Título
Effect of salicylic acid on the attenuation of aluminum toxicity in Coffea arabica L. suspension cells: A possible protein phosphorylation signaling pathway
Autor
SOLEDAD MARIA TERESA HERNANDEZ SOTOMAYOR
Nivel de Acceso
Acceso Abierto
Materias
Resumen o descripción
The protective effect of salicylic acid (SA) on aluminum (Al) toxicity was studied in suspension cells of Coffea
arabica L. The results showed that SA does not produce any effect on cell growth and that the growth inhibition
produced by aluminum is restored during simultaneous treatment of the cells with Al and SA. In addition, the
cells exposed to both compounds, Al and SA, showed evident morphological signals of recovery from the toxic
state produced in the presence of Al. The cells treated with SA showed a lower accumulation of Al, which was
linked to restoration from Al toxicity because the concentration of Al3+ outside the cells, measured as the
Al3+–morin complex, was not modified by the presence of SA. Additionally, the inhibition of phospholipase C
by Al treatment was restored during the exposure of the cells to SA and Al. The involvement of protein phosphorylation
in the protective effect of SA on Al-toxicity was suggested because staurosporine, a protein kinase
inhibitor, reverted the stimulatory effect of the combination of Al and SA on protein kinase activity. These results
suggest that SA attenuates aluminum toxicity by affecting a signaling pathway linked to protein phosphorylation
Fecha de publicación
30 de diciembre de 2013
Tipo de publicación
Artículo
Recurso de información
Formato
application/pdf
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Repositorio Institucional CICY
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