title: Composition, speciation and distribution of iron minerals in Imperata cylindrica.
abstract: A 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.
authors.affiliation: Centro de Biología Molecular, UAM, Cantoblanco, Madrid 28049, Spain. ramils@cbm.uam.es
authors.forename: Ricardo
authors.initials: R
authors.lastname: Amils
authors.forename: Vicenta
authors.initials: V
authors.lastname: de la Fuente
authors.forename: Nuria
authors.initials: N
authors.lastname: Rodríguez
authors.forename: Javier
authors.initials: J
authors.lastname: Zuluaga
authors.forename: Nieves
authors.initials: N
authors.lastname: Menéndez
authors.forename: Jesús
authors.initials: J
authors.lastname: Tornero
mesh_terms: D007501:Iron / Q000032:analysis* / Q000737:chemistry* / Q000378:metabolism; D018515:Plant Leaves / Q000378:metabolism / Q000648:ultrastructure; D018517:Plant Roots / Q000378:metabolism / Q000648:ultrastructure; D018547:Plant Stems / Q000378:metabolism / Q000648:ultrastructure; D006109:Poaceae / Q000737:chemistry* / Q000378:metabolism*; D027343:Rhizome / Q000378:metabolism / Q000648:ultrastructure
chemical_list: D007501:Iron