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Composition, speciation and distribution of iron minerals in Imperata cylindrica

AuthorsAmils, Ricardo ; Fuente, Vicenta de la; Rodríguez, Nuria ; Zuluaga, Javier; Menéndez, Nieves; Tornero, Jesús
KeywordsIron biominerals
Imperata cylindrica
Iron oxides
Iron oxyhydroxides
Mösbauer spectroscopy
Issue DateMay-2007
CitationPlant Physiology and Biochemistry 45(5): 335-340 (2007)
AbstractA comparative study of the roots, rhizomes and leaves of an iron hyperaccumulator plant, Imperata cylindrica, isolated from the banks of an extreme acidic environment, using complementary techniques: Mösbauer spectroscopy (MS), X-ray diffraction (XRD), scanning electron microscopy (SEM) coupled to energy-dispersive X-ray microanalysis (EDAX) and transmission electron microscopy (TEM), has shown that two main biominerals, jarosite and ferrihydrate-ferritin, accumulate in the different tissues. Jarosite accumulates mainly in roots and rhizomes, while ferritin has been detected in all the structures. A model of iron management in I. cylindrica is presented.
Description6 pages, 3 figures.-- Research article.
Publisher version (URL)http://dx.doi.org/10.1016/j.plaphy.2007.03.020
Appears in Collections:(CAB) Artículos
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