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Article: Effect of available nitrogen on phytoavailability and bioaccumulation of hexavalent and trivalent chromium in hankow willows (Salix matsudana Koidz)

TitleEffect of available nitrogen on phytoavailability and bioaccumulation of hexavalent and trivalent chromium in hankow willows (Salix matsudana Koidz)
Authors
Issue Date2008
PublisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/ecoenv
Citation
Ecotoxicology And Environmental Safety, 2008, v. 70 n. 2, p. 216-222 How to Cite?
AbstractThe effect of available nitrogen in nutrient solution on removal of two chemical forms of chromium (Cr) by plants was investigated. Pre-rooted hankow willows (Salix matsudana Koidz) were grown in a hydroponic solution system with or without nitrogen, and amended with hexavalent chromium [Cr (VI)] or trivalent chromium [Cr (III)] at 25.0±0.5 °C for 192 h. The results revealed that higher removal of Cr by plants was achieved from the hydroponic solutions without any nitrogen than those containing nitrogen. Although faster removal of Cr (VI) than Cr (III) was observed, translocation of Cr (III) within plant materials was more efficient than Cr (VI). Substantial difference existed in the distribution of Cr in different parts of plant tissues due to the nitrogen in nutrient solutions (p<0.05): lower stems were the major sink for both Cr species in willows grown in the N-free nutrient solutions and more Cr was accumulated in the roots of plants in N-containing ones. No significant difference was found in the removal rate of Cr (VI) between willows grown in the N-free and N-containing solutions (p>0.05). Removal rates of Cr (III) decreased linearly with the strength of nutrient solutions with or without N addition (p<0.01). Translocation efficiencies of both Cr species increased proportionally with the strength of N-containing nutrient solutions and decreased with the strength of N-free nutrient solutions. Results suggest that uptake and translocation mechanisms of Cr (VI) and Cr (III) are apparently different in hankow willows. The presence of easily available nitrogen and other nutrient elements in the nutrient solutions had a more pronounced influence on the uptake of Cr (III) than Cr (VI). Nitrogen availability and quantities in the ambient environment will affect the translocation of both Cr species and their distribution in willows in phytoremediation. © 2007 Elsevier Inc. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/179049
ISSN
2015 Impact Factor: 3.13
2015 SCImago Journal Rankings: 1.229
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYu, XZen_US
dc.contributor.authorGu, JDen_US
dc.date.accessioned2012-12-19T09:51:38Z-
dc.date.available2012-12-19T09:51:38Z-
dc.date.issued2008en_US
dc.identifier.citationEcotoxicology And Environmental Safety, 2008, v. 70 n. 2, p. 216-222en_US
dc.identifier.issn0147-6513en_US
dc.identifier.urihttp://hdl.handle.net/10722/179049-
dc.description.abstractThe effect of available nitrogen in nutrient solution on removal of two chemical forms of chromium (Cr) by plants was investigated. Pre-rooted hankow willows (Salix matsudana Koidz) were grown in a hydroponic solution system with or without nitrogen, and amended with hexavalent chromium [Cr (VI)] or trivalent chromium [Cr (III)] at 25.0±0.5 °C for 192 h. The results revealed that higher removal of Cr by plants was achieved from the hydroponic solutions without any nitrogen than those containing nitrogen. Although faster removal of Cr (VI) than Cr (III) was observed, translocation of Cr (III) within plant materials was more efficient than Cr (VI). Substantial difference existed in the distribution of Cr in different parts of plant tissues due to the nitrogen in nutrient solutions (p<0.05): lower stems were the major sink for both Cr species in willows grown in the N-free nutrient solutions and more Cr was accumulated in the roots of plants in N-containing ones. No significant difference was found in the removal rate of Cr (VI) between willows grown in the N-free and N-containing solutions (p>0.05). Removal rates of Cr (III) decreased linearly with the strength of nutrient solutions with or without N addition (p<0.01). Translocation efficiencies of both Cr species increased proportionally with the strength of N-containing nutrient solutions and decreased with the strength of N-free nutrient solutions. Results suggest that uptake and translocation mechanisms of Cr (VI) and Cr (III) are apparently different in hankow willows. The presence of easily available nitrogen and other nutrient elements in the nutrient solutions had a more pronounced influence on the uptake of Cr (III) than Cr (VI). Nitrogen availability and quantities in the ambient environment will affect the translocation of both Cr species and their distribution in willows in phytoremediation. © 2007 Elsevier Inc. All rights reserved.en_US
dc.languageengen_US
dc.publisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/ecoenven_US
dc.relation.ispartofEcotoxicology and Environmental Safetyen_US
dc.subject.meshBiodegradation, Environmental - Drug Effectsen_US
dc.subject.meshCarcinogens, Environmental - Metabolismen_US
dc.subject.meshChromium - Metabolismen_US
dc.subject.meshHydroponicsen_US
dc.subject.meshNitrogen - Pharmacologyen_US
dc.subject.meshPlant Transpiration - Drug Effectsen_US
dc.subject.meshSalix - Drug Effects - Metabolismen_US
dc.subject.meshSoil Pollutants - Metabolismen_US
dc.titleEffect of available nitrogen on phytoavailability and bioaccumulation of hexavalent and trivalent chromium in hankow willows (Salix matsudana Koidz)en_US
dc.typeArticleen_US
dc.identifier.emailGu, JD: jdgu@hkucc.hku.hken_US
dc.identifier.authorityGu, JD=rp00701en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.ecoenv.2007.11.010en_US
dc.identifier.pmid18192014-
dc.identifier.scopuseid_2-s2.0-42049103655en_US
dc.identifier.hkuros141821-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-42049103655&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume70en_US
dc.identifier.issue2en_US
dc.identifier.spage216en_US
dc.identifier.epage222en_US
dc.identifier.isiWOS:000256640800003-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridYu, XZ=24449490500en_US
dc.identifier.scopusauthoridGu, JD=7403129601en_US

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