Effect of temperature on the uptake and metabolism of cyanide by weeping willows.
Identifieur interne : 001949 ( Main/Corpus ); précédent : 001948; suivant : 001950Effect of temperature on the uptake and metabolism of cyanide by weeping willows.
Auteurs : Xiao-Zhang Yu ; Stefan Trapp ; Pu-Hua Zhou ; Liang ChenSource :
- International journal of phytoremediation [ 1522-6514 ]
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Cyanides.
- geographic : China.
- metabolism : Salix, Trees.
- Biodegradation, Environmental, Biological Transport, Kinetics, Plant Transpiration, Temperature, Thermodynamics.
Abstract
Plants' uptake and metabolism of cyanide in response to changes in temperature was investigated. Pre-rooted weeping willows (Salix babylonica L.) were exposed to hydroponic solution spiked with potassium cyanide for 2-3 d. Ten different temperatures were used, ranging from 11 degrees C to 32 degrees C. Cyanide in water, plant tissue, and air was analyzed spectrophotometrically. The results revealed that significant amounts of the applied cyanide were removed from the aqueous solutions in the presence of plants. Small amounts of free cyanide were detected in plant materials in all treatments, but there was no clear trend that showed an increase or decrease in the accumulation in plant material with temperature. The highest cyanide metabolism rate for weeping willows was found at 32 degrees C with a value of 2.78 mg CN/(kg x d), whereas the lowest value was 1.20 mg CN/(kg x d) at ll degrees C. The temperature coefficient, Q10, which is the ratio of metabolism rates at a 10 degrees C difference, was determined for weeping willows to be 1.46. In conclusion, changes in temperature have a substantial influence on the uptake and metabolism of cyanide by plants, but cyanide accumulation does not increase with temperature.
DOI: 10.1080/15226510701376141
PubMed: 18246771
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Pre-rooted weeping willows (Salix babylonica L.) were exposed to hydroponic solution spiked with potassium cyanide for 2-3 d. Ten different temperatures were used, ranging from 11 degrees C to 32 degrees C. Cyanide in water, plant tissue, and air was analyzed spectrophotometrically. The results revealed that significant amounts of the applied cyanide were removed from the aqueous solutions in the presence of plants. Small amounts of free cyanide were detected in plant materials in all treatments, but there was no clear trend that showed an increase or decrease in the accumulation in plant material with temperature. The highest cyanide metabolism rate for weeping willows was found at 32 degrees C with a value of 2.78 mg CN/(kg x d), whereas the lowest value was 1.20 mg CN/(kg x d) at ll degrees C. The temperature coefficient, Q10, which is the ratio of metabolism rates at a 10 degrees C difference, was determined for weeping willows to be 1.46. In conclusion, changes in temperature have a substantial influence on the uptake and metabolism of cyanide by plants, but cyanide accumulation does not increase with temperature.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">18246771</PMID><DateCompleted><Year>2008</Year><Month>02</Month><Day>26</Day></DateCompleted><DateRevised><Year>2009</Year><Month>01</Month><Day>12</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">1522-6514</ISSN><JournalIssue CitedMedium="Print"><Volume>9</Volume><Issue>3</Issue><PubDate><MedlineDate>2007 May-Jun</MedlineDate></PubDate></JournalIssue><Title>International journal of phytoremediation</Title><ISOAbbreviation>Int J Phytoremediation</ISOAbbreviation></Journal><ArticleTitle>Effect of temperature on the uptake and metabolism of cyanide by weeping willows.</ArticleTitle><Pagination><MedlinePgn>243-55</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1080/15226510701376141</ELocationID><Abstract><AbstractText>Plants' uptake and metabolism of cyanide in response to changes in temperature was investigated. Pre-rooted weeping willows (Salix babylonica L.) were exposed to hydroponic solution spiked with potassium cyanide for 2-3 d. Ten different temperatures were used, ranging from 11 degrees C to 32 degrees C. Cyanide in water, plant tissue, and air was analyzed spectrophotometrically. The results revealed that significant amounts of the applied cyanide were removed from the aqueous solutions in the presence of plants. Small amounts of free cyanide were detected in plant materials in all treatments, but there was no clear trend that showed an increase or decrease in the accumulation in plant material with temperature. The highest cyanide metabolism rate for weeping willows was found at 32 degrees C with a value of 2.78 mg CN/(kg x d), whereas the lowest value was 1.20 mg CN/(kg x d) at ll degrees C. The temperature coefficient, Q10, which is the ratio of metabolism rates at a 10 degrees C difference, was determined for weeping willows to be 1.46. In conclusion, changes in temperature have a substantial influence on the uptake and metabolism of cyanide by plants, but cyanide accumulation does not increase with temperature.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Yu</LastName><ForeName>Xiao-Zhang</ForeName><Initials>XZ</Initials><AffiliationInfo><Affiliation>Department of Environmental Science, Hunan Agricultural University, Hunan, PR China. yuxiaozhang@hotmail.com</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Trapp</LastName><ForeName>Stefan</ForeName><Initials>S</Initials></Author><Author ValidYN="Y"><LastName>Zhou</LastName><ForeName>Pu-Hua</ForeName><Initials>PH</Initials></Author><Author ValidYN="Y"><LastName>Chen</LastName><ForeName>Liang</ForeName><Initials>L</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></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Int J Phytoremediation</MedlineTA><NlmUniqueID>101136878</NlmUniqueID><ISSNLinking>1522-6514</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D003486">Cyanides</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D001673" MajorTopicYN="N">Biodegradation, Environmental</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D001692" MajorTopicYN="N">Biological Transport</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D002681" MajorTopicYN="N" Type="Geographic">China</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D003486" MajorTopicYN="N">Cyanides</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D007700" MajorTopicYN="N">Kinetics</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018526" MajorTopicYN="N">Plant Transpiration</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D032108" MajorTopicYN="N">Salix</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013696" MajorTopicYN="N">Temperature</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D013816" MajorTopicYN="N">Thermodynamics</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014197" MajorTopicYN="N">Trees</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2008</Year><Month>2</Month><Day>6</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2008</Year><Month>2</Month><Day>27</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2008</Year><Month>2</Month><Day>6</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">18246771</ArticleId><ArticleId IdType="doi">10.1080/15226510701376141</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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