Detoxification of cyanide by woody plants.
Identifieur interne : 001C74 ( Main/Corpus ); précédent : 001C73; suivant : 001C75Detoxification of cyanide by woody plants.
Auteurs : Xiaozhang Yu ; Puhua Zhou ; Yunda Liu ; Hao HuSource :
- Archives of environmental contamination and toxicology [ 0090-4341 ] ; 2005.
English descriptors
- KwdEn :
- Biodegradation, Environmental (MeSH), Biomass (MeSH), Environmental Pollutants (analysis), Environmental Pollutants (toxicity), Models, Biological (MeSH), Populus (chemistry), Populus (growth & development), Potassium Cyanide (analysis), Potassium Cyanide (toxicity), Salix (chemistry), Salix (growth & development), Species Specificity (MeSH).
- MESH :
- chemical , analysis : Environmental Pollutants, Potassium Cyanide.
- chemical , toxicity : Environmental Pollutants, Potassium Cyanide.
- chemistry : Populus, Salix.
- growth & development : Populus, Salix.
- Biodegradation, Environmental, Biomass, Models, Biological, Species Specificity.
Abstract
Vascular plants possess an enzyme system that detoxifies cyanide by converting it to the amino acid asparagine. This paper examines the potential of three woody plants from the Salicaceae family to degrade cyanide. Pre-rooted trees were grown in carefully designed bioreactors with aqueous solution spiked with potassium cyanide at 23.0 +/- 1 degree C for a maximum of 144 h. Cyanide concentrations ranged from 0.95 to 1.15 CN mg/L. Cyanide in water and in plant tissues was analyzed spectrophotometrically. Results from the investigation indicated that significant reduction of aqueous cyanide was found during the presence of plants in all treatments. Little amounts of applied cyanide were detected in the tissues of plants, mainly in roots and bottom stem. Cyanide remaining in tissues varied with the species of plants, despite similar periods of exposure. The data also indicated that photolysis, hydrolysis, and microbial degradation were not occurring and that volatilization was minimal. In conclusion, transport and metabolism of cyanide in plants is most likely.
DOI: 10.1007/s00244-004-0129-6
PubMed: 15981035
Links to Exploration step
pubmed:15981035Le document en format XML
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This paper examines the potential of three woody plants from the Salicaceae family to degrade cyanide. Pre-rooted trees were grown in carefully designed bioreactors with aqueous solution spiked with potassium cyanide at 23.0 +/- 1 degree C for a maximum of 144 h. Cyanide concentrations ranged from 0.95 to 1.15 CN mg/L. Cyanide in water and in plant tissues was analyzed spectrophotometrically. Results from the investigation indicated that significant reduction of aqueous cyanide was found during the presence of plants in all treatments. Little amounts of applied cyanide were detected in the tissues of plants, mainly in roots and bottom stem. Cyanide remaining in tissues varied with the species of plants, despite similar periods of exposure. The data also indicated that photolysis, hydrolysis, and microbial degradation were not occurring and that volatilization was minimal. In conclusion, transport and metabolism of cyanide in plants is most likely.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">15981035</PMID><DateCompleted><Year>2005</Year><Month>10</Month><Day>20</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Print">0090-4341</ISSN><JournalIssue CitedMedium="Print"><Volume>49</Volume><Issue>2</Issue><PubDate><Year>2005</Year><Month>Aug</Month></PubDate></JournalIssue><Title>Archives of environmental contamination and toxicology</Title><ISOAbbreviation>Arch Environ Contam Toxicol</ISOAbbreviation></Journal><ArticleTitle>Detoxification of cyanide by woody plants.</ArticleTitle><Pagination><MedlinePgn>150-4</MedlinePgn></Pagination><Abstract><AbstractText>Vascular plants possess an enzyme system that detoxifies cyanide by converting it to the amino acid asparagine. This paper examines the potential of three woody plants from the Salicaceae family to degrade cyanide. Pre-rooted trees were grown in carefully designed bioreactors with aqueous solution spiked with potassium cyanide at 23.0 +/- 1 degree C for a maximum of 144 h. Cyanide concentrations ranged from 0.95 to 1.15 CN mg/L. Cyanide in water and in plant tissues was analyzed spectrophotometrically. Results from the investigation indicated that significant reduction of aqueous cyanide was found during the presence of plants in all treatments. Little amounts of applied cyanide were detected in the tissues of plants, mainly in roots and bottom stem. Cyanide remaining in tissues varied with the species of plants, despite similar periods of exposure. The data also indicated that photolysis, hydrolysis, and microbial degradation were not occurring and that volatilization was minimal. In conclusion, transport and metabolism of cyanide in plants is most likely.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Yu</LastName><ForeName>Xiaozhang</ForeName><Initials>X</Initials><AffiliationInfo><Affiliation>Department of Environmental Science, Hunan Agricultural University, Changsha, Hunan, 410128, PR China. yuxiaozhang@hotmail.com</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Zhou</LastName><ForeName>Puhua</ForeName><Initials>P</Initials></Author><Author ValidYN="Y"><LastName>Liu</LastName><ForeName>Yunda</ForeName><Initials>Y</Initials></Author><Author ValidYN="Y"><LastName>Hu</LastName><ForeName>Hao</ForeName><Initials>H</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2005</Year><Month>06</Month><Day>22</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Arch Environ Contam Toxicol</MedlineTA><NlmUniqueID>0357245</NlmUniqueID><ISSNLinking>0090-4341</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D004785">Environmental Pollutants</NameOfSubstance></Chemical><Chemical><RegistryNumber>MQD255M2ZO</RegistryNumber><NameOfSubstance UI="D011190">Potassium Cyanide</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D001673" MajorTopicYN="Y">Biodegradation, Environmental</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018533" MajorTopicYN="N">Biomass</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D004785" MajorTopicYN="N">Environmental Pollutants</DescriptorName><QualifierName UI="Q000032" MajorTopicYN="Y">analysis</QualifierName><QualifierName UI="Q000633" MajorTopicYN="N">toxicity</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008954" MajorTopicYN="N">Models, Biological</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="N">chemistry</QualifierName><QualifierName UI="Q000254" MajorTopicYN="Y">growth & development</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D011190" MajorTopicYN="N">Potassium Cyanide</DescriptorName><QualifierName UI="Q000032" MajorTopicYN="Y">analysis</QualifierName><QualifierName UI="Q000633" MajorTopicYN="N">toxicity</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032108" MajorTopicYN="N">Salix</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="N">chemistry</QualifierName><QualifierName UI="Q000254" MajorTopicYN="Y">growth & development</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013045" MajorTopicYN="N">Species Specificity</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2004</Year><Month>06</Month><Day>26</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2005</Year><Month>01</Month><Day>18</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2005</Year><Month>6</Month><Day>28</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2005</Year><Month>10</Month><Day>21</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2005</Year><Month>6</Month><Day>28</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">15981035</ArticleId><ArticleId IdType="doi">10.1007/s00244-004-0129-6</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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