English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/37467
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 16 veces en Web of Knowledge®  |  Pub MebCentral Ver citas en PubMed Central  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar bibText (RIS)Exportar csv (RIS)
Título

Carboxylate metabolism in sugar beet plants grown with excess Zn

AutorSagardoy Calderón, Ruth ; Morales Iribas, Fermín ; Rellán-Álvarez, Rubén ; Abadía Bayona, Anunciación ; Abadía Bayona, Javier ; López-Millán, Ana Flor
Palabras claveHeavy metal toxicity
Carboxylate metabolism
Sugar beet
Zn toxicity
Fecha de publicaciónmay-2011
EditorElsevier
CitaciónSagardoy R, Morales F, Rellán-Álvarez R, Abadía A, Abadía J, López-Millán AF. Carboxylate metabolism in sugar beet plants grown with excess Zn. Journal of plant physiology 168 (7): 730-733 (2011)
ResumenThe effects of Zn excess on carboxylate metabolism were investigated in sugar beet (Beta vulgaris L.) plants grown hydroponically in a growth chamber. Root extracts of plants grown with 50 or 100 M Zn in the nutrient solution showed increases in several enzymatic activities related to organic acid metabolism, including citrate synthase and phosphoenolpyruvate carboxylase, when compared to activities in control root extracts. Root citric and malic acid concentrations increased in plants grown with 100 M Zn, but not in plants grown with 50 M Zn. In the xylem sap, plants grown with 50 and 100 M Zn showed increases in the concentrations of citrate and malate compared to the controls. Leaves of plants grown with 50 or 100 MZn showed increases in the concentrations of citric and malic acid and in the activities of citrate synthase and fumarase. Leaf isocitrate dehydrogenase increased only in plants grown with 50 M Zn when compared to the controls. In plants grown with 300 M Zn, the only enzyme showing activity increases in root extracts was citrate synthase, whereas the activities of other enzymes decreased compared to the controls, and root citrate concentrations increased. In the 300 MZn-grown plants, the xylem concentrations of citric and malic acids were higher than those of controls, whereas in leaf extracts the activity of fumarase increased markedly, and the leaf citric acid concentration was higher than in the controls. Based on our data, a metabolic model of the carboxylate metabolism in sugar beet plants grown under Zn excess is proposed.
Descripción4 Pag., 2 Tabl., 1 Fig. The definitive version is available at: http://www.sciencedirect.com/science/journal/01761617
Versión del editorhttp://dx.doi.org/10.1016/j.jplph.2010.10.012
URIhttp://hdl.handle.net/10261/37467
DOI10.1016/j.jplph.2010.10.012
ISSN0176-1617
Aparece en las colecciones: (EEAD) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.