File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: The role of EDTA in phytoextraction of hexavalent and trivalent chromium by two willow trees

TitleThe role of EDTA in phytoextraction of hexavalent and trivalent chromium by two willow trees
Authors
KeywordsAccumulation
Chromium
Ethylenediamine tetraacetate (EDTA)
Translocation
Willows
Issue Date2008
PublisherSpringer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0963-9292
Citation
Ecotoxicology, 2008, v. 17 n. 3, p. 143-152 How to Cite?
AbstractEffects of the synthetic chelator ethylenediamine tetraacetate (EDTA) on uptake and internal translocation of hexavalent and trivalent chromium by plants were investigated. Two different concentrations of EDTA were studied for enhancing the uptake and translocation of Cr from the hydroponic solution spiked with K2CrO4 or CrCl3 maintained at 24.0 ± 1°C. Faster removal of Cr3+ than Cr6+ by hybrid willows (Salix matsudana Koidz × Salix alba L.) from the plant growth media was observed. Negligible effect of EDTA on the uptake of Cr 6+ was found, but significant decrease of the Cr concentration in roots was measured. Although the translocation of Cr6+ within plant materials was detected in response to EDTA concentration, the amount of Cr 6+ translocated to the lower stems was considerably small. EDTA in the nutrient media showed a negative effect on the uptake of Cr3+ by hybrid willows; the removal rates of Cr3+ were significantly decreased. Translocation of Cr3+ into the stems and leaves was undetectable, but roots were the exclusive sink for Cr3+ accumulation. Weeping willows (Salix babylonica L.) showed lower removal rates for both chemical forms of Cr than hybrid willows. Although EDTA had a minor effect on Cr6+ uptake by weeping willows, positive effect on Cr 6+ translocation within plant materials was observed. It was also determined that EDTA in plant growth media significantly decreased the amount of Cr3+ taken up by plants, but significantly increased Cr3+ mobilization from roots to stems. Results indicated that EDTA was unable to increase the uptake of Cr6+ by both plant species, but translocation of Cr6+-EDTA within plant materials was possible. Addition of EDTA in the nutrient media showed a strong influence on the uptake and translocation of Cr3+ in both willows. Cr3+-EDTA in tissues of weeping willows was more mobile than that in hybrid willows. The information has important implications for the use of metal chelator in plant nutritional research. © 2007 Springer Science+Business Media, LLC.
Persistent Identifierhttp://hdl.handle.net/10722/89308
ISSN
2015 Impact Factor: 2.329
2015 SCImago Journal Rankings: 1.108
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYu, XZen_HK
dc.contributor.authorGu, JDen_HK
dc.date.accessioned2010-09-06T09:55:13Z-
dc.date.available2010-09-06T09:55:13Z-
dc.date.issued2008en_HK
dc.identifier.citationEcotoxicology, 2008, v. 17 n. 3, p. 143-152en_HK
dc.identifier.issn0963-9292en_HK
dc.identifier.urihttp://hdl.handle.net/10722/89308-
dc.description.abstractEffects of the synthetic chelator ethylenediamine tetraacetate (EDTA) on uptake and internal translocation of hexavalent and trivalent chromium by plants were investigated. Two different concentrations of EDTA were studied for enhancing the uptake and translocation of Cr from the hydroponic solution spiked with K2CrO4 or CrCl3 maintained at 24.0 ± 1°C. Faster removal of Cr3+ than Cr6+ by hybrid willows (Salix matsudana Koidz × Salix alba L.) from the plant growth media was observed. Negligible effect of EDTA on the uptake of Cr 6+ was found, but significant decrease of the Cr concentration in roots was measured. Although the translocation of Cr6+ within plant materials was detected in response to EDTA concentration, the amount of Cr 6+ translocated to the lower stems was considerably small. EDTA in the nutrient media showed a negative effect on the uptake of Cr3+ by hybrid willows; the removal rates of Cr3+ were significantly decreased. Translocation of Cr3+ into the stems and leaves was undetectable, but roots were the exclusive sink for Cr3+ accumulation. Weeping willows (Salix babylonica L.) showed lower removal rates for both chemical forms of Cr than hybrid willows. Although EDTA had a minor effect on Cr6+ uptake by weeping willows, positive effect on Cr 6+ translocation within plant materials was observed. It was also determined that EDTA in plant growth media significantly decreased the amount of Cr3+ taken up by plants, but significantly increased Cr3+ mobilization from roots to stems. Results indicated that EDTA was unable to increase the uptake of Cr6+ by both plant species, but translocation of Cr6+-EDTA within plant materials was possible. Addition of EDTA in the nutrient media showed a strong influence on the uptake and translocation of Cr3+ in both willows. Cr3+-EDTA in tissues of weeping willows was more mobile than that in hybrid willows. The information has important implications for the use of metal chelator in plant nutritional research. © 2007 Springer Science+Business Media, LLC.en_HK
dc.languageengen_HK
dc.publisherSpringer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0963-9292en_HK
dc.relation.ispartofEcotoxicologyen_HK
dc.subjectAccumulationen_HK
dc.subjectChromiumen_HK
dc.subjectEthylenediamine tetraacetate (EDTA)en_HK
dc.subjectTranslocationen_HK
dc.subjectWillowsen_HK
dc.titleThe role of EDTA in phytoextraction of hexavalent and trivalent chromium by two willow treesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0963-9292&volume=17&spage=143&epage=152&date=2008&atitle=The+role+of+EDTA+in+phytoextraction+of+hexavalent+and+trivalent+chromium+by+two+willow+treesen_HK
dc.identifier.emailGu, JD: jdgu@hkucc.hku.hken_HK
dc.identifier.authorityGu, JD=rp00701en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s10646-007-0177-6en_HK
dc.identifier.pmid17972178-
dc.identifier.scopuseid_2-s2.0-38949155317en_HK
dc.identifier.hkuros141820en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-38949155317&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume17en_HK
dc.identifier.issue3en_HK
dc.identifier.spage143en_HK
dc.identifier.epage152en_HK
dc.identifier.isiWOS:000252798400001-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridYu, XZ=24449490500en_HK
dc.identifier.scopusauthoridGu, JD=7403129601en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats