English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/72511
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 8 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 EndNote (RIS)Exportar EndNote (RIS)
Título : Zinc deficiency in field-grown pecan trees: changes in leaf nutrient concentrations and structure
Autor : Ojeda-Barrios, Dámaris L.; Abadía Bayona, Javier ; Lombardini, Leonardo; Abadía Bayona, Anunciación ; Vázquez-Reina, Saúl
Palabras clave : Carya illinoinensis
mineral nutrition
leaf anatomy
Zn fluorophore
Fecha de publicación : jun-2012
Editor: John Wiley & Sons
Citación : Ojeda-Barrios D, Abadía J, Lombardini L, Abadía A, Vázquez S. Zinc deficiency in field-grown pecan trees: changes in leaf nutrient concentrations and structure. Journal of the Science of Food and Agriculture 92 (8): 1672–1678 (2012)
Resumen: BACKGROUND: Zinc (Zn) deficiency is a typical nutritional disorder in pecan trees [Carya illinoinensis (Wangenh.) C. Koch] grown under field conditions in calcareous soils in North America, including northern Mexico and south-western United States. The aim of this study was to assess the morphological and nutritional changes in pecan leaves affected by Zn deficiency as well as the Zn distribution within leaves. RESULTS: Zinc deficiency led to decreases in leaf chlorophyll concentrations, leaf area and trunk cross-sectional area. Zinc deficiency increased significantly the leaf concentrations of K and Ca, and decreased the leaf concentrations of Zn, Fe, Mn and Cu. All nutrient values found in Zn-deficient leaves were within the sufficiency ranges, with the only exception of Zn, which was approximately 44, 11 and 9 µg g−1 dry weight in Zn-sufficient, moderately and markedly Zn-deficient leaves, respectively. Zinc deficiency led to decreases in leaf thickness, mainly due to a reduction in the thickness of the palisade parenchyma, as well as to increases in stomatal density and size. The localisation of Zn was determined using the fluorophore Zinpyr-1 and ratio-imaging technique. Zinc was mainly localised in the palisade mesophyll area in Zn-sufficient leaves, whereas no signal could be obtained in Zn-deficient leaves. CONCLUSION: The effects of Zn deficiency on the leaf characteristics of pecan trees include not only decreases in leaf chlorophyll and Zn concentrations, but also a reduction in the thickness of the palisade parenchyma, an increase in stomatal density and pore size and the practical disappearance of Zn leaf pools. These characteristics must be taken into account to design strategies to correct Zn deficiency in pecan tree in the field.
Descripción : 7 Pags., 3 Figs., 3 Tabls.
Versión del editor: http://dx.doi.org/10.1002/jsfa.5530
URI : http://hdl.handle.net/10261/72511
DOI: 10.1002/jsfa.5530
ISSN: 0022-5142
E-ISSN: 1097-0010
Aparece en las colecciones: (EEAD) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
mod vers.aut pend.pdf20,83 kBAdobe PDFVista previa
Visualizar/Abrir
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.