) |
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