Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/62294
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Overexpression of the tomato K+/H+ antiporter LeNHX2 confers salt tolerance by improving potassium compartmentalization |
Autor: | Rodríguez-Rosales, M. Pilar CSIC ORCID; Jiang, Xingyu CSIC; Gálvez Segovia, F. J.; Aranda, Mª de las N. CSIC ORCID; Cubero, Beatriz CSIC ; Venema, Kees CSIC ORCID | Fecha de publicación: | 2008 | Editor: | Blackwell Publishing | Citación: | New Phytologist 179(2): 366-377 (2008) | Resumen: | • Here, the function of the tomato (Solanum lycopersicon) K +/H+ antiporter LeNHX2 was studied using 35S-driven gene overexpression of a histagged LeNHX2 protein in Arabidopsis thaliana and LeNHX2 gene silencing in tomato. • Transgenic A. thaliana plants expressed the histagged LeNHX2 both in shoots and in roots, as assayed by western blotting. Transitory expression of a green fluorescent protein (GFP) tagged protein showed that the antiporter is present in small vesicles. Internal membrane vesicles from transgenic plants displayed enhanced K+/H+ exchange activity, confirming the K+/H+ antiporter function of this enzyme. Transgenic A. thaliana plants overexpressing the histagged tomato antiporter LeNHX2 exhibited inhibited growth in the absence of K+ in the growth medium, but were more tolerant to high concentrations of Na + than untransformed controls. When grown in the presence of NaCl, transgenic plants contained lower concentrations of intracellular Na +, but more K+, as compared with untransformed controls. • Silencing of LeNHX2 in S. lycopersicon plants produced significant inhibition of plant growth and fruit and seed production as well as increased sensitivity to NaCl. • The data indicate that regulation of K+ homeostasis by LeNHX2 is essential for normal plant growth and development, and plays an important role in the response to salt stress by improving K + accumulation. | URI: | http://hdl.handle.net/10261/62294 | DOI: | 10.1111/j.1469-8137.2008.02461.x | Identificadores: | doi: 10.1111/j.1469-8137.2008.02461.x issn: 0028-646X e-issn: 1469-8137 |
Aparece en las colecciones: | (IRNAS) Artículos (EEZ) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
accesoRestringido.pdf | 15,38 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
150
checked on 12-abr-2024
WEB OF SCIENCETM
Citations
135
checked on 24-feb-2024
Page view(s)
340
checked on 18-abr-2024
Download(s)
129
checked on 18-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.