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Título

Flavin excretion from roots of iron-deficient sugar beet (Beta vulgaris L.)

AutorSusín López, Santos A. ; Abián, Joaquín ; Peleato Sánchez, María Luisa; Sánchez Baeza, Francisco J.; Abadía Bayona, Anunciación ; Gelpi, Emilio; Abadía Bayona, Javier
Palabras claveBeta
Flavin
Flavin sulfate
Iron deficiency
Fecha de publicaciónmay-1994
EditorSpringer
CitaciónPlanta 193 (4): 514-519 (1994)
ResumenThe characteristics of flavin excretion from iron-deficient sugar-beet roots have been studied. Roots from iron-deficient sugar beet excreted flavins when plants were allowed to decrease the pH of the nutrient solution, but not when plants were grown in nutrient solutions buffered at high pH. As shown by reversed-phase high-performance liquid chromatography, the two major flavins whose excretion was induced by iron deficiency were different from riboflavin, FMN and FAD. These flavins have been identified as riboflavin 3′-sulfate and riboflavin 5′-sulfate by electrospray-mass spectrometry, inductively coupled plasma emission spectroscopy, infrared spectrometry and1H-nuclear magnetic resonance. We have characterized the time courses of accumulation of the different flavins in the nutrient solution and considered several possible roles for flavin excretion in iron acquisition.
Descripción6 Pags.- 6 Figs.
Versión del editorhttp://dx.doi.org/10.1007/BF02411556
URIhttp://hdl.handle.net/10261/122030
DOI10.1007/BF02411556
ISSN0032-0935
E-ISSN1432-2048
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