Phytotoxicity and uptake of nanoscale zero-valent iron (nZVI) by two plant species.
Identifieur interne : 002547 ( Main/Exploration ); précédent : 002546; suivant : 002548Phytotoxicity and uptake of nanoscale zero-valent iron (nZVI) by two plant species.
Auteurs : Xingmao Ma [États-Unis] ; Arun Gurung ; Yang DengSource :
- The Science of the total environment [ 1879-1026 ] ; 2013.
Descripteurs français
- KwdFr :
- MESH :
- métabolisme : Fer, Populus.
- Microscopie électronique en transmission à balayage, Spécificité d'espèce.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Iron.
- metabolism : Populus.
- Microscopy, Electron, Scanning Transmission, Species Specificity.
Abstract
Use of nano-scale zero valent iron (nZVI) for the treatment of various environmental pollutants has been proven successful. However, large scale introduction of engineered nanomaterials such as nZVI into the environment has recently attracted serious concerns. There is an urgent need to investigate the environmental fate and impact of nZVI due to the scope of its application. The goal of this study was to evaluate the toxicity and accumulation of bare nZVI by two commonly encountered plant species: cattail (Typha latifolia) and hybrid poplars (Populous deltoids×Populous nigra). Plant seedlings were grown hydroponically in a greenhouse and dosed with different concentrations of nZVI (0-1000 mg/L) for four weeks. The nZVI exhibited strong toxic effect on Typha at higher concentrations (>200 mg/L) but enhanced plant growth at lower concentrations. nZVI also significantly reduced the transpiration and growth of hybrid poplars at higher concentrations. Microscopic images indicated that large amount of nZVI coated on plant root surface as irregular aggregates and some nZVI penetrated into several layers of epidermal cells. Transmission electron microscope (TEM) and scanning transmission electron microscope (STEM) confirmed the internalization of nZVI by poplar root cells but similar internalization was not observed for Typha root cells. The upward transport to shoots was minimal for both plant species.
DOI: 10.1016/j.scitotenv.2012.11.073
PubMed: 23247287
Affiliations:
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However, large scale introduction of engineered nanomaterials such as nZVI into the environment has recently attracted serious concerns. There is an urgent need to investigate the environmental fate and impact of nZVI due to the scope of its application. The goal of this study was to evaluate the toxicity and accumulation of bare nZVI by two commonly encountered plant species: cattail (Typha latifolia) and hybrid poplars (Populous deltoids×Populous nigra). Plant seedlings were grown hydroponically in a greenhouse and dosed with different concentrations of nZVI (0-1000 mg/L) for four weeks. The nZVI exhibited strong toxic effect on Typha at higher concentrations (>200 mg/L) but enhanced plant growth at lower concentrations. nZVI also significantly reduced the transpiration and growth of hybrid poplars at higher concentrations. Microscopic images indicated that large amount of nZVI coated on plant root surface as irregular aggregates and some nZVI penetrated into several layers of epidermal cells. Transmission electron microscope (TEM) and scanning transmission electron microscope (STEM) confirmed the internalization of nZVI by poplar root cells but similar internalization was not observed for Typha root cells. The upward transport to shoots was minimal for both plant species.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">23247287</PMID><DateCompleted><Year>2013</Year><Month>07</Month><Day>02</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1879-1026</ISSN><JournalIssue CitedMedium="Internet"><Volume>443</Volume><PubDate><Year>2013</Year><Month>Jan</Month><Day>15</Day></PubDate></JournalIssue><Title>The Science of the total environment</Title><ISOAbbreviation>Sci Total Environ</ISOAbbreviation></Journal><ArticleTitle>Phytotoxicity and uptake of nanoscale zero-valent iron (nZVI) by two plant species.</ArticleTitle><Pagination><MedlinePgn>844-9</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.scitotenv.2012.11.073</ELocationID><ELocationID EIdType="pii" ValidYN="Y">S0048-9697(12)01506-9</ELocationID><Abstract><AbstractText>Use of nano-scale zero valent iron (nZVI) for the treatment of various environmental pollutants has been proven successful. However, large scale introduction of engineered nanomaterials such as nZVI into the environment has recently attracted serious concerns. There is an urgent need to investigate the environmental fate and impact of nZVI due to the scope of its application. The goal of this study was to evaluate the toxicity and accumulation of bare nZVI by two commonly encountered plant species: cattail (Typha latifolia) and hybrid poplars (Populous deltoids×Populous nigra). Plant seedlings were grown hydroponically in a greenhouse and dosed with different concentrations of nZVI (0-1000 mg/L) for four weeks. The nZVI exhibited strong toxic effect on Typha at higher concentrations (>200 mg/L) but enhanced plant growth at lower concentrations. nZVI also significantly reduced the transpiration and growth of hybrid poplars at higher concentrations. Microscopic images indicated that large amount of nZVI coated on plant root surface as irregular aggregates and some nZVI penetrated into several layers of epidermal cells. Transmission electron microscope (TEM) and scanning transmission electron microscope (STEM) confirmed the internalization of nZVI by poplar root cells but similar internalization was not observed for Typha root cells. The upward transport to shoots was minimal for both plant species.</AbstractText><CopyrightInformation>Copyright © 2012 Elsevier B.V. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Ma</LastName><ForeName>Xingmao</ForeName><Initials>X</Initials><AffiliationInfo><Affiliation>Civil and Environmental Engineering, Southern Illinois University Carbondale, IL 62901, USA. ma@engr.siu.edu</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Gurung</LastName><ForeName>Arun</ForeName><Initials>A</Initials></Author><Author ValidYN="Y"><LastName>Deng</LastName><ForeName>Yang</ForeName><Initials>Y</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2012</Year><Month>12</Month><Day>17</Day></ArticleDate></Article><MedlineJournalInfo><Country>Netherlands</Country><MedlineTA>Sci Total Environ</MedlineTA><NlmUniqueID>0330500</NlmUniqueID><ISSNLinking>0048-9697</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>E1UOL152H7</RegistryNumber><NameOfSubstance UI="D007501">Iron</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D007501" MajorTopicYN="N">Iron</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D017348" MajorTopicYN="N">Microscopy, Electron, Scanning Transmission</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013045" MajorTopicYN="N">Species Specificity</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2012</Year><Month>07</Month><Day>31</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2012</Year><Month>11</Month><Day>20</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2012</Year><Month>11</Month><Day>20</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2012</Year><Month>12</Month><Day>19</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2012</Year><Month>12</Month><Day>19</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2013</Year><Month>7</Month><Day>3</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">23247287</ArticleId><ArticleId IdType="pii">S0048-9697(12)01506-9</ArticleId><ArticleId IdType="doi">10.1016/j.scitotenv.2012.11.073</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Illinois</li></region></list><tree><noCountry><name sortKey="Deng, Yang" sort="Deng, Yang" uniqKey="Deng Y" first="Yang" last="Deng">Yang Deng</name><name sortKey="Gurung, Arun" sort="Gurung, Arun" uniqKey="Gurung A" first="Arun" last="Gurung">Arun Gurung</name></noCountry><country name="États-Unis"><region name="Illinois"><name sortKey="Ma, Xingmao" sort="Ma, Xingmao" uniqKey="Ma X" first="Xingmao" last="Ma">Xingmao Ma</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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