X-ray absorption spectroscopy at the Ni-K edge in stackhousia tryonii bailey hyperaccumulator

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dc.contributor.authorLonescu, Men_AU
dc.contributor.authorBhatia, NPen_AU
dc.contributor.authorCohen, DDen_AU
dc.contributor.authorKachenko, AGen_AU
dc.contributor.authorSiegele, Ren_AU
dc.contributor.authorMarcus, MAen_AU
dc.contributor.authorFakra, SCen_AU
dc.contributor.authorForan, GJen_AU
dc.date.accessioned2009-09-30T06:27:00Zen_AU
dc.date.accessioned2010-04-30T05:06:21Zen_AU
dc.date.available2009-09-30T06:27:00Zen_AU
dc.date.available2010-04-30T05:06:21Zen_AU
dc.date.issued2008-11en_AU
dc.date.statistics2008-11en_AU
dc.description.abstractYoung plants of Stackhousia tryonii Bailey were exposed to 34 mM Ni kg(-1) in the form of NiSO4 center dot 6H(2)O solution and grown under controlled glasshouse conditions fora period of 20 days. Fresh leaf, stem and root samples were analysed in vivo by micro x-ray absorption spectroscopy (XAS) at the Ni-K edge. Both x-ray absorption near edge structure and extended x-ray absorption fine structure spectra were analysed, and the resulting spectra were compared with spectra obtained from nine biologically important Ni-containing model compounds. The results revealed that the majority of leaf, stem and root Ni in the hyperaccumulator was chelated by citrate. Our results also suggest that in leaves Ni is complexed by phosphate and histidine, and in stems and roots, phytate and histidine. The XAS results provide an important physiological insight into transport, detoxification and storage of Ni in S. tryonii plants. © 2008, Wiley-Blackwell.en_AU
dc.identifier.citationLonescu, M., Bhatia, N. P., Cohen, D. D., Kachenko, A., Siegele, R., Marcus, M. A., Fakra, S., & Foran, G. J. (2008). X-ray absorption spectroscopy at the Ni-K edge in stackhousia tryonii bailey hyperaccumulator. X-Ray Spectrometry, 37(6), 629-634. doi:10.1002/xrs.1111en_AU
dc.identifier.govdoc1407en_AU
dc.identifier.issn0049-8246en_AU
dc.identifier.issue6en_AU
dc.identifier.journaltitleX-Ray Spectrometryen_AU
dc.identifier.pagination629-634en_AU
dc.identifier.urihttp://dx.doi.org/10.1002/xrs.1111en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/1879en_AU
dc.identifier.volume37en_AU
dc.language.isoenen_AU
dc.publisherWiley-Blackwellen_AU
dc.subjectX-ray spectroscopyen_AU
dc.subjectPlantsen_AU
dc.subjectAbsorptionen_AU
dc.subjectFine structureen_AU
dc.subjectNickelen_AU
dc.subjectHistidineen_AU
dc.titleX-ray absorption spectroscopy at the Ni-K edge in stackhousia tryonii bailey hyperaccumulatoren_AU
dc.typeJournal Articleen_AU
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